02_voltage drop calculator

Resistance value of 1 wire per 2002 NEC

Voltage Drop Calculations

Data Entry Window Printable View

Results Window

1 120 No 9 3.6 7 3.50 volts (ok) Select voltage

Maximum voltage drop allowed Actual voltage drop

2 3%

10 116.40 18 116.50 volts (ok) Select the max desired voltage drop (0%-5%) Minimum voltage allowed at load Actual voltage with load

3 Single Phase

11 2 19 0.10 volts (ok) Select phase type Multiplier Voltage difference

4 Stranded Copper Uncoated 12 0.778 20 0.0007780 ohms Select the type of wire Resistance/1000' of wire Total resistance per foot

5 AWG 8 * 13 AWG 8 21 AWG 8

Select the size of wire if known Wire Size Minimum wire size for voltage drop

6 45 * 14 45.00 22 46 feet

Enter the length of wire (0-5000') if known Distance Maximum distance with this load

7 50 *

15 50 23 40 amps@ 60°F

Enter Amps (0-6000) if known Maximum Amps

8 1 16 1 24 -10.00 amps (Failed)

Minimum number of parallel wires Ampacity above or below load

Enter data into these cells Calculated information Good data Bad data

Formulas used:

9. Maximum voltage drop allowed = Circuit Voltage(Cell 1) X Maximum voltage drop 17. Actual voltage drop = Resistance(Cell 20) x Amps(Cell 15) % allowed(Cell2). x Distance(Cell 14) x Multiplier(Cell 11)

10. Minimum Voltage drop allowed at load = Voltage(Cell 1) - Max vd allowed (Cell 9) 18. Acutal Voltage with load = Voltage(Cell1) - Acutal Voltage drop(Cell17)###

11. Multiplier = 1 (if cell 3 is single phase) 19. Voltage Difference = Actual Voltage(Cell 18) - Min. voltage(Cell 10)Multiplier = square root of 3 or 1.732050808 (if cell 3 is three phase) If ok then this cell turns green, if not then it turns red

###12. Resistance/1000' of wire = resistance of the type wire in cell 14 and 20. Total Resistance per foot = Res. in table 8 of Cell 4 and Cell 13

sized per cell 13 from Table 8 1000 x number of parallel wires (Cell 16)###

13. Size wire =Cell 5 (if known and entered in cell 5) 21. Minimum wire size = the wire that has low enough resistance to carry###Size wire =Cell 21 (if unknown and cell 5 is left blank) the load without more than the max voltage drop.

14. Distance=Cell 6 (if known and entered in cell 5) ###Distance =Cell 22 (if unknown and cell 6 is left blank) Amps(Cell 15) x Length(Cell 14) x Multiplier(Cell 11)

15. Maximum Amps= Cell 7 (if known and entered in cell 7) 22.Maximum Amps= see below (if cell 7 is left blank) Amps(Cell 15) x Resistance(Cell 20) x Multiplier(Cell 11)

Max voltage drop(Cell 9) x Number of parallel wires(Cell 8)Resistance/foot(Cell 20) x Distance(Cell 14) x Multiplier(Cell 11) 23. Max Ampacity of the selected wire in Cell13 =

16. Number of sets of parallel wires=Cell 8 (if known and entered in cell 8) The ampacity of the conductor listed in Cell 4 and Cell 13 per Number of sets of parallel wires=1 (if unknown and cell 8 is left blank) Article 110.14(C) and Table 310.16. Note: This is the maximum

ampacity allowed under ideal conditions.

The calculations above were based on the following equations: 24. Amps above or below load = Ampacity of Cell 23 - Ampacity of Cell 15

Vd= I x R x L x M Where: Vd= Maximum Voltage Drop in volts Disclaimer: Voltage drop calculations and Table 310.16 are not theP only considerations when sizing conductors. Many other factors

I= Current in Amps must be considered, such as: the type of load, the ambient temp,I= Vd x P the type of insulation, the association with other conductors,

R x L x M R= Resistance in ohms per foot the temperature rating of the equipment, the type of environment,the size of the breaker, the type of circuit (branch, feeder, service,

R= Vd x P L= Length of wire one way in feet grounding, or control), continuous load, etc. Use this spreadsheetI x L x M to check voltage drop. See the NEC to size wires.

M= Multiplier L= Vd x P 2 for single phase or ALBANY TECHNICAL COLLEGE

I x R x M or 1.732050808 for three phase Please report any errors to:Bill Bamford

P= I x R x L x M P= Number of parallel runs Albany, GeorgiaVd

The following voltage drop calculations were all based on the resistance values in Table 8 of Chapter 9 of the 2002 NEC. This spreadsheet only considers voltage drop. Many other factors affect wire size. Refer to the entire NEC when sizing wire.

Note: If only one of cells 5,6 and 7 is left blank, then a calculated value will appear to the left of the cell.

Max ampacity of the wire in Cell 13 per Table 310.16 of the 2002 NEC

If the wire is smaller than AWG 1/0 then parallel wires are not allowed except per 310.4 exceptions.Select the number of parallel wires

(1 is non-parallel) or 2-25 pairs

Directions: Fill in blank cells 1-8. If you leave only one entry blank in cells 5, 6 or 7, then a recommended maximum will appear to the left of the cell. The Ampacity of the wire in cell 13 is given in cell 23. If this cell turns red, the wire size in cell 13 is not large enough to carry even the minimum load. This ampacity is calculated in Table 310.16 as per 110.14(c). This number does not consider any other factors such as insulation type, continuous load, correction factors or adjustment factors.

Resistance = Max voltage drop((Cell 9) x parallel wires(Cell 16)

Distance = Max voltage drop(Cell 9) x parallel wires (Cell 16)

Email: [email protected] of last revision or correction: Aug. 28, 2004

Copper AWG 16 (Max ampacity - 20 amps 60°)

Strands 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1

Phase 1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3

Voltage 120 120 120 120 208 208 208 208 240 240 240 240 277 277 277 277 480 480 480 480

Amps Maximum lenghts of wire at 3% voltage drop in feet

1 360.7 368.1 416.5 425.0 625.3 638.0 722.0 736.7 721.4 736.2 833.1 850.1 832.7 849.7 961.5 981.1 1442.9 1472.4 1666.1 1700.2

2 180.4 184.0 208.3 212.5 312.6 319.0 361.0 368.4 360.7 368.1 416.5 425.0 416.3 424.8 480.7 490.6 721.4 736.2 833.1 850.1

3 120.2 122.7 138.8 141.7 208.4 212.7 240.7 245.6 240.5 245.4 277.7 283.4 277.6 283.2 320.5 327.0 481.0 490.8 555.4 566.7

4 90.2 92.0 104.1 106.3 156.3 159.5 180.5 184.2 180.4 184.0 208.3 212.5 208.2 212.4 240.4 245.3 360.7 368.1 416.5 425.0

5 72.1 73.6 83.3 85.0 125.1 127.6 144.4 147.3 144.3 147.2 166.6 170.0 166.5 169.9 192.3 196.2 288.6 294.5 333.2 340.0

6 60.1 61.3 69.4 70.8 104.2 106.3 120.3 122.8 120.2 122.7 138.8 141.7 138.8 141.6 160.2 163.5 240.5 245.4 277.7 283.4

7 51.5 52.6 59.5 60.7 89.3 91.1 103.1 105.2 103.1 105.2 119.0 121.4 119.0 121.4 137.4 140.2 206.1 210.3 238.0 242.9

8 45.1 46.0 52.1 53.1 78.2 79.8 90.2 92.1 90.2 92.0 104.1 106.3 104.1 106.2 120.2 122.6 180.4 184.0 208.3 212.5

9 40.1 40.9 46.3 47.2 69.5 70.9 80.2 81.9 80.2 81.8 92.6 94.5 92.5 94.4 106.8 109.0 160.3 163.6 185.1 188.9

10 36.1 36.8 41.7 42.5 62.5 63.8 72.2 73.7 72.1 73.6 83.3 85.0 83.3 85.0 96.1 98.1 144.3 147.2 166.6 170.0

15 24.0 24.5 27.8 28.3 41.7 42.5 48.1 49.1 48.1 49.1 55.5 56.7 55.5 56.6 64.1 65.4 96.2 98.2 111.1 113.3

16 22.5 23.0 26.0 26.6 39.1 39.9 45.1 46.0 45.1 46.0 52.1 53.1 52.0 53.1 60.1 61.3 90.2 92.0 104.1 106.3

17 21.2 21.7 24.5 25.0 36.8 37.5 42.5 43.3 42.4 43.3 49.0 50.0 49.0 50.0 56.6 57.7 84.9 86.6 98.0 100.0

18 20.0 20.4 23.1 23.6 34.7 35.4 40.1 40.9 40.1 40.9 46.3 47.2 46.3 47.2 53.4 54.5 80.2 81.8 92.6 94.5

19 19.0 19.4 21.9 22.4 32.9 33.6 38.0 38.8 38.0 38.7 43.8 44.7 43.8 44.7 50.6 51.6 75.9 77.5 87.7 89.5

20 18.0 18.4 20.8 21.3 31.3 31.9 36.1 36.8 36.1 36.8 41.7 42.5 41.6 42.5 48.1 49.1 72.1 73.6 83.3 85.0

25 14.4 14.7 16.7 17.0 25.0 25.5 28.9 29.5 28.9 29.4 33.3 34.0 33.3 34.0 38.5 39.2 57.7 58.9 66.6 68.0

30 12.0 12.3 13.9 14.2 20.8 21.3 24.1 24.6 24.0 24.5 27.8 28.3 27.8 28.3 32.0 32.7 48.1 49.1 55.5 56.7

35 10.3 10.5 11.9 12.1 17.9 18.2 20.6 21.0 20.6 21.0 23.8 24.3 23.8 24.3 27.5 28.0 41.2 42.1 47.6 48.6

40 9.0 9.2 10.4 10.6 15.6 16.0 18.0 18.4 18.0 18.4 20.8 21.3 20.8 21.2 24.0 24.5 36.1 36.8 41.7 42.5

45 8.0 8.2 9.3 9.4 13.9 14.2 16.0 16.4 16.0 16.4 18.5 18.9 18.5 18.9 21.4 21.8 32.1 32.7 37.0 37.8

50 7.2 7.4 8.3 8.5 12.5 12.8 14.4 14.7 14.4 14.7 16.7 17.0 16.7 17.0 19.2 19.6 28.9 29.4 33.3 34.0

60 6.0 6.1 6.9 7.1 10.4 10.6 12.0 12.3 12.0 12.3 13.9 14.2 13.9 14.2 16.0 16.4 24.0 24.5 27.8 28.3

70 5.2 5.3 6.0 6.1 8.9 9.1 10.3 10.5 10.3 10.5 11.9 12.1 11.9 12.1 13.7 14.0 20.6 21.0 23.8 24.3

80 4.5 4.6 5.2 5.3 7.8 8.0 9.0 9.2 9.0 9.2 10.4 10.6 10.4 10.6 12.0 12.3 18.0 18.4 20.8 21.3

90 4.0 4.1 4.6 4.7 6.9 7.1 8.0 8.2 8.0 8.2 9.3 9.4 9.3 9.4 10.7 10.9 16.0 16.4 18.5 18.9

100 3.6 3.7 4.2 4.3 6.3 6.4 7.2 7.4 7.2 7.4 8.3 8.5 8.3 8.5 9.6 9.8 14.4 14.7 16.7 17.0


Strands 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1

Phase 1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3

Voltage 120 120 120 120 208 208 208 208 240 240 240 240 277 277 277 277 480 480 480 480

Amps Maximum lenghts of wire at 3% voltage drop in feet

1 573.2 586.3 661.9 677.0 993.6 1016.3 1147.3 1173.5 1146.5 1172.6 1323.9 1354.0 1323.2 1353.4 1528.0 1562.8 2293.0 2345.3 2647.7 2708.1

2 286.6 293.2 331.0 338.5 496.8 508.1 573.7 586.8 573.2 586.3 661.9 677.0 661.6 676.7 764.0 781.4 1146.5 1172.6 1323.9 1354.0

3 191.1 195.4 220.6 225.7 331.2 338.8 382.4 391.2 382.2 390.9 441.3 451.3 441.1 451.1 509.3 520.9 764.3 781.8 882.6 902.7

4 143.3 146.6 165.5 169.3 248.4 254.1 286.8 293.4 286.6 293.2 331.0 338.5 330.8 338.4 382.0 390.7 573.2 586.3 661.9 677.0

5 114.6 117.3 132.4 135.4 198.7 203.3 229.5 234.7 229.3 234.5 264.8 270.8 264.6 270.7 305.6 312.6 458.6 469.1 529.5 541.6

6 95.5 97.7 110.3 112.8 165.6 169.4 191.2 195.6 191.1 195.4 220.6 225.7 220.5 225.6 254.7 260.5 382.2 390.9 441.3 451.3

7 81.9 83.8 94.6 96.7 141.9 145.2 163.9 167.6 163.8 167.5 189.1 193.4 189.0 193.3 218.3 223.3 327.6 335.0 378.2 386.9

8 71.7 73.3 82.7 84.6 124.2 127.0 143.4 146.7 143.3 146.6 165.5 169.3 165.4 169.2 191.0 195.3 286.6 293.2 331.0 338.5

9 63.7 65.1 73.5 75.2 110.4 112.9 127.5 130.4 127.4 130.3 147.1 150.4 147.0 150.4 169.8 173.6 254.8 260.6 294.2 300.9

10 57.3 58.6 66.2 67.7 99.4 101.6 114.7 117.4 114.6 117.3 132.4 135.4 132.3 135.3 152.8 156.3 229.3 234.5 264.8 270.8

15 38.2 39.1 44.1 45.1 66.2 67.8 76.5 78.2 76.4 78.2 88.3 90.3 88.2 90.2 101.9 104.2 152.9 156.4 176.5 180.5

16 35.8 36.6 41.4 42.3 62.1 63.5 71.7 73.3 71.7 73.3 82.7 84.6 82.7 84.6 95.5 97.7 143.3 146.6 165.5 169.3

17 33.7 34.5 38.9 39.8 58.4 59.8 67.5 69.0 67.4 69.0 77.9 79.6 77.8 79.6 89.9 91.9 134.9 138.0 155.7 159.3

18 31.8 32.6 36.8 37.6 55.2 56.5 63.7 65.2 63.7 65.1 73.5 75.2 73.5 75.2 84.9 86.8 127.4 130.3 147.1 150.4

19 30.2 30.9 34.8 35.6 52.3 53.5 60.4 61.8 60.3 61.7 69.7 71.3 69.6 71.2 80.4 82.3 120.7 123.4 139.4 142.5

20 28.7 29.3 33.1 33.9 49.7 50.8 57.4 58.7 57.3 58.6 66.2 67.7 66.2 67.7 76.4 78.1 114.6 117.3 132.4 135.4

25 22.9 23.5 26.5 27.1 39.7 40.7 45.9 46.9 45.9 46.9 53.0 54.2 52.9 54.1 61.1 62.5 91.7 93.8 105.9 108.3

30 19.1 19.5 22.1 22.6 33.1 33.9 38.2 39.1 38.2 39.1 44.1 45.1 44.1 45.1 50.9 52.1 76.4 78.2 88.3 90.3

35 16.4 16.8 18.9 19.3 28.4 29.0 32.8 33.5 32.8 33.5 37.8 38.7 37.8 38.7 43.7 44.7 65.5 67.0 75.6 77.4

40 14.3 14.7 16.5 16.9 24.8 25.4 28.7 29.3 28.7 29.3 33.1 33.9 33.1 33.8 38.2 39.1 57.3 58.6 66.2 67.7

45 12.7 13.0 14.7 15.0 22.1 22.6 25.5 26.1 25.5 26.1 29.4 30.1 29.4 30.1 34.0 34.7 51.0 52.1 58.8 60.2

50 11.5 11.7 13.2 13.5 19.9 20.3 22.9 23.5 22.9 23.5 26.5 27.1 26.5 27.1 30.6 31.3 45.9 46.9 53.0 54.2

60 9.6 9.8 11.0 11.3 16.6 16.9 19.1 19.6 19.1 19.5 22.1 22.6 22.1 22.6 25.5 26.0 38.2 39.1 44.1 45.1

70 8.2 8.4 9.5 9.7 14.2 14.5 16.4 16.8 16.4 16.8 18.9 19.3 18.9 19.3 21.8 22.3 32.8 33.5 37.8 38.7

80 7.2 7.3 8.3 8.5 12.4 12.7 14.3 14.7 14.3 14.7 16.5 16.9 16.5 16.9 19.1 19.5 28.7 29.3 33.1 33.9

90 6.4 6.5 7.4 7.5 11.0 11.3 12.7 13.0 12.7 13.0 14.7 15.0 14.7 15.0 17.0 17.4 25.5 26.1 29.4 30.1

100 5.7 5.9 6.6 6.8 9.9 10.2 11.5 11.7 11.5 11.7 13.2 13.5 13.2 13.5 15.3 15.6 22.9 23.5 26.5 27.1

Size-Ampacity

Size-Ampacity

Strands

Phase

Voltage

Amps

1

2

3

4

5

6

7

8

9

10

15

16

17

18

19

20

25

30

35

40

45

50

60

70

80

90

100

Strands

Phase

Voltage

Amps

1

2

3

4

5

6

7

8

9

10

15

16

17

18

19

20

25

30

35

40

45

50

60

70

80

90

100

Size-Ampacity

Size-Ampacity


7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1

1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3

120 120 120 120 208 208 208 208 240 240 240 240 277 277 277 277 480 480 480 480

Maximum lenghts of wire at 3% voltage drop in feet

909.1 932.6 1049.7 1076.9 1575.8 1616.6 1819.5 1866.7 1818.2 1865.3 2099.5 2153.8 2098.5 2152.8 2423.1 2485.9 3636.4 3730.6 4198.9 4307.7

454.5 466.3 524.9 538.5 787.9 808.3 909.8 933.3 909.1 932.6 1049.7 1076.9 1049.2 1076.4 1211.6 1242.9 1818.2 1865.3 2099.5 2153.8

303.0 310.9 349.9 359.0 525.3 538.9 606.5 622.2 606.1 621.8 699.8 717.9 699.5 717.6 807.7 828.6 1212.1 1243.5 1399.6 1435.9

227.3 233.2 262.4 269.2 393.9 404.1 454.9 466.7 454.5 466.3 524.9 538.5 524.6 538.2 605.8 621.5 909.1 932.6 1049.7 1076.9

181.8 186.5 209.9 215.4 315.2 323.3 363.9 373.3 363.6 373.1 419.9 430.8 419.7 430.6 484.6 497.2 727.3 746.1 839.8 861.5

151.5 155.4 175.0 179.5 262.6 269.4 303.3 311.1 303.0 310.9 349.9 359.0 349.7 358.8 403.9 414.3 606.1 621.8 699.8 717.9

129.9 133.2 150.0 153.8 225.1 230.9 259.9 266.7 259.7 266.5 299.9 307.7 299.8 307.5 346.2 355.1 519.5 532.9 599.8 615.4

113.6 116.6 131.2 134.6 197.0 202.1 227.4 233.3 227.3 233.2 262.4 269.2 262.3 269.1 302.9 310.7 454.5 466.3 524.9 538.5

101.0 103.6 116.6 119.7 175.1 179.6 202.2 207.4 202.0 207.3 233.3 239.3 233.2 239.2 269.2 276.2 404.0 414.5 466.5 478.6

90.9 93.3 105.0 107.7 157.6 161.7 182.0 186.7 181.8 186.5 209.9 215.4 209.8 215.3 242.3 248.6 363.6 373.1 419.9 430.8

60.6 62.2 70.0 71.8 105.1 107.8 121.3 124.4 121.2 124.4 140.0 143.6 139.9 143.5 161.5 165.7 242.4 248.7 279.9 287.2

56.8 58.3 65.6 67.3 98.5 101.0 113.7 116.7 113.6 116.6 131.2 134.6 131.2 134.6 151.4 155.4 227.3 233.2 262.4 269.2

53.5 54.9 61.7 63.3 92.7 95.1 107.0 109.8 107.0 109.7 123.5 126.7 123.4 126.6 142.5 146.2 213.9 219.4 247.0 253.4

50.5 51.8 58.3 59.8 87.5 89.8 101.1 103.7 101.0 103.6 116.6 119.7 116.6 119.6 134.6 138.1 202.0 207.3 233.3 239.3

47.8 49.1 55.2 56.7 82.9 85.1 95.8 98.2 95.7 98.2 110.5 113.4 110.4 113.3 127.5 130.8 191.4 196.3 221.0 226.7

45.5 46.6 52.5 53.8 78.8 80.8 91.0 93.3 90.9 93.3 105.0 107.7 104.9 107.6 121.2 124.3 181.8 186.5 209.9 215.4

36.4 37.3 42.0 43.1 63.0 64.7 72.8 74.7 72.7 74.6 84.0 86.2 83.9 86.1 96.9 99.4 145.5 149.2 168.0 172.3

30.3 31.1 35.0 35.9 52.5 53.9 60.7 62.2 60.6 62.2 70.0 71.8 69.9 71.8 80.8 82.9 121.2 124.4 140.0 143.6

26.0 26.6 30.0 30.8 45.0 46.2 52.0 53.3 51.9 53.3 60.0 61.5 60.0 61.5 69.2 71.0 103.9 106.6 120.0 123.1

22.7 23.3 26.2 26.9 39.4 40.4 45.5 46.7 45.5 46.6 52.5 53.8 52.5 53.8 60.6 62.1 90.9 93.3 105.0 107.7

20.2 20.7 23.3 23.9 35.0 35.9 40.4 41.5 40.4 41.5 46.7 47.9 46.6 47.8 53.8 55.2 80.8 82.9 93.3 95.7

18.2 18.7 21.0 21.5 31.5 32.3 36.4 37.3 36.4 37.3 42.0 43.1 42.0 43.1 48.5 49.7 72.7 74.6 84.0 86.2

15.2 15.5 17.5 17.9 26.3 26.9 30.3 31.1 30.3 31.1 35.0 35.9 35.0 35.9 40.4 41.4 60.6 62.2 70.0 71.8

13.0 13.3 15.0 15.4 22.5 23.1 26.0 26.7 26.0 26.6 30.0 30.8 30.0 30.8 34.6 35.5 51.9 53.3 60.0 61.5

11.4 11.7 13.1 13.5 19.7 20.2 22.7 23.3 22.7 23.3 26.2 26.9 26.2 26.9 30.3 31.1 45.5 46.6 52.5 53.8

10.1 10.4 11.7 12.0 17.5 18.0 20.2 20.7 20.2 20.7 23.3 23.9 23.3 23.9 26.9 27.6 40.4 41.5 46.7 47.9

9.1 9.3 10.5 10.8 15.8 16.2 18.2 18.7 18.2 18.7 21.0 21.5 21.0 21.5 24.2 24.9 36.4 37.3 42.0 43.1

Aluminum AWG 12 (Max ampacity - 20 amps 60°)

7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1

1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3

120 120 120 120 208 208 208 208 240 240 240 240 277 277 277 277 480 480 480 480


553.8 566.0 639.5 653.6 960.0 981.1 1108.5 1132.9 1107.7 1132.1 1279.1 1307.2 1278.5 1306.6 1476.2 1508.7 2215.4 2264.2 2558.1 2614.4

276.9 283.0 319.8 326.8 480.0 490.6 554.3 566.5 553.8 566.0 639.5 653.6 639.2 653.3 738.1 754.4 1107.7 1132.1 1279.1 1307.2

184.6 188.7 213.2 217.9 320.0 327.0 369.5 377.6 369.2 377.4 426.4 435.7 426.2 435.5 492.1 502.9 738.5 754.7 852.7 871.5

138.5 141.5 159.9 163.4 240.0 245.3 277.1 283.2 276.9 283.0 319.8 326.8 319.6 326.7 369.1 377.2 553.8 566.0 639.5 653.6

110.8 113.2 127.9 130.7 192.0 196.2 221.7 226.6 221.5 226.4 255.8 261.4 255.7 261.3 295.2 301.7 443.1 452.8 511.6 522.9

92.3 94.3 106.6 108.9 160.0 163.5 184.8 188.8 184.6 188.7 213.2 217.9 213.1 217.8 246.0 251.5 369.2 377.4 426.4 435.7

79.1 80.9 91.4 93.4 137.1 140.2 158.4 161.8 158.2 161.7 182.7 186.7 182.6 186.7 210.9 215.5 316.5 323.5 365.4 373.5

69.2 70.8 79.9 81.7 120.0 122.6 138.6 141.6 138.5 141.5 159.9 163.4 159.8 163.3 184.5 188.6 276.9 283.0 319.8 326.8

61.5 62.9 71.1 72.6 106.7 109.0 123.2 125.9 123.1 125.8 142.1 145.2 142.1 145.2 164.0 167.6 246.2 251.6 284.2 290.5

55.4 56.6 64.0 65.4 96.0 98.1 110.9 113.3 110.8 113.2 127.9 130.7 127.8 130.7 147.6 150.9 221.5 226.4 255.8 261.4

36.9 37.7 42.6 43.6 64.0 65.4 73.9 75.5 73.8 75.5 85.3 87.1 85.2 87.1 98.4 100.6 147.7 150.9 170.5 174.3

34.6 35.4 40.0 40.9 60.0 61.3 69.3 70.8 69.2 70.8 79.9 81.7 79.9 81.7 92.3 94.3 138.5 141.5 159.9 163.4

32.6 33.3 37.6 38.4 56.5 57.7 65.2 66.6 65.2 66.6 75.2 76.9 75.2 76.9 86.8 88.7 130.3 133.2 150.5 153.8

30.8 31.4 35.5 36.3 53.3 54.5 61.6 62.9 61.5 62.9 71.1 72.6 71.0 72.6 82.0 83.8 123.1 125.8 142.1 145.2

29.1 29.8 33.7 34.4 50.5 51.6 58.3 59.6 58.3 59.6 67.3 68.8 67.3 68.8 77.7 79.4 116.6 119.2 134.6 137.6

27.7 28.3 32.0 32.7 48.0 49.1 55.4 56.6 55.4 56.6 64.0 65.4 63.9 65.3 73.8 75.4 110.8 113.2 127.9 130.7

22.2 22.6 25.6 26.1 38.4 39.2 44.3 45.3 44.3 45.3 51.2 52.3 51.1 52.3 59.0 60.3 88.6 90.6 102.3 104.6

18.5 18.9 21.3 21.8 32.0 32.7 37.0 37.8 36.9 37.7 42.6 43.6 42.6 43.6 49.2 50.3 73.8 75.5 85.3 87.1

15.8 16.2 18.3 18.7 27.4 28.0 31.7 32.4 31.6 32.3 36.5 37.3 36.5 37.3 42.2 43.1 63.3 64.7 73.1 74.7

13.8 14.2 16.0 16.3 24.0 24.5 27.7 28.3 27.7 28.3 32.0 32.7 32.0 32.7 36.9 37.7 55.4 56.6 64.0 65.4

12.3 12.6 14.2 14.5 21.3 21.8 24.6 25.2 24.6 25.2 28.4 29.0 28.4 29.0 32.8 33.5 49.2 50.3 56.8 58.1

11.1 11.3 12.8 13.1 19.2 19.6 22.2 22.7 22.2 22.6 25.6 26.1 25.6 26.1 29.5 30.2 44.3 45.3 51.2 52.3

9.2 9.4 10.7 10.9 16.0 16.4 18.5 18.9 18.5 18.9 21.3 21.8 21.3 21.8 24.6 25.1 36.9 37.7 42.6 43.6

7.9 8.1 9.1 9.3 13.7 14.0 15.8 16.2 15.8 16.2 18.3 18.7 18.3 18.7 21.1 21.6 31.6 32.3 36.5 37.3

6.9 7.1 8.0 8.2 12.0 12.3 13.9 14.2 13.8 14.2 16.0 16.3 16.0 16.3 18.5 18.9 27.7 28.3 32.0 32.7

6.2 6.3 7.1 7.3 10.7 10.9 12.3 12.6 12.3 12.6 14.2 14.5 14.2 14.5 16.4 16.8 24.6 25.2 28.4 29.0

5.5 5.7 6.4 6.5 9.6 9.8 11.1 11.3 11.1 11.3 12.8 13.1 12.8 13.1 14.8 15.1 22.2 22.6 25.6 26.1

Strands

Phase

Voltage

Amps

1

2

3

4

5

6

7

8

9

10

15

16

17

18

19

20

25

30

35

40

45

50

60

70

80

90

100

Strands

Phase

Voltage

Amps

1

2

3

4

5

6

7

8

9

10

15

16

17

18

19

20

25

30

35

40

45

50

60

70

80

90

100

Size-Ampacity

Size-Ampacity


7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1

1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3

120 120 120 120 208 208 208 208 240 240 240 240 277 277 277 277 480 480 480 480


1451.6 1487.6 1676.2 1717.7 2516.1 2578.5 2905.4 2977.4 2903.2 2975.2 3352.4 3435.5 3350.8 3433.9 3869.2 3965.1 5806.5 5950.4 6704.7 6870.9

725.8 743.8 838.1 858.9 1258.1 1289.3 1452.7 1488.7 1451.6 1487.6 1676.2 1717.7 1675.4 1716.9 1934.6 1982.6 2903.2 2975.2 3352.4 3435.5

483.9 495.9 558.7 572.6 838.7 859.5 968.5 992.5 967.7 991.7 1117.5 1145.2 1116.9 1144.6 1289.7 1321.7 1935.5 1983.5 2234.9 2290.3

362.9 371.9 419.0 429.4 629.0 644.6 726.3 744.4 725.8 743.8 838.1 858.9 837.7 858.5 967.3 991.3 1451.6 1487.6 1676.2 1717.7

290.3 297.5 335.2 343.5 503.2 515.7 581.1 595.5 580.6 595.0 670.5 687.1 670.2 686.8 773.8 793.0 1161.3 1190.1 1340.9 1374.2

241.9 247.9 279.4 286.3 419.4 429.8 484.2 496.2 483.9 495.9 558.7 572.6 558.5 572.3 644.9 660.9 967.7 991.7 1117.5 1145.2

207.4 212.5 239.5 245.4 359.4 368.4 415.1 425.3 414.7 425.0 478.9 490.8 478.7 490.6 552.7 566.4 829.5 850.1 957.8 981.6

181.5 186.0 209.5 214.7 314.5 322.3 363.2 372.2 362.9 371.9 419.0 429.4 418.9 429.2 483.6 495.6 725.8 743.8 838.1 858.9

161.3 165.3 186.2 190.9 279.6 286.5 322.8 330.8 322.6 330.6 372.5 381.7 372.3 381.5 429.9 440.6 645.2 661.2 745.0 763.4

145.2 148.8 167.6 171.8 251.6 257.9 290.5 297.7 290.3 297.5 335.2 343.5 335.1 343.4 386.9 396.5 580.6 595.0 670.5 687.1

96.8 99.2 111.7 114.5 167.7 171.9 193.7 198.5 193.5 198.3 223.5 229.0 223.4 228.9 257.9 264.3 387.1 396.7 447.0 458.1

90.7 93.0 104.8 107.4 157.3 161.2 181.6 186.1 181.5 186.0 209.5 214.7 209.4 214.6 241.8 247.8 362.9 371.9 419.0 429.4

85.4 87.5 98.6 101.0 148.0 151.7 170.9 175.1 170.8 175.0 197.2 202.1 197.1 202.0 227.6 233.2 341.6 350.0 394.4 404.2

80.6 82.6 93.1 95.4 139.8 143.3 161.4 165.4 161.3 165.3 186.2 190.9 186.2 190.8 215.0 220.3 322.6 330.6 372.5 381.7

76.4 78.3 88.2 90.4 132.4 135.7 152.9 156.7 152.8 156.6 176.4 180.8 176.4 180.7 203.6 208.7 305.6 313.2 352.9 361.6

72.6 74.4 83.8 85.9 125.8 128.9 145.3 148.9 145.2 148.8 167.6 171.8 167.5 171.7 193.5 198.3 290.3 297.5 335.2 343.5

58.1 59.5 67.0 68.7 100.6 103.1 116.2 119.1 116.1 119.0 134.1 137.4 134.0 137.4 154.8 158.6 232.3 238.0 268.2 274.8

48.4 49.6 55.9 57.3 83.9 86.0 96.8 99.2 96.8 99.2 111.7 114.5 111.7 114.5 129.0 132.2 193.5 198.3 223.5 229.0

41.5 42.5 47.9 49.1 71.9 73.7 83.0 85.1 82.9 85.0 95.8 98.2 95.7 98.1 110.5 113.3 165.9 170.0 191.6 196.3

36.3 37.2 41.9 42.9 62.9 64.5 72.6 74.4 72.6 74.4 83.8 85.9 83.8 85.8 96.7 99.1 145.2 148.8 167.6 171.8

32.3 33.1 37.2 38.2 55.9 57.3 64.6 66.2 64.5 66.1 74.5 76.3 74.5 76.3 86.0 88.1 129.0 132.2 149.0 152.7

29.0 29.8 33.5 34.4 50.3 51.6 58.1 59.5 58.1 59.5 67.0 68.7 67.0 68.7 77.4 79.3 116.1 119.0 134.1 137.4

24.2 24.8 27.9 28.6 41.9 43.0 48.4 49.6 48.4 49.6 55.9 57.3 55.8 57.2 64.5 66.1 96.8 99.2 111.7 114.5

20.7 21.3 23.9 24.5 35.9 36.8 41.5 42.5 41.5 42.5 47.9 49.1 47.9 49.1 55.3 56.6 82.9 85.0 95.8 98.2

18.1 18.6 21.0 21.5 31.5 32.2 36.3 37.2 36.3 37.2 41.9 42.9 41.9 42.9 48.4 49.6 72.6 74.4 83.8 85.9

16.1 16.5 18.6 19.1 28.0 28.7 32.3 33.1 32.3 33.1 37.2 38.2 37.2 38.2 43.0 44.1 64.5 66.1 74.5 76.3

14.5 14.9 16.8 17.2 25.2 25.8 29.1 29.8 29.0 29.8 33.5 34.4 33.5 34.3 38.7 39.7 58.1 59.5 67.0 68.7


7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1

1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3

120 120 120 120 208 208 208 208 240 240 240 240 277 277 277 277 480 480 480 480


882.4 900.0 1018.9 1039.2 1529.4 1560.0 1766.0 1801.3 1764.7 1800.0 2037.7 2078.5 2036.8 2077.5 2351.9 2398.9 3529.4 3600.0 4075.4 4156.9

441.2 450.0 509.4 519.6 764.7 780.0 883.0 900.7 882.4 900.0 1018.9 1039.2 1018.4 1038.8 1175.9 1199.4 1764.7 1800.0 2037.7 2078.5

294.1 300.0 339.6 346.4 509.8 520.0 588.7 600.4 588.2 600.0 679.2 692.8 678.9 692.5 784.0 799.6 1176.5 1200.0 1358.5 1385.6

220.6 225.0 254.7 259.8 382.4 390.0 441.5 450.3 441.2 450.0 509.4 519.6 509.2 519.4 588.0 599.7 882.4 900.0 1018.9 1039.2

176.5 180.0 203.8 207.8 305.9 312.0 353.2 360.3 352.9 360.0 407.5 415.7 407.4 415.5 470.4 479.8 705.9 720.0 815.1 831.4

147.1 150.0 169.8 173.2 254.9 260.0 294.3 300.2 294.1 300.0 339.6 346.4 339.5 346.3 392.0 399.8 588.2 600.0 679.2 692.8

126.1 128.6 145.6 148.5 218.5 222.9 252.3 257.3 252.1 257.1 291.1 296.9 291.0 296.8 336.0 342.7 504.2 514.3 582.2 593.8

110.3 112.5 127.4 129.9 191.2 195.0 220.8 225.2 220.6 225.0 254.7 259.8 254.6 259.7 294.0 299.9 441.2 450.0 509.4 519.6

98.0 100.0 113.2 115.5 169.9 173.3 196.2 200.1 196.1 200.0 226.4 230.9 226.3 230.8 261.3 266.5 392.2 400.0 452.8 461.9

88.2 90.0 101.9 103.9 152.9 156.0 176.6 180.1 176.5 180.0 203.8 207.8 203.7 207.8 235.2 239.9 352.9 360.0 407.5 415.7

58.8 60.0 67.9 69.3 102.0 104.0 117.7 120.1 117.6 120.0 135.8 138.6 135.8 138.5 156.8 159.9 235.3 240.0 271.7 277.1

55.1 56.2 63.7 65.0 95.6 97.5 110.4 112.6 110.3 112.5 127.4 129.9 127.3 129.8 147.0 149.9 220.6 225.0 254.7 259.8

51.9 52.9 59.9 61.1 90.0 91.8 103.9 106.0 103.8 105.9 119.9 122.3 119.8 122.2 138.3 141.1 207.6 211.8 239.7 244.5

49.0 50.0 56.6 57.7 85.0 86.7 98.1 100.1 98.0 100.0 113.2 115.5 113.2 115.4 130.7 133.3 196.1 200.0 226.4 230.9

46.4 47.4 53.6 54.7 80.5 82.1 92.9 94.8 92.9 94.7 107.2 109.4 107.2 109.3 123.8 126.3 185.8 189.5 214.5 218.8

44.1 45.0 50.9 52.0 76.5 78.0 88.3 90.1 88.2 90.0 101.9 103.9 101.8 103.9 117.6 119.9 176.5 180.0 203.8 207.8

35.3 36.0 40.8 41.6 61.2 62.4 70.6 72.1 70.6 72.0 81.5 83.1 81.5 83.1 94.1 96.0 141.2 144.0 163.0 166.3

29.4 30.0 34.0 34.6 51.0 52.0 58.9 60.0 58.8 60.0 67.9 69.3 67.9 69.3 78.4 80.0 117.6 120.0 135.8 138.6

25.2 25.7 29.1 29.7 43.7 44.6 50.5 51.5 50.4 51.4 58.2 59.4 58.2 59.4 67.2 68.5 100.8 102.9 116.4 118.8

22.1 22.5 25.5 26.0 38.2 39.0 44.2 45.0 44.1 45.0 50.9 52.0 50.9 51.9 58.8 60.0 88.2 90.0 101.9 103.9

19.6 20.0 22.6 23.1 34.0 34.7 39.2 40.0 39.2 40.0 45.3 46.2 45.3 46.2 52.3 53.3 78.4 80.0 90.6 92.4

17.6 18.0 20.4 20.8 30.6 31.2 35.3 36.0 35.3 36.0 40.8 41.6 40.7 41.6 47.0 48.0 70.6 72.0 81.5 83.1

14.7 15.0 17.0 17.3 25.5 26.0 29.4 30.0 29.4 30.0 34.0 34.6 33.9 34.6 39.2 40.0 58.8 60.0 67.9 69.3

12.6 12.9 14.6 14.8 21.8 22.3 25.2 25.7 25.2 25.7 29.1 29.7 29.1 29.7 33.6 34.3 50.4 51.4 58.2 59.4

11.0 11.2 12.7 13.0 19.1 19.5 22.1 22.5 22.1 22.5 25.5 26.0 25.5 26.0 29.4 30.0 44.1 45.0 50.9 52.0

9.8 10.0 11.3 11.5 17.0 17.3 19.6 20.0 19.6 20.0 22.6 23.1 22.6 23.1 26.1 26.7 39.2 40.0 45.3 46.2

8.8 9.0 10.2 10.4 15.3 15.6 17.7 18.0 17.6 18.0 20.4 20.8 20.4 20.8 23.5 24.0 35.3 36.0 40.8 41.6

Strands

Phase

Voltage

Amps

1

2

3

4

5

6

7

8

9

10

15

16

17

18

19

20

25

30

35

40

45

50

60

70

80

90

100

Strands

Phase

Voltage

Amps

1

2

3

4

5

6

7

8

9

10

15

16

17

18

19

20

25

30

35

40

45

50

60

70

80

90

100

Size-Ampacity

Size-Ampacity


7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1

1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3

120 120 120 120 208 208 208 208 240 240 240 240 277 277 277 277 480 480 480 480


2313.6 2356.0 2671.5 2720.5 4010.3 4083.8 4630.7 4715.5 4627.2 4712.0 5343.1 5441.0 5340.6 5438.5 6166.8 6279.8 9254.5 9424.1 10686.2 10882.0

1156.8 1178.0 1335.8 1360.2 2005.1 2041.9 2315.3 2357.8 2313.6 2356.0 2671.5 2720.5 2670.3 2719.2 3083.4 3139.9 4627.2 4712.0 5343.1 5441.0

771.2 785.3 890.5 906.8 1336.8 1361.3 1543.6 1571.8 1542.4 1570.7 1781.0 1813.7 1780.2 1812.8 2055.6 2093.3 3084.8 3141.4 3562.1 3627.3

578.4 589.0 667.9 680.1 1002.6 1020.9 1157.7 1178.9 1156.8 1178.0 1335.8 1360.2 1335.2 1359.6 1541.7 1570.0 2313.6 2356.0 2671.5 2720.5

462.7 471.2 534.3 544.1 802.1 816.8 926.1 943.1 925.4 942.4 1068.6 1088.2 1068.1 1087.7 1233.4 1256.0 1850.9 1884.8 2137.2 2176.4

385.6 392.7 445.3 453.4 668.4 680.6 771.8 785.9 771.2 785.3 890.5 906.8 890.1 906.4 1027.8 1046.6 1542.4 1570.7 1781.0 1813.7

330.5 336.6 381.6 388.6 572.9 583.4 661.5 673.6 661.0 673.1 763.3 777.3 762.9 776.9 881.0 897.1 1322.1 1346.3 1526.6 1554.6

289.2 294.5 333.9 340.1 501.3 510.5 578.8 589.4 578.4 589.0 667.9 680.1 667.6 679.8 770.9 785.0 1156.8 1178.0 1335.8 1360.2

257.1 261.8 296.8 302.3 445.6 453.8 514.5 523.9 514.1 523.6 593.7 604.6 593.4 604.3 685.2 697.8 1028.3 1047.1 1187.4 1209.1

231.4 235.6 267.2 272.0 401.0 408.4 463.1 471.6 462.7 471.2 534.3 544.1 534.1 543.8 616.7 628.0 925.4 942.4 1068.6 1088.2

154.2 157.1 178.1 181.4 267.4 272.3 308.7 314.4 308.5 314.1 356.2 362.7 356.0 362.6 411.1 418.7 617.0 628.3 712.4 725.5

144.6 147.3 167.0 170.0 250.6 255.2 289.4 294.7 289.2 294.5 333.9 340.1 333.8 339.9 385.4 392.5 578.4 589.0 667.9 680.1

136.1 138.6 157.1 160.0 235.9 240.2 272.4 277.4 272.2 277.2 314.3 320.1 314.2 319.9 362.8 369.4 544.4 554.4 628.6 640.1

128.5 130.9 148.4 151.1 222.8 226.9 257.3 262.0 257.1 261.8 296.8 302.3 296.7 302.1 342.6 348.9 514.1 523.6 593.7 604.6

121.8 124.0 140.6 143.2 211.1 214.9 243.7 248.2 243.5 248.0 281.2 286.4 281.1 286.2 324.6 330.5 487.1 496.0 562.4 572.7

115.7 117.8 133.6 136.0 200.5 204.2 231.5 235.8 231.4 235.6 267.2 272.0 267.0 271.9 308.3 314.0 462.7 471.2 534.3 544.1

92.5 94.2 106.9 108.8 160.4 163.4 185.2 188.6 185.1 188.5 213.7 217.6 213.6 217.5 246.7 251.2 370.2 377.0 427.4 435.3

77.1 78.5 89.1 90.7 133.7 136.1 154.4 157.2 154.2 157.1 178.1 181.4 178.0 181.3 205.6 209.3 308.5 314.1 356.2 362.7

66.1 67.3 76.3 77.7 114.6 116.7 132.3 134.7 132.2 134.6 152.7 155.5 152.6 155.4 176.2 179.4 264.4 269.3 305.3 310.9

57.8 58.9 66.8 68.0 100.3 102.1 115.8 117.9 115.7 117.8 133.6 136.0 133.5 136.0 154.2 157.0 231.4 235.6 267.2 272.0

51.4 52.4 59.4 60.5 89.1 90.8 102.9 104.8 102.8 104.7 118.7 120.9 118.7 120.9 137.0 139.6 205.7 209.4 237.5 241.8

46.3 47.1 53.4 54.4 80.2 81.7 92.6 94.3 92.5 94.2 106.9 108.8 106.8 108.8 123.3 125.6 185.1 188.5 213.7 217.6

38.6 39.3 44.5 45.3 66.8 68.1 77.2 78.6 77.1 78.5 89.1 90.7 89.0 90.6 102.8 104.7 154.2 157.1 178.1 181.4

33.1 33.7 38.2 38.9 57.3 58.3 66.2 67.4 66.1 67.3 76.3 77.7 76.3 77.7 88.1 89.7 132.2 134.6 152.7 155.5

28.9 29.5 33.4 34.0 50.1 51.0 57.9 58.9 57.8 58.9 66.8 68.0 66.8 68.0 77.1 78.5 115.7 117.8 133.6 136.0

25.7 26.2 29.7 30.2 44.6 45.4 51.5 52.4 51.4 52.4 59.4 60.5 59.3 60.4 68.5 69.8 102.8 104.7 118.7 120.9

23.1 23.6 26.7 27.2 40.1 40.8 46.3 47.2 46.3 47.1 53.4 54.4 53.4 54.4 61.7 62.8 92.5 94.2 106.9 108.8


7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1 7 1

1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3 1 1 3 3

120 120 120 120 208 208 208 208 240 240 240 240 277 277 277 277 480 480 480 480


1406.2 1428.6 1623.8 1649.6 2437.5 2476.2 2814.6 2859.3 2812.5 2857.1 3247.6 3299.1 3246.1 3297.6 3748.3 3807.8 5625.0 5714.3 6495.2 6598.3

703.1 714.3 811.9 824.8 1218.8 1238.1 1407.3 1429.6 1406.2 1428.6 1623.8 1649.6 1623.0 1648.8 1874.1 1903.9 2812.5 2857.1 3247.6 3299.1

468.7 476.2 541.3 549.9 812.5 825.4 938.2 953.1 937.5 952.4 1082.5 1099.7 1082.0 1099.2 1249.4 1269.3 1875.0 1904.8 2165.1 2199.4

351.6 357.1 405.9 412.4 609.4 619.0 703.6 714.8 703.1 714.3 811.9 824.8 811.5 824.4 937.1 951.9 1406.2 1428.6 1623.8 1649.6

281.2 285.7 324.8 329.9 487.5 495.2 562.9 571.9 562.5 571.4 649.5 659.8 649.2 659.5 749.7 761.6 1125.0 1142.9 1299.0 1319.7

234.4 238.1 270.6 274.9 406.2 412.7 469.1 476.5 468.7 476.2 541.3 549.9 541.0 549.6 624.7 634.6 937.5 952.4 1082.5 1099.7

200.9 204.1 232.0 235.7 348.2 353.7 402.1 408.5 401.8 408.2 463.9 471.3 463.7 471.1 535.5 544.0 803.6 816.3 927.9 942.6

175.8 178.6 203.0 206.2 304.7 309.5 351.8 357.4 351.6 357.1 405.9 412.4 405.8 412.2 468.5 476.0 703.1 714.3 811.9 824.8

156.2 158.7 180.4 183.3 270.8 275.1 312.7 317.7 312.5 317.5 360.8 366.6 360.7 366.4 416.5 423.1 625.0 634.9 721.7 733.1

140.6 142.9 162.4 165.0 243.8 247.6 281.5 285.9 281.2 285.7 324.8 329.9 324.6 329.8 374.8 380.8 562.5 571.4 649.5 659.8

93.7 95.2 108.3 110.0 162.5 165.1 187.6 190.6 187.5 190.5 216.5 219.9 216.4 219.8 249.9 253.9 375.0 381.0 433.0 439.9

87.9 89.3 101.5 103.1 152.3 154.8 175.9 178.7 175.8 178.6 203.0 206.2 202.9 206.1 234.3 238.0 351.6 357.1 405.9 412.4

82.7 84.0 95.5 97.0 143.4 145.7 165.6 168.2 165.4 168.1 191.0 194.1 190.9 194.0 220.5 224.0 330.9 336.1 382.1 388.1

78.1 79.4 90.2 91.6 135.4 137.6 156.4 158.8 156.2 158.7 180.4 183.3 180.3 183.2 208.2 211.5 312.5 317.5 360.8 366.6

74.0 75.2 85.5 86.8 128.3 130.3 148.1 150.5 148.0 150.4 170.9 173.6 170.8 173.6 197.3 200.4 296.1 300.8 341.9 347.3

70.3 71.4 81.2 82.5 121.9 123.8 140.7 143.0 140.6 142.9 162.4 165.0 162.3 164.9 187.4 190.4 281.2 285.7 324.8 329.9

56.2 57.1 65.0 66.0 97.5 99.0 112.6 114.4 112.5 114.3 129.9 132.0 129.8 131.9 149.9 152.3 225.0 228.6 259.8 263.9

46.9 47.6 54.1 55.0 81.3 82.5 93.8 95.3 93.7 95.2 108.3 110.0 108.2 109.9 124.9 126.9 187.5 190.5 216.5 219.9

40.2 40.8 46.4 47.1 69.6 70.7 80.4 81.7 80.4 81.6 92.8 94.3 92.7 94.2 107.1 108.8 160.7 163.3 185.6 188.5

35.2 35.7 40.6 41.2 60.9 61.9 70.4 71.5 70.3 71.4 81.2 82.5 81.2 82.4 93.7 95.2 140.6 142.9 162.4 165.0

31.2 31.7 36.1 36.7 54.2 55.0 62.5 63.5 62.5 63.5 72.2 73.3 72.1 73.3 83.3 84.6 125.0 127.0 144.3 146.6

28.1 28.6 32.5 33.0 48.8 49.5 56.3 57.2 56.2 57.1 65.0 66.0 64.9 66.0 75.0 76.2 112.5 114.3 129.9 132.0

23.4 23.8 27.1 27.5 40.6 41.3 46.9 47.7 46.9 47.6 54.1 55.0 54.1 55.0 62.5 63.5 93.7 95.2 108.3 110.0

20.1 20.4 23.2 23.6 34.8 35.4 40.2 40.8 40.2 40.8 46.4 47.1 46.4 47.1 53.5 54.4 80.4 81.6 92.8 94.3

17.6 17.9 20.3 20.6 30.5 31.0 35.2 35.7 35.2 35.7 40.6 41.2 40.6 41.2 46.9 47.6 70.3 71.4 81.2 82.5

15.6 15.9 18.0 18.3 27.1 27.5 31.3 31.8 31.2 31.7 36.1 36.7 36.1 36.6 41.6 42.3 62.5 63.5 72.2 73.3

14.1 14.3 16.2 16.5 24.4 24.8 28.1 28.6 28.1 28.6 32.5 33.0 32.5 33.0 37.5 38.1 56.2 57.1 65.0 66.0

Strands

Phase

Voltage

Amps

1

2

3

4

5

6

7

8

9

10

15

16

17

18

19

20

25

30

35

40

45

50

60

70

80

90

100

Strands

Phase

Voltage

Amps

1

2

3

4

5

6

7

8

9

10

15

16

17

18

19

20

25

30

35

40

45

50

60

70

80

90

100

Size-Ampacity

Size-Ampacity

Copper AWG 6 (Max ampacity - 55 amps 60°) Copper AWG 4 (Max ampacity - 70 amps 60°)

7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7

1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

120 120 208 208 240 240 277 277 480 480 120 120 208 208 240 240 277 277 480 480


3666.0 4233.1 6354.4 7337.4 7332.0 8466.2 8462.3 9771.4 14664.0 16932.5 5844.2 6748.2 10129.9 11697.0 11688.3 13496.5 13490.3 15577.2 23376.6 26993.0

1833.0 2116.6 3177.2 3668.7 3666.0 4233.1 4231.2 4885.7 7332.0 8466.2 2922.1 3374.1 5064.9 5848.5 5844.2 6748.2 6745.1 7788.6 11688.3 13496.5

1222.0 1411.0 2118.1 2445.8 2444.0 2822.1 2820.8 3257.1 4888.0 5644.2 1948.1 2249.4 3376.6 3899.0 3896.1 4498.8 4496.8 5192.4 7792.2 8997.7

916.5 1058.3 1588.6 1834.4 1833.0 2116.6 2115.6 2442.9 3666.0 4233.1 1461.0 1687.1 2532.5 2924.2 2922.1 3374.1 3372.6 3894.3 5844.2 6748.2

733.2 846.6 1270.9 1467.5 1466.4 1693.2 1692.5 1954.3 2932.8 3386.5 1168.8 1349.6 2026.0 2339.4 2337.7 2699.3 2698.1 3115.4 4675.3 5398.6

611.0 705.5 1059.1 1222.9 1222.0 1411.0 1410.4 1628.6 2444.0 2822.1 974.0 1124.7 1688.3 1949.5 1948.1 2249.4 2248.4 2596.2 3896.1 4498.8

523.7 604.7 907.8 1048.2 1047.4 1209.5 1208.9 1395.9 2094.9 2418.9 834.9 964.0 1447.1 1671.0 1669.8 1928.1 1927.2 2225.3 3339.5 3856.1

458.2 529.1 794.3 917.2 916.5 1058.3 1057.8 1221.4 1833.0 2116.6 730.5 843.5 1266.2 1462.1 1461.0 1687.1 1686.3 1947.2 2922.1 3374.1

407.3 470.3 706.0 815.3 814.7 940.7 940.3 1085.7 1629.3 1881.4 649.4 749.8 1125.5 1299.7 1298.7 1499.6 1498.9 1730.8 2597.4 2999.2

366.6 423.3 635.4 733.7 733.2 846.6 846.2 977.1 1466.4 1693.2 584.4 674.8 1013.0 1169.7 1168.8 1349.6 1349.0 1557.7 2337.7 2699.3

244.4 282.2 423.6 489.2 488.8 564.4 564.2 651.4 977.6 1128.8 389.6 449.9 675.3 779.8 779.2 899.8 899.4 1038.5 1558.4 1799.5

229.1 264.6 397.1 458.6 458.2 529.1 528.9 610.7 916.5 1058.3 365.3 421.8 633.1 731.1 730.5 843.5 843.1 973.6 1461.0 1687.1

215.6 249.0 373.8 431.6 431.3 498.0 497.8 574.8 862.6 996.0 343.8 397.0 595.9 688.1 687.5 793.9 793.5 916.3 1375.1 1587.8

203.7 235.2 353.0 407.6 407.3 470.3 470.1 542.9 814.7 940.7 324.7 374.9 562.8 649.8 649.4 749.8 749.5 865.4 1298.7 1499.6

192.9 222.8 334.4 386.2 385.9 445.6 445.4 514.3 771.8 891.2 307.6 355.2 533.2 615.6 615.2 710.3 710.0 819.9 1230.3 1420.7

183.3 211.7 317.7 366.9 366.6 423.3 423.1 488.6 733.2 846.6 292.2 337.4 506.5 584.8 584.4 674.8 674.5 778.9 1168.8 1349.6

146.6 169.3 254.2 293.5 293.3 338.6 338.5 390.9 586.6 677.3 233.8 269.9 405.2 467.9 467.5 539.9 539.6 623.1 935.1 1079.7

122.2 141.1 211.8 244.6 244.4 282.2 282.1 325.7 488.8 564.4 194.8 224.9 337.7 389.9 389.6 449.9 449.7 519.2 779.2 899.8

104.7 120.9 181.6 209.6 209.5 241.9 241.8 279.2 419.0 483.8 167.0 192.8 289.4 334.2 334.0 385.6 385.4 445.1 667.9 771.2

91.6 105.8 158.9 183.4 183.3 211.7 211.6 244.3 366.6 423.3 146.1 168.7 253.2 292.4 292.2 337.4 337.3 389.4 584.4 674.8

81.5 94.1 141.2 163.1 162.9 188.1 188.1 217.1 325.9 376.3 129.9 150.0 225.1 259.9 259.7 299.9 299.8 346.2 519.5 599.8

73.3 84.7 127.1 146.7 146.6 169.3 169.2 195.4 293.3 338.6 116.9 135.0 202.6 233.9 233.8 269.9 269.8 311.5 467.5 539.9

61.1 70.6 105.9 122.3 122.2 141.1 141.0 162.9 244.4 282.2 97.4 112.5 168.8 194.9 194.8 224.9 224.8 259.6 389.6 449.9

52.4 60.5 90.8 104.8 104.7 120.9 120.9 139.6 209.5 241.9 83.5 96.4 144.7 167.1 167.0 192.8 192.7 222.5 334.0 385.6

45.8 52.9 79.4 91.7 91.6 105.8 105.8 122.1 183.3 211.7 73.1 84.4 126.6 146.2 146.1 168.7 168.6 194.7 292.2 337.4

40.7 47.0 70.6 81.5 81.5 94.1 94.0 108.6 162.9 188.1 64.9 75.0 112.6 130.0 129.9 150.0 149.9 173.1 259.7 299.9

36.7 42.3 63.5 73.4 73.3 84.7 84.6 97.7 146.6 169.3 58.4 67.5 101.3 117.0 116.9 135.0 134.9 155.8 233.8 269.9

Aluminum AWG 6 (Max ampacity - 40 amps 60°) Aluminum AWG 4 (Max ampacity - 55 amps 60°)

7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7

1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

120 120 208 208 240 240 277 277 480 480 120 120 208 208 240 240 277 277 480 480

Maximum lenghts of wire at 3% voltage drop in feet Maximum lenghts of wire at 3% voltage drop in feet

2227.7 2572.4 3861.4 4458.7 4455.4 5144.7 5142.3 5937.8 8910.9 10289.4 3543.3 4091.5 6141.7 7091.9 7086.6 8182.9 8179.1 9444.5 14173.2 16365.8

1113.9 1286.2 1930.7 2229.4 2227.7 2572.4 2571.2 2968.9 4455.4 5144.7 1771.7 2045.7 3070.9 3545.9 3543.3 4091.5 4089.6 4722.2 7086.6 8182.9

742.6 857.5 1287.1 1486.2 1485.1 1714.9 1714.1 1979.3 2970.3 3429.8 1181.1 1363.8 2047.2 2364.0 2362.2 2727.6 2726.4 3148.2 4724.4 5455.3

556.9 643.1 965.3 1114.7 1113.9 1286.2 1285.6 1484.5 2227.7 2572.4 885.8 1022.9 1535.4 1773.0 1771.7 2045.7 2044.8 2361.1 3543.3 4091.5

445.5 514.5 772.3 891.7 891.1 1028.9 1028.5 1187.6 1782.2 2057.9 708.7 818.3 1228.3 1418.4 1417.3 1636.6 1635.8 1888.9 2834.6 3273.2

371.3 428.7 643.6 743.1 742.6 857.5 857.1 989.6 1485.1 1714.9 590.6 681.9 1023.6 1182.0 1181.1 1363.8 1363.2 1574.1 2362.2 2727.6

318.2 367.5 551.6 637.0 636.5 735.0 734.6 848.3 1273.0 1469.9 506.2 584.5 877.4 1013.1 1012.4 1169.0 1168.4 1349.2 2024.7 2338.0

278.5 321.5 482.7 557.3 556.9 643.1 642.8 742.2 1113.9 1286.2 442.9 511.4 767.7 886.5 885.8 1022.9 1022.4 1180.6 1771.7 2045.7

247.5 285.8 429.0 495.4 495.0 571.6 571.4 659.8 990.1 1143.3 393.7 454.6 682.4 788.0 787.4 909.2 908.8 1049.4 1574.8 1818.4

222.8 257.2 386.1 445.9 445.5 514.5 514.2 593.8 891.1 1028.9 354.3 409.1 614.2 709.2 708.7 818.3 817.9 944.4 1417.3 1636.6

148.5 171.5 257.4 297.2 297.0 343.0 342.8 395.9 594.1 686.0 236.2 272.8 409.4 472.8 472.4 545.5 545.3 629.6 944.9 1091.1

139.2 160.8 241.3 278.7 278.5 321.5 321.4 371.1 556.9 643.1 221.5 255.7 383.9 443.2 442.9 511.4 511.2 590.3 885.8 1022.9

131.0 151.3 227.1 262.3 262.1 302.6 302.5 349.3 524.2 605.3 208.4 240.7 361.3 417.2 416.9 481.3 481.1 555.6 833.7 962.7

123.8 142.9 214.5 247.7 247.5 285.8 285.7 329.9 495.0 571.6 196.9 227.3 341.2 394.0 393.7 454.6 454.4 524.7 787.4 909.2

117.2 135.4 203.2 234.7 234.5 270.8 270.6 312.5 469.0 541.5 186.5 215.3 323.2 373.3 373.0 430.7 430.5 497.1 746.0 861.4

111.4 128.6 193.1 222.9 222.8 257.2 257.1 296.9 445.5 514.5 177.2 204.6 307.1 354.6 354.3 409.1 409.0 472.2 708.7 818.3

89.1 102.9 154.5 178.3 178.2 205.8 205.7 237.5 356.4 411.6 141.7 163.7 245.7 283.7 283.5 327.3 327.2 377.8 566.9 654.6

74.3 85.7 128.7 148.6 148.5 171.5 171.4 197.9 297.0 343.0 118.1 136.4 204.7 236.4 236.2 272.8 272.6 314.8 472.4 545.5

63.6 73.5 110.3 127.4 127.3 147.0 146.9 169.7 254.6 294.0 101.2 116.9 175.5 202.6 202.5 233.8 233.7 269.8 404.9 467.6

55.7 64.3 96.5 111.5 111.4 128.6 128.6 148.4 222.8 257.2 88.6 102.3 153.5 177.3 177.2 204.6 204.5 236.1 354.3 409.1

49.5 57.2 85.8 99.1 99.0 114.3 114.3 132.0 198.0 228.7 78.7 90.9 136.5 157.6 157.5 181.8 181.8 209.9 315.0 363.7

44.6 51.4 77.2 89.2 89.1 102.9 102.8 118.8 178.2 205.8 70.9 81.8 122.8 141.8 141.7 163.7 163.6 188.9 283.5 327.3

37.1 42.9 64.4 74.3 74.3 85.7 85.7 99.0 148.5 171.5 59.1 68.2 102.4 118.2 118.1 136.4 136.3 157.4 236.2 272.8

31.8 36.7 55.2 63.7 63.6 73.5 73.5 84.8 127.3 147.0 50.6 58.4 87.7 101.3 101.2 116.9 116.8 134.9 202.5 233.8

27.8 32.2 48.3 55.7 55.7 64.3 64.3 74.2 111.4 128.6 44.3 51.1 76.8 88.6 88.6 102.3 102.2 118.1 177.2 204.6

24.8 28.6 42.9 49.5 49.5 57.2 57.1 66.0 99.0 114.3 39.4 45.5 68.2 78.8 78.7 90.9 90.9 104.9 157.5 181.8

22.3 25.7 38.6 44.6 44.6 51.4 51.4 59.4 89.1 102.9 35.4 40.9 61.4 70.9 70.9 81.8 81.8 94.4 141.7 163.7

Strands

Phase

Voltage

Amps

1

2

3

4

5

6

7

8

9

10

15

16

17

18

19

20

25

30

35

40

45

50

60

70

80

90

100

Strands

Phase

Voltage

Amps

1

2

3

4

5

6

7

8

9

10

15

16

17

18

19

20

25

30

35

40

45

50

60

70

80

90

100

Size-Ampacity

Size-Ampacity

Copper AWG 3 (Max ampacity - 85 amps 60°) Copper AWG 2 (Max ampacity - 95 amps 60°)

Phase 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

Voltage 120 120 208 208 240 240 277 277 480 480 120 120 208 208 240 240 277 277 480 480

Amps

5 1469 1697 2547 2941 2939 3393 3392 3917 5878 6787 1856 2143 3216 3714 3711 4285 4284 4946 7423 8571

10 735 848 1273 1470 1469 1697 1696 1958 2939 3393 928 1071 1608 1857 1856 2143 2142 2473 3711 4285

15 490 566 849 980 980 1131 1131 1306 1959 2262 619 714 1072 1238 1237 1428 1428 1649 2474 2857

20 367 424 637 735 735 848 848 979 1469 1697 464 536 804 929 928 1071 1071 1237 1856 2143

25 294 339 509 588 588 679 678 783 1176 1357 371 429 643 743 742 857 857 989 1485 1714

30 245 283 424 490 490 566 565 653 980 1131 309 357 536 619 619 714 714 824 1237 1428

40 184 212 318 368 367 424 424 490 735 848 232 268 402 464 464 536 535 618 928 1071

50 147 170 255 294 294 339 339 392 588 679 186 214 322 371 371 429 428 495 742 857

60 122 141 212 245 245 283 283 326 490 566 155 179 268 310 309 357 357 412 619 714

65 113 131 196 226 226 261 261 301 452 522 143 165 247 286 285 330 330 380 571 659

70 105 121 182 210 210 242 242 280 420 485 133 153 230 265 265 306 306 353 530 612

75 98 113 170 196 196 226 226 261 392 452 124 143 214 248 247 286 286 330 495 571

80 92 106 159 184 184 212 212 245 367 424 116 134 201 232 232 268 268 309 464 536

85 86 100 150 173 173 200 200 230 346 399 109 126 189 218 218 252 252 291 437 504

90 82 94 141 163 163 189 188 218 327 377 103 119 179 206 206 238 238 275 412 476

95 77 89 134 155 155 179 179 206 309 357 98 113 169 195 195 226 225 260 391 451

100 73 85 127 147 147 170 170 196 294 339 93 107 161 186 186 214 214 247 371 429

130 57 65 98 113 113 131 130 151 226 261 71 82 124 143 143 165 165 190 285 330

150 49 57 85 98 98 113 113 131 196 226 62 71 107 124 124 143 143 165 247 286

175 42 48 73 84 84 97 97 112 168 194 53 61 92 106 106 122 122 141 212 245

200 37 42 64 74 73 85 85 98 147 170 46 54 80 93 93 107 107 124 186 214

230 32 37 55 64 64 74 74 85 128 148 40 47 70 81 81 93 93 108 161 186

300 24 28 42 49 49 57 57 65 98 113 31 36 54 62 62 71 71 82 124 143

325 23 26 39 45 45 52 52 60 90 104 29 33 49 57 57 66 66 76 114 132

350 21 24 36 42 42 48 48 56 84 97 27 31 46 53 53 61 61 71 106 122

400 18 21 32 37 37 42 42 49 73 85 23 27 40 46 46 54 54 62 93 107

450 16 19 28 33 33 38 38 44 65 75 21 24 36 41 41 48 48 55 82 95

500 15 17 25 29 29 34 34 39 59 68 19 21 32 37 37 43 43 49 74 86

600 12 14 21 25 24 28 28 33 49 57 15 18 27 31 31 36 36 41 62 71

Aluminum AWG 3 (Max ampacity - 65 amps 60°) Aluminum AWG 2 (Max ampacity - 75 amps 60°)

Phase 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

Voltage 120 120 208 208 240 240 277 277 480 480 120 120 208 208 240 240 277 277 480 480

Amps

5 893 1031 1548 1788 1787 2063 2062 2381 3573 4126 1129 1303 1956 2259 2257 2606 2605 3008 4514 5212

10 447 516 774 894 893 1031 1031 1191 1787 2063 564 652 978 1129 1129 1303 1303 1504 2257 2606

15 298 344 516 596 596 688 687 794 1191 1375 376 434 652 753 752 869 868 1003 1505 1737

20 223 258 387 447 447 516 516 595 893 1031 282 326 489 565 564 652 651 752 1129 1303

25 179 206 310 358 357 413 412 476 715 825 226 261 391 452 451 521 521 602 903 1042

30 149 172 258 298 298 344 344 397 596 688 188 217 326 376 376 434 434 501 752 869

40 112 129 194 223 223 258 258 298 447 516 141 163 245 282 282 326 326 376 564 652

50 89 103 155 179 179 206 206 238 357 413 113 130 196 226 226 261 261 301 451 521

60 74 86 129 149 149 172 172 198 298 344 94 109 163 188 188 217 217 251 376 434

65 69 79 119 138 137 159 159 183 275 317 87 100 150 174 174 200 200 231 347 401

70 64 74 111 128 128 147 147 170 255 295 81 93 140 161 161 186 186 215 322 372

75 60 69 103 119 119 138 137 159 238 275 75 87 130 151 150 174 174 201 301 347

100 45 52 77 89 89 103 103 119 179 206 56 65 98 113 113 130 130 150 226 261

125 36 41 62 72 71 83 82 95 143 165 45 52 78 90 90 104 104 120 181 208

150 30 34 52 60 60 69 69 79 119 138 38 43 65 75 75 87 87 100 150 174

175 26 29 44 51 51 59 59 68 102 118 32 37 56 65 64 74 74 86 129 149

200 22 26 39 45 45 52 52 60 89 103 28 33 49 56 56 65 65 75 113 130

230 19 22 34 39 39 45 45 52 78 90 25 28 43 49 49 57 57 65 98 113

250 18 21 31 36 36 41 41 48 71 83 23 26 39 45 45 52 52 60 90 104

255 18 20 30 35 35 40 40 47 70 81 22 26 38 44 44 51 51 59 89 102

285 16 18 27 31 31 36 36 42 63 72 20 23 34 40 40 46 46 53 79 91

300 15 17 26 30 30 34 34 40 60 69 19 22 33 38 38 43 43 50 75 87

325 14 16 24 28 27 32 32 37 55 63 17 20 30 35 35 40 40 46 69 80

350 13 15 22 26 26 29 29 34 51 59 16 19 28 32 32 37 37 43 64 74

400 11 13 19 22 22 26 26 30 45 52 14 16 24 28 28 33 33 38 56 65

450 10 11 17 20 20 23 23 26 40 46 13 14 22 25 25 29 29 33 50 58

500 9 10 15 18 18 21 21 24 36 41 11 13 20 23 23 26 26 30 45 52

Size-Ampacity

Size-Ampacity

Phase

Voltage

Amps

5

10

15

20

25

30

40

50

60

65

70

75

80

85

90

95

100

130

150

175

200

230

300

325

350

400

450

500

600

Phase

Voltage

Amps

5

10

15

20

25

30

40

50

60

65

70

75

100

125

150

175

200

230

250

255

285

300

325

350

400

450

500

Size-Ampacity

Size-Ampacity

Copper AWG 1 (Max ampacity - 130 amps 75°) Copper AWG 1/0 (Max ampacity - 150 amps 75°)

1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

120 120 208 208 240 240 277 277 480 480 120 120 208 208 240 240 277 277 480 480

2338 2699 4052 4679 4675 5399 5396 6231 9351 10797 2951 3407 5115 5906 5902 6815 6811 7865 11803 13629

1169 1350 2026 2339 2338 2699 2698 3115 4675 5399 1475 1704 2557 2953 2951 3407 3406 3933 5902 6815

779 900 1351 1560 1558 1800 1799 2077 3117 3599 984 1136 1705 1969 1967 2272 2270 2622 3934 4543

584 675 1013 1170 1169 1350 1349 1558 2338 2699 738 852 1279 1477 1475 1704 1703 1966 2951 3407

468 540 810 936 935 1080 1079 1246 1870 2159 590 681 1023 1181 1180 1363 1362 1573 2361 2726

390 450 675 780 779 900 899 1038 1558 1800 492 568 852 984 984 1136 1135 1311 1967 2272

292 337 506 585 584 675 675 779 1169 1350 369 426 639 738 738 852 851 983 1475 1704

234 270 405 468 468 540 540 623 935 1080 295 341 511 591 590 681 681 787 1180 1363

195 225 338 390 390 450 450 519 779 900 246 284 426 492 492 568 568 655 984 1136

180 208 312 360 360 415 415 479 719 831 227 262 393 454 454 524 524 605 908 1048

167 193 289 334 334 386 385 445 668 771 211 243 365 422 422 487 487 562 843 974

156 180 270 312 312 360 360 415 623 720 197 227 341 394 393 454 454 524 787 909

146 169 253 292 292 337 337 389 584 675 184 213 320 369 369 426 426 492 738 852

138 159 238 275 275 318 317 367 550 635 174 200 301 347 347 401 401 463 694 802

130 150 225 260 260 300 300 346 519 600 164 189 284 328 328 379 378 437 656 757

123 142 213 246 246 284 284 328 492 568 155 179 269 311 311 359 358 414 621 717

117 135 203 234 234 270 270 312 468 540 148 170 256 295 295 341 341 393 590 681

90 104 156 180 180 208 208 240 360 415 113 131 197 227 227 262 262 303 454 524

78 90 135 156 156 180 180 208 312 360 98 114 170 197 197 227 227 262 393 454

67 77 116 134 134 154 154 178 267 308 84 97 146 169 169 195 195 225 337 389

58 67 101 117 117 135 135 156 234 270 74 85 128 148 148 170 170 197 295 341

51 59 88 102 102 117 117 135 203 235 64 74 111 128 128 148 148 171 257 296

39 45 68 78 78 90 90 104 156 180 49 57 85 98 98 114 114 131 197 227

36 42 62 72 72 83 83 96 144 166 45 52 79 91 91 105 105 121 182 210

33 39 58 67 67 77 77 89 134 154 42 49 73 84 84 97 97 112 169 195

29 34 51 58 58 67 67 78 117 135 37 43 64 74 74 85 85 98 148 170

26 30 45 52 52 60 60 69 104 120 33 38 57 66 66 76 76 87 131 151

23 27 41 47 47 54 54 62 94 108 30 34 51 59 59 68 68 79 118 136

19 22 34 39 39 45 45 52 78 90 25 28 43 49 49 57 57 66 98 114

Aluminum AWG 1 (Max ampacity - 100 amps 75°) Aluminum AWG 1/0 (Max ampacity - 120 amps 75°)

1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

120 120 208 208 240 240 277 277 480 480 120 120 208 208 240 240 277 277 480 480

1423 1643 2466 2848 2846 3286 3285 3793 5692 6572 1791 2068 3104 3585 3582 4136 4134 4774 7164 8272

711 822 1233 1424 1423 1643 1642 1896 2846 3286 896 1034 1552 1792 1791 2068 2067 2387 3582 4136

474 548 822 949 949 1095 1095 1264 1897 2191 597 689 1035 1195 1194 1379 1378 1591 2388 2757

356 411 617 712 711 822 821 948 1423 1643 448 517 776 896 896 1034 1034 1193 1791 2068

285 329 493 570 569 657 657 759 1138 1314 358 414 621 717 716 827 827 955 1433 1654

237 274 411 475 474 548 547 632 949 1095 299 345 517 597 597 689 689 796 1194 1379

178 205 308 356 356 411 411 474 711 822 224 259 388 448 448 517 517 597 896 1034

142 164 247 285 285 329 328 379 569 657 179 207 310 358 358 414 413 477 716 827

119 137 206 237 237 274 274 316 474 548 149 172 259 299 299 345 345 398 597 689

109 126 190 219 219 253 253 292 438 506 138 159 239 276 276 318 318 367 551 636

102 117 176 203 203 235 235 271 407 469 128 148 222 256 256 295 295 341 512 591

95 110 164 190 190 219 219 253 379 438 119 138 207 239 239 276 276 318 478 551

71 82 123 142 142 164 164 190 285 329 90 103 155 179 179 207 207 239 358 414

57 66 99 114 114 131 131 152 228 263 72 83 124 143 143 165 165 191 287 331

47 55 82 95 95 110 109 126 190 219 60 69 103 119 119 138 138 159 239 276

41 47 70 81 81 94 94 108 163 188 51 59 89 102 102 118 118 136 205 236

36 41 62 71 71 82 82 95 142 164 45 52 78 90 90 103 103 119 179 207

31 36 54 62 62 71 71 82 124 143 39 45 67 78 78 90 90 104 156 180

28 33 49 57 57 66 66 76 114 131 36 41 62 72 72 83 83 95 143 165

28 32 48 56 56 64 64 74 112 129 35 41 61 70 70 81 81 94 140 162

25 29 43 50 50 58 58 67 100 115 31 36 54 63 63 73 73 84 126 145

24 27 41 47 47 55 55 63 95 110 30 34 52 60 60 69 69 80 119 138

22 25 38 44 44 51 51 58 88 101 28 32 48 55 55 64 64 73 110 127

20 23 35 41 41 47 47 54 81 94 26 30 44 51 51 59 59 68 102 118

18 21 31 36 36 41 41 47 71 82 22 26 39 45 45 52 52 60 90 103

16 18 27 32 32 37 36 42 63 73 20 23 34 40 40 46 46 53 80 92

14 16 25 28 28 33 33 38 57 66 18 21 31 36 36 41 41 48 72 83

Phase

Voltage

Amps

5

10

15

20

25

30

40

50

60

65

70

75

80

85

90

95

100

130

150

175

200

230

300

325

350

400

450

500

600

Phase

Voltage

Amps

5

10

15

20

25

30

40

50

60

65

70

75

100

125

150

175

200

230

250

255

285

300

325

350

400

450

500

Size-Ampacity

Size-Ampacity

Copper AWG 2/0 (Max ampacity - 175 amps 75°) Copper AWG 3/0 (Max ampacity - 200 amps 75°)

1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

120 120 208 208 240 240 277 277 480 480 120 120 208 208 240 240 277 277 480 480

3723 4299 6453 7451 7446 8598 8594 9923 14891 17195 4700 5427 8146 9406 9399 10854 10849 12527 18799 21707

1861 2149 3226 3726 3723 4299 4297 4962 7446 8598 2350 2713 4073 4703 4700 5427 5424 6263 9399 10854

1241 1433 2151 2484 2482 2866 2865 3308 4964 5732 1567 1809 2715 3135 3133 3618 3616 4176 6266 7236

931 1075 1613 1863 1861 2149 2148 2481 3723 4299 1175 1357 2037 2352 2350 2713 2712 3132 4700 5427

745 860 1291 1490 1489 1720 1719 1985 2978 3439 940 1085 1629 1881 1880 2171 2170 2505 3760 4341

620 716 1075 1242 1241 1433 1432 1654 2482 2866 783 904 1358 1568 1567 1809 1808 2088 3133 3618

465 537 807 931 931 1075 1074 1240 1861 2149 587 678 1018 1176 1175 1357 1356 1566 2350 2713

372 430 645 745 745 860 859 992 1489 1720 470 543 815 941 940 1085 1085 1253 1880 2171

310 358 538 621 620 716 716 827 1241 1433 392 452 679 784 783 904 904 1044 1567 1809

286 331 496 573 573 661 661 763 1145 1323 362 417 627 724 723 835 835 964 1446 1670

266 307 461 532 532 614 614 709 1064 1228 336 388 582 672 671 775 775 895 1343 1551

248 287 430 497 496 573 573 662 993 1146 313 362 543 627 627 724 723 835 1253 1447

233 269 403 466 465 537 537 620 931 1075 294 339 509 588 587 678 678 783 1175 1357

219 253 380 438 438 506 506 584 876 1011 276 319 479 553 553 638 638 737 1106 1277

207 239 358 414 414 478 477 551 827 955 261 301 453 523 522 603 603 696 1044 1206

196 226 340 392 392 453 452 522 784 905 247 286 429 495 495 571 571 659 989 1142

186 215 323 373 372 430 430 496 745 860 235 271 407 470 470 543 542 626 940 1085

143 165 248 287 286 331 331 382 573 661 181 209 313 362 362 417 417 482 723 835

124 143 215 248 248 287 286 331 496 573 157 181 272 314 313 362 362 418 627 724

106 123 184 213 213 246 246 284 425 491 134 155 233 269 269 310 310 358 537 620

93 107 161 186 186 215 215 248 372 430 117 136 204 235 235 271 271 313 470 543

81 93 140 162 162 187 187 216 324 374 102 118 177 204 204 236 236 272 409 472

62 72 108 124 124 143 143 165 248 287 78 90 136 157 157 181 181 209 313 362

57 66 99 115 115 132 132 153 229 265 72 83 125 145 145 167 167 193 289 334

53 61 92 106 106 123 123 142 213 246 67 78 116 134 134 155 155 179 269 310

47 54 81 93 93 107 107 124 186 215 59 68 102 118 117 136 136 157 235 271

41 48 72 83 83 96 95 110 165 191 52 60 91 105 104 121 121 139 209 241

37 43 65 75 74 86 86 99 149 172 47 54 81 94 94 109 108 125 188 217

31 36 54 62 62 72 72 83 124 143 39 45 68 78 78 90 90 104 157 181

Aluminum AWG 2/0 (Max ampacity - 135 amps 75°) Aluminum AWG 3/0 (Max ampacity - 155 amps 75°)

1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

120 120 208 208 240 240 277 277 480 480 120 120 208 208 240 240 277 277 480 480

2264 2614 3925 4532 4528 5229 5226 6035 9057 10458 2857 3299 4952 5719 5714 6598 6595 7616 11429 13197

1132 1307 1962 2266 2264 2614 2613 3017 4528 5229 1429 1650 2476 2859 2857 3299 3298 3808 5714 6598

755 871 1308 1511 1509 1743 1742 2012 3019 3486 952 1100 1651 1906 1905 2199 2198 2539 3810 4399

566 654 981 1133 1132 1307 1307 1509 2264 2614 714 825 1238 1430 1429 1650 1649 1904 2857 3299

453 523 785 906 906 1046 1045 1207 1811 2092 571 660 990 1144 1143 1320 1319 1523 2286 2639

377 436 654 755 755 871 871 1006 1509 1743 476 550 825 953 952 1100 1099 1269 1905 2199

283 327 491 566 566 654 653 754 1132 1307 357 412 619 715 714 825 824 952 1429 1650

226 261 392 453 453 523 523 603 906 1046 286 330 495 572 571 660 660 762 1143 1320

189 218 327 378 377 436 436 503 755 871 238 275 413 477 476 550 550 635 952 1100

174 201 302 349 348 402 402 464 697 804 220 254 381 440 440 508 507 586 879 1015

162 187 280 324 323 373 373 431 647 747 204 236 354 408 408 471 471 544 816 943

151 174 262 302 302 349 348 402 604 697 190 220 330 381 381 440 440 508 762 880

113 131 196 227 226 261 261 302 453 523 143 165 248 286 286 330 330 381 571 660

91 105 157 181 181 209 209 241 362 418 114 132 198 229 229 264 264 305 457 528

75 87 131 151 151 174 174 201 302 349 95 110 165 191 190 220 220 254 381 440

65 75 112 129 129 149 149 172 259 299 82 94 141 163 163 189 188 218 327 377

57 65 98 113 113 131 131 151 226 261 71 82 124 143 143 165 165 190 286 330

49 57 85 99 98 114 114 131 197 227 62 72 108 124 124 143 143 166 248 287

45 52 78 91 91 105 105 121 181 209 57 66 99 114 114 132 132 152 229 264

44 51 77 89 89 103 102 118 178 205 56 65 97 112 112 129 129 149 224 259

40 46 69 80 79 92 92 106 159 183 50 58 87 100 100 116 116 134 201 232

38 44 65 76 75 87 87 101 151 174 48 55 83 95 95 110 110 127 190 220

35 40 60 70 70 80 80 93 139 161 44 51 76 88 88 102 101 117 176 203

32 37 56 65 65 75 75 86 129 149 41 47 71 82 82 94 94 109 163 189

28 33 49 57 57 65 65 75 113 131 36 41 62 71 71 82 82 95 143 165

25 29 44 50 50 58 58 67 101 116 32 37 55 64 63 73 73 85 127 147

23 26 39 45 45 52 52 60 91 105 29 33 50 57 57 66 66 76 114 132

Phase

Voltage

Amps

5

10

15

20

25

30

40

50

60

65

70

75

80

85

90

95

100

130

150

175

200

230

300

325

350

400

450

500

600

Phase

Voltage

Amps

5

10

15

20

25

30

40

50

60

65

70

75

100

125

150

175

200

230

250

255

285

300

325

350

400

450

500

Size-Ampacity

Size-Ampacity

Copper AWG 4/0 (Max ampacity - 230 amps 75°) Copper 250 kcmil (Max ampacity - 255 amps 75°)

1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

120 120 208 208 240 240 277 277 480 480 120 120 208 208 240 240 277 277 480 480

5921 6837 10263 11851 11842 13674 13668 15782 23684 27348 6990 8072 12117 13991 13981 16143 16136 18632 27961 32287

2961 3419 5132 5925 5921 6837 6834 7891 11842 13674 3495 4036 6058 6995 6990 8072 8068 9316 13981 16143

1974 2279 3421 3950 3947 4558 4556 5261 7895 9116 2330 2691 4039 4664 4660 5381 5379 6211 9320 10762

1480 1709 2566 2963 2961 3419 3417 3946 5921 6837 1748 2018 3029 3498 3495 4036 4034 4658 6990 8072

1184 1367 2053 2370 2368 2735 2734 3156 4737 5470 1398 1614 2423 2798 2796 3229 3227 3726 5592 6457

987 1140 1711 1975 1974 2279 2278 2630 3947 4558 1165 1345 2019 2332 2330 2691 2689 3105 4660 5381

740 855 1283 1481 1480 1709 1708 1973 2961 3419 874 1009 1515 1749 1748 2018 2017 2329 3495 4036

592 684 1026 1185 1184 1367 1367 1578 2368 2735 699 807 1212 1399 1398 1614 1614 1863 2796 3229

493 570 855 988 987 1140 1139 1315 1974 2279 583 673 1010 1166 1165 1345 1345 1553 2330 2691

455 526 789 912 911 1052 1051 1214 1822 2104 538 621 932 1076 1075 1242 1241 1433 2151 2484

423 488 733 846 846 977 976 1127 1692 1953 499 577 865 999 999 1153 1153 1331 1997 2306

395 456 684 790 789 912 911 1052 1579 1823 466 538 808 933 932 1076 1076 1242 1864 2152

370 427 641 741 740 855 854 986 1480 1709 437 504 757 874 874 1009 1008 1165 1748 2018

348 402 604 697 697 804 804 928 1393 1609 411 475 713 823 822 950 949 1096 1645 1899

329 380 570 658 658 760 759 877 1316 1519 388 448 673 777 777 897 896 1035 1553 1794

312 360 540 624 623 720 719 831 1247 1439 368 425 638 736 736 850 849 981 1472 1699

296 342 513 593 592 684 683 789 1184 1367 350 404 606 700 699 807 807 932 1398 1614

228 263 395 456 455 526 526 607 911 1052 269 310 466 538 538 621 621 717 1075 1242

197 228 342 395 395 456 456 526 789 912 233 269 404 466 466 538 538 621 932 1076

169 195 293 339 338 391 391 451 677 781 200 231 346 400 399 461 461 532 799 922

148 171 257 296 296 342 342 395 592 684 175 202 303 350 350 404 403 466 699 807

129 149 223 258 257 297 297 343 515 595 152 175 263 304 304 351 351 405 608 702

99 114 171 198 197 228 228 263 395 456 117 135 202 233 233 269 269 311 466 538

91 105 158 182 182 210 210 243 364 421 108 124 186 215 215 248 248 287 430 497

85 98 147 169 169 195 195 225 338 391 100 115 173 200 200 231 231 266 399 461

74 85 128 148 148 171 171 197 296 342 87 101 151 175 175 202 202 233 350 404

66 76 114 132 132 152 152 175 263 304 78 90 135 155 155 179 179 207 311 359

59 68 103 119 118 137 137 158 237 273 70 81 121 140 140 161 161 186 280 323

49 57 86 99 99 114 114 132 197 228 58 67 101 117 117 135 134 155 233 269

Aluminum AWG 4/0 (Max ampacity -180 amps 75°) Aluminum 250 kcmil (Max ampacity - 205 amps 75°)

1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

120 120 208 208 240 240 277 277 480 480 120 120 208 208 240 240 277 277 480 480

3600 4157 6240 7205 7200 8314 8310 9596 14400 16628 4250 4908 7367 8507 8501 9816 9811 11329 17001 19631

1800 2078 3120 3603 3600 4157 4155 4798 7200 8314 2125 2454 3684 4253 4250 4908 4906 5664 8501 9816

1200 1386 2080 2402 2400 2771 2770 3199 4800 5543 1417 1636 2456 2836 2834 3272 3270 3776 5667 6544

900 1039 1560 1801 1800 2078 2078 2399 3600 4157 1063 1227 1842 2127 2125 2454 2453 2832 4250 4908

720 831 1248 1441 1440 1663 1662 1919 2880 3326 850 982 1473 1701 1700 1963 1962 2266 3400 3926

600 693 1040 1201 1200 1386 1385 1599 2400 2771 708 818 1228 1418 1417 1636 1635 1888 2834 3272

450 520 780 901 900 1039 1039 1199 1800 2078 531 613 921 1063 1063 1227 1226 1416 2125 2454

360 416 624 721 720 831 831 960 1440 1663 425 491 737 851 850 982 981 1133 1700 1963

300 346 520 600 600 693 693 800 1200 1386 354 409 614 709 708 818 818 944 1417 1636

277 320 480 554 554 640 639 738 1108 1279 327 378 567 654 654 755 755 871 1308 1510

257 297 446 515 514 594 594 685 1029 1188 304 351 526 608 607 701 701 809 1214 1402

240 277 416 480 480 554 554 640 960 1109 283 327 491 567 567 654 654 755 1133 1309

180 208 312 360 360 416 416 480 720 831 213 245 368 425 425 491 491 566 850 982

144 166 250 288 288 333 332 384 576 665 170 196 295 340 340 393 392 453 680 785

120 139 208 240 240 277 277 320 480 554 142 164 246 284 283 327 327 378 567 654

103 119 178 206 206 238 237 274 411 475 121 140 210 243 243 280 280 324 486 561

90 104 156 180 180 208 208 240 360 416 106 123 184 213 213 245 245 283 425 491

78 90 136 157 157 181 181 209 313 361 92 107 160 185 185 213 213 246 370 427

72 83 125 144 144 166 166 192 288 333 85 98 147 170 170 196 196 227 340 393

71 82 122 141 141 163 163 188 282 326 83 96 144 167 167 192 192 222 333 385

63 73 109 126 126 146 146 168 253 292 75 86 129 149 149 172 172 199 298 344

60 69 104 120 120 139 139 160 240 277 71 82 123 142 142 164 164 189 283 327

55 64 96 111 111 128 128 148 222 256 65 76 113 131 131 151 151 174 262 302

51 59 89 103 103 119 119 137 206 238 61 70 105 122 121 140 140 162 243 280

45 52 78 90 90 104 104 120 180 208 53 61 92 106 106 123 123 142 213 245

40 46 69 80 80 92 92 107 160 185 47 55 82 95 94 109 109 126 189 218

36 42 62 72 72 83 83 96 144 166 43 49 74 85 85 98 98 113 170 196

Phase

Voltage

Amps

5

10

15

20

25

30

40

50

60

65

70

75

80

85

90

95

100

130

150

175

200

230

300

325

350

400

450

500

600

Phase

Voltage

Amps

5

10

15

20

25

30

40

50

60

65

70

75

100

125

150

175

200

230

250

255

285

300

325

350

400

450

500

Size-Ampacity

Size-Ampacity

Copper 300 kcmil (Max ampacity - 285 amps 75°) Copper 350 kcmil (Max ampacity - 310 amps 75°)

1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

120 120 208 208 240 240 277 277 480 480 120 120 208 208 240 240 277 277 480 480

8392 9690 14545 16796 16783 19380 19371 22367 33566 38759 9809 11327 17003 19633 19619 22654 22643 26146 39237 45307

4196 4845 7273 8398 8392 9690 9685 11184 16783 19380 4905 5663 8501 9817 9809 11327 11322 13073 19619 22654

2797 3230 4848 5599 5594 6460 6457 7456 11189 12920 3270 3776 5668 6544 6540 7551 7548 8715 13079 15102

2098 2422 3636 4199 4196 4845 4843 5592 8392 9690 2452 2832 4251 4908 4905 5663 5661 6536 9809 11327

1678 1938 2909 3359 3357 3876 3874 4473 6713 7752 1962 2265 3401 3927 3924 4531 4529 5229 7847 9061

1399 1615 2424 2799 2797 3230 3228 3728 5594 6460 1635 1888 2834 3272 3270 3776 3774 4358 6540 7551

1049 1211 1818 2099 2098 2422 2421 2796 4196 4845 1226 1416 2125 2454 2452 2832 2830 3268 4905 5663

839 969 1455 1680 1678 1938 1937 2237 3357 3876 981 1133 1700 1963 1962 2265 2264 2615 3924 4531

699 807 1212 1400 1399 1615 1614 1864 2797 3230 817 944 1417 1636 1635 1888 1887 2179 3270 3776

646 745 1119 1292 1291 1491 1490 1721 2582 2981 755 871 1308 1510 1509 1743 1742 2011 3018 3485

599 692 1039 1200 1199 1384 1384 1598 2398 2769 701 809 1214 1402 1401 1618 1617 1868 2803 3236

559 646 970 1120 1119 1292 1291 1491 2238 2584 654 755 1134 1309 1308 1510 1510 1743 2616 3020

524 606 909 1050 1049 1211 1211 1398 2098 2422 613 708 1063 1227 1226 1416 1415 1634 2452 2832

494 570 856 988 987 1140 1139 1316 1974 2280 577 666 1000 1155 1154 1333 1332 1538 2308 2665

466 538 808 933 932 1077 1076 1243 1865 2153 545 629 945 1091 1090 1259 1258 1453 2180 2517

442 510 766 884 883 1020 1020 1177 1767 2040 516 596 895 1033 1033 1192 1192 1376 2065 2385

420 484 727 840 839 969 969 1118 1678 1938 490 566 850 982 981 1133 1132 1307 1962 2265

323 373 559 646 646 745 745 860 1291 1491 377 436 654 755 755 871 871 1006 1509 1743

280 323 485 560 559 646 646 746 1119 1292 327 378 567 654 654 755 755 872 1308 1510

240 277 416 480 480 554 553 639 959 1107 280 324 486 561 561 647 647 747 1121 1294

210 242 364 420 420 484 484 559 839 969 245 283 425 491 490 566 566 654 981 1133

182 211 316 365 365 421 421 486 730 843 213 246 370 427 426 492 492 568 853 985

140 161 242 280 280 323 323 373 559 646 163 189 283 327 327 378 377 436 654 755

129 149 224 258 258 298 298 344 516 596 151 174 262 302 302 349 348 402 604 697

120 138 208 240 240 277 277 320 480 554 140 162 243 280 280 324 323 374 561 647

105 121 182 210 210 242 242 280 420 484 123 142 213 245 245 283 283 327 490 566

93 108 162 187 186 215 215 249 373 431 109 126 189 218 218 252 252 291 436 503

84 97 145 168 168 194 194 224 336 388 98 113 170 196 196 227 226 261 392 453

70 81 121 140 140 161 161 186 280 323 82 94 142 164 163 189 189 218 327 378

Aluminum 300 kcmil (Max ampacity - 230 amps 75°) Aluminum 350 kcmil (Max ampacity - 350 amps 75°)

1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

120 120 208 208 240 240 277 277 480 480 120 120 208 208 240 240 277 277 480 480

5092 5880 8826 10191 10184 11759 11754 13572 20368 23519 5950 6871 10314 11910 11901 13742 13736 15860 23802 27484

2546 2940 4413 5096 5092 5880 5877 6786 10184 11759 2975 3435 5157 5955 5950 6871 6868 7930 11901 13742

1697 1960 2942 3397 3395 3920 3918 4524 6789 7840 1983 2290 3438 3970 3967 4581 4579 5287 7934 9161

1273 1470 2207 2548 2546 2940 2938 3393 5092 5880 1488 1718 2579 2977 2975 3435 3434 3965 5950 6871

1018 1176 1765 2038 2037 2352 2351 2714 4074 4704 1190 1374 2063 2382 2380 2748 2747 3172 4760 5497

849 980 1471 1699 1697 1960 1959 2262 3395 3920 992 1145 1719 1985 1983 2290 2289 2643 3967 4581

636 735 1103 1274 1273 1470 1469 1697 2546 2940 744 859 1289 1489 1488 1718 1717 1983 2975 3435

509 588 883 1019 1018 1176 1175 1357 2037 2352 595 687 1031 1191 1190 1374 1374 1586 2380 2748

424 490 736 849 849 980 979 1131 1697 1960 496 573 860 992 992 1145 1145 1322 1983 2290

392 452 679 784 783 905 904 1044 1567 1809 458 529 793 916 915 1057 1057 1220 1831 2114

364 420 630 728 727 840 840 969 1455 1680 425 491 737 851 850 982 981 1133 1700 1963

339 392 588 679 679 784 784 905 1358 1568 397 458 688 794 793 916 916 1057 1587 1832

255 294 441 510 509 588 588 679 1018 1176 298 344 516 595 595 687 687 793 1190 1374

204 235 353 408 407 470 470 543 815 941 238 275 413 476 476 550 549 634 952 1099

170 196 294 340 339 392 392 452 679 784 198 229 344 397 397 458 458 529 793 916

145 168 252 291 291 336 336 388 582 672 170 196 295 340 340 393 392 453 680 785

127 147 221 255 255 294 294 339 509 588 149 172 258 298 298 344 343 397 595 687

111 128 192 222 221 256 256 295 443 511 129 149 224 259 259 299 299 345 517 597

102 118 177 204 204 235 235 271 407 470 119 137 206 238 238 275 275 317 476 550

100 115 173 200 200 231 230 266 399 461 117 135 202 234 233 269 269 311 467 539

89 103 155 179 179 206 206 238 357 413 104 121 181 209 209 241 241 278 418 482

85 98 147 170 170 196 196 226 339 392 99 115 172 198 198 229 229 264 397 458

78 90 136 157 157 181 181 209 313 362 92 106 159 183 183 211 211 244 366 423

73 84 126 146 145 168 168 194 291 336 85 98 147 170 170 196 196 227 340 393

64 73 110 127 127 147 147 170 255 294 74 86 129 149 149 172 172 198 298 344

57 65 98 113 113 131 131 151 226 261 66 76 115 132 132 153 153 176 264 305

51 59 88 102 102 118 118 136 204 235 60 69 103 119 119 137 137 159 238 275

600 7 9 13 15 15 17 17 20 30 34 9 11 16 19 19 22 22 25 38 43

600 12 14 21 24 24 27 27 32 47 55 15 17 26 30 30 34 34 40 60 69

600 19 22 33 38 38 44 44 50 75 87 24 27 41 48 48 55 55 63 95 110

600 30 35 52 60 60 69 69 80 120 139 35 41 61 71 71 82 82 94 142 164

600 42 49 74 85 85 98 98 113 170 196 50 57 86 99 99 115 114 132 198 229

(140ºF Through 194ºF), Not More Than Three Current-Carrying Conductors in Raceway, Cable,

(Note: This table can only be used if each set of parallel wires in placed in separate conduit.)

Temperature Rating of Conductor (See Table 310.13)

COPPER ALUMINUM OR COPPER-CLAD AL

1 ea. 1/0 125 150 170 100 120 135 1 ea. 1/01 ea. 2/0 145 175 195 115 135 150 1 ea. 2/01 ea. 3/0 165 200 225 130 155 175 1 ea. 3/01 ea. 4/0 195 230 260 150 180 205 1 ea. 4/01 ea. 250 215 255 290 170 205 230 1 ea. 2501 ea. 300 240 285 320 190 230 255 1 ea. 3002 ea. 1/0 250 300 340 200 240 270 2 ea. 1/01 ea. 350 260 310 350 210 250 280 1 ea. 3501 ea. 400 280 335 380 225 270 305 1 ea. 4002 ea. 2/0 290 350 390 230 270 300 2 ea. 2/01 ea. 500 320 380 430 260 310 350 1 ea. 5002 ea. 3/0 330 400 450 260 310 350 2 ea. 3/01 ea. 600 355 420 475 285 340 385 1 ea. 6003 ea. 1/0 375 450 510 300 360 405 3 ea. 1/01 ea. 700 385 460 520 310 375 420 1 ea. 7002 ea. 4/0 390 460 520 300 360 410 2 ea. 4/01 ea. 750 400 475 535 320 385 435 1 ea. 7501 ea. 800 410 490 555 330 395 450 1 ea. 8002 ea. 250 430 510 580 340 410 460 2 ea. 2501 ea. 900 435 520 585 355 425 480 1 ea. 9003 ea. 2/0 435 525 585 345 405 450 3 ea. 2/0

1 ea. 1000 455 545 615 375 445 500 1 ea. 10002 ea. 300 480 570 640 380 460 510 2 ea. 300

1 ea. 1250 495 590 665 405 485 545 1 ea. 12503 ea. 3/0 495 600 675 390 465 525 3 ea. 3/04 ea. 1/0 500 600 680 400 480 540 4 ea. 1/0

1 ea. 1500 520 625 705 435 520 585 1 ea. 15002 ea. 350 520 620 700 420 500 560 2 ea. 350

1 ea. 1750 545 650 735 455 545 615 1 ea. 17501 ea. 2000 560 665 750 470 560 630 1 ea. 20002 ea. 400 560 670 760 450 540 610 2 ea. 4004 ea. 2/0 580 700 780 460 540 600 4 ea. 2/03 ea. 4/0 585 690 780 450 540 615 3 ea. 4/05 ea. 1/0 625 750 850 500 600 675 5 ea. 1/02 ea. 500 640 760 860 520 620 700 2 ea. 5003 ea. 250 645 765 870 510 615 690 3 ea. 2504 ea. 3/0 660 800 900 520 620 700 4 ea. 3/02 ea. 600 710 840 950 570 680 770 2 ea. 6003 ea. 300 720 855 960 570 690 765 3 ea. 300

Table 310.16 Allowable Ampacities of Insulated Conductors Rated 0 Through 2000 Volts, 60ºC through 90ºC

or Earth (Directly Buried), Based on ambient Temperature of 30ºC (86ºF) - Parallel wires

60º C (140º F)

75º C (167º F)

90º C (194º F)

60º C (140º F)

75º C (167º F)

90º C (194º F)

Copper Parallel

ConductorsTypes TW,

UF

Types RHW, THHW, THW,

THWN, XHHW, USE, ZW

Types TBS, SA, SIS, FEP, FEPB, MI, RHH, RHW-2, THHN,

THHW, THW-2, THWN-2, USE-2, XHH, XHHW, XHHW-2,

ZW-2Types TW,

UF


THWN, XHHW, USE

Types TBS, SA, SIS, THHN, THHW, THW-2, THWN-2, RHH, RHW-2, USE-2, XHH, XHHW,

XHHW-2, ZW-2

Aluminum Parallel

Conductors

Qty and Size AWG or kcmil








60º C (140º F)

75º C (167º F)

90º C (194º F)

60º C (140º F)

75º C (167º F)

90º C (194º F)

Copper Parallel

ConductorsTypes TW,

UF


THWN, XHHW, USE, ZW



ZW-2Types TW,

UF


THWN, XHHW, USE


XHHW-2, ZW-2

Aluminum Parallel

Conductors



5 ea. 2/0 725 875 975 575 675 750 5 ea. 2/06 ea. 1/0 750 900 1020 600 720 810 6 ea. 1/02 ea. 700 770 920 1040 620 750 840 2 ea. 7003 ea. 350 780 930 1050 630 750 840 3 ea. 3504 ea. 4/0 780 920 1040 600 720 820 4 ea. 4/02 ea. 750 800 950 1070 640 770 870 2 ea. 7502 ea. 800 820 980 1110 660 790 900 2 ea. 8005 ea. 3/0 825 1000 1125 650 775 875 5 ea. 3/03 ea. 400 840 1005 1140 675 810 915 3 ea. 4004 ea. 250 860 1020 1160 680 820 920 4 ea. 2502 ea. 900 870 1040 1170 710 850 960 2 ea. 9006 ea. 2/0 870 1050 1170 690 810 900 6 ea. 2/0

2 ea. 1000 910 1090 1230 750 890 1000 2 ea. 10003 ea. 500 960 1140 1290 780 930 1050 3 ea. 5004 ea. 300 960 1140 1280 760 920 1020 4 ea. 3005 ea. 4/0 975 1150 1300 750 900 1025 5 ea. 4/0

2 ea. 1250 990 1180 1330 810 970 1090 2 ea. 12506 ea. 3/0 990 1200 1350 780 930 1050 6 ea. 3/0

2 ea. 1500 1040 1250 1410 870 1040 1170 2 ea. 15004 ea. 350 1040 1240 1400 840 1000 1120 4 ea. 3503 ea. 600 1065 1260 1425 855 1020 1155 3 ea. 6005 ea. 250 1075 1275 1450 850 1025 1150 5 ea. 250

2 ea. 1750 1090 1300 1470 910 1090 1230 2 ea. 17502 ea. 2000 1120 1330 1500 940 1120 1260 2 ea. 20004 ea. 400 1120 1340 1520 900 1080 1220 4 ea. 4003 ea. 700 1155 1380 1560 930 1125 1260 3 ea. 7006 ea. 4/0 1170 1380 1560 900 1080 1230 6 ea. 4/03 ea. 750 1200 1425 1605 960 1155 1305 3 ea. 7505 ea. 300 1200 1425 1600 950 1150 1275 5 ea. 3003 ea. 800 1230 1470 1665 990 1185 1350 3 ea. 8004 ea. 500 1280 1520 1720 1040 1240 1400 4 ea. 5006 ea. 250 1290 1530 1740 1020 1230 1380 6 ea. 2505 ea. 350 1300 1550 1750 1050 1250 1400 5 ea. 3503 ea. 900 1305 1560 1755 1065 1275 1440 3 ea. 900


3 ea. 1250 1485 1770 1995 1215 1455 1635 3 ea. 1250







60º C (140º F)

75º C (167º F)

90º C (194º F)

60º C (140º F)

75º C (167º F)

90º C (194º F)

Copper Parallel

ConductorsTypes TW,

UF


THWN, XHHW, USE, ZW



ZW-2Types TW,

UF


THWN, XHHW, USE


XHHW-2, ZW-2

Aluminum Parallel

Conductors



4 ea. 700 1540 1840 2080 1240 1500 1680 4 ea. 7003 ea. 1500 1560 1875 2115 1305 1560 1755 3 ea. 15006 ea. 350 1560 1860 2100 1260 1500 1680 6 ea. 3504 ea. 750 1600 1900 2140 1280 1540 1740 4 ea. 7505 ea. 500 1600 1900 2150 1300 1550 1750 5 ea. 500

3 ea. 1750 1635 1950 2205 1365 1635 1845 3 ea. 17504 ea. 800 1640 1960 2220 1320 1580 1800 4 ea. 800


4 ea. 1000 1820 2180 2460 1500 1780 2000 4 ea. 10006 ea. 500 1920 2280 2580 1560 1860 2100 6 ea. 5005 ea. 700 1925 2300 2600 1550 1875 2100 5 ea. 700

4 ea. 1250 1980 2360 2660 1620 1940 2180 4 ea. 12505 ea. 750 2000 2375 2675 1600 1925 2175 5 ea. 7505 ea. 800 2050 2450 2775 1650 1975 2250 5 ea. 800

4 ea. 1500 2080 2500 2820 1740 2080 2340 4 ea. 15006 ea. 600 2130 2520 2850 1710 2040 2310 6 ea. 6005 ea. 900 2175 2600 2925 1775 2125 2400 5 ea. 900

4 ea. 1750 2180 2600 2940 1820 2180 2460 4 ea. 17504 ea. 2000 2240 2660 3000 1880 2240 2520 4 ea. 20005 ea. 1000 2275 2725 3075 1875 2225 2500 5 ea. 10006 ea. 700 2310 2760 3120 1860 2250 2520 6 ea. 7006 ea. 750 2400 2850 3210 1920 2310 2610 6 ea. 7506 ea. 800 2460 2940 3330 1980 2370 2700 6 ea. 800

5 ea. 1250 2475 2950 3325 2025 2425 2725 5 ea. 12505 ea. 1500 2600 3125 3525 2175 2600 2925 5 ea. 15006 ea. 900 2610 3120 3510 2130 2550 2880 6 ea. 900

5 ea. 1750 2725 3250 3675 2275 2725 3075 5 ea. 17506 ea. 1000 2730 3270 3690 2250 2670 3000 6 ea. 10005 ea. 2000 2800 3325 3750 2350 2800 3150 5 ea. 20006 ea. 1250 2970 3540 3990 2430 2910 3270 6 ea. 12506 ea. 1500 3120 3750 4230 2610 3120 3510 6 ea. 15006 ea. 1750 3270 3900 4410 2730 3270 3690 6 ea. 17506 ea. 2000 3360 3990 4500 2820 3360 3780 6 ea. 2000

(140ºF Through 194ºF), Not More Than Three Current-Carrying Conductors in Raceway, Cable, or Earth (Directly Buried), Based on ambient Temperature of 30ºC (86ºF)



18 - - 14 - - - -16 - - 18 - - - -14* 20 20 25 - - - -12* 25 25 30 20 20 25 12*10* 30 35 40 25 30 35 10*8 40 50 55 30 40 45 86 55 65 75 40 50 60 64 70 85 95 55 65 75 43 85 100 110 65 75 85 32 95 115 130 75 90 100 21 110 130 150 85 100 115 1

1/0 125 150 170 100 120 135 1/02/0 145 175 195 115 135 150 2/03/0 165 200 225 130 155 175 3/04/0 195 230 260 150 180 205 4/0250 215 255 290 170 205 230 250300 240 285 320 190 230 255 300350 260 310 350 210 250 280 350400 280 335 380 225 270 305 400500 320 380 430 260 310 350 500600 355 420 475 285 340 385 600700 385 460 520 310 375 420 700750 400 475 535 320 385 435 750800 410 490 555 330 395 450 800900 435 520 585 355 425 480 900

1000 455 545 615 375 445 500 10001250 495 590 665 405 485 545 12501500 520 625 705 435 520 585 15001750 545 650 735 455 545 615 17502000 560 665 750 470 560 630 2000

CORRECTION FACTORS

For ambient temperatures other than 30ºC (86ºF), multiply the allowable ampacities shown above

(ºC) by the appropriate factor shown below (ºF)

21-25 1.08 1.05 1.04 1.08 1.05 1.04 70-7726-30 1.00 1.00 1.00 1.00 1.00 1.00 78-8631-35 0.91 0.94 0.96 0.91 0.94 0.96 87-9536-40 0.82 0.88 0.91 0.82 0.88 0.91 96-10441-45 0.71 0.82 0.87 0.71 0.82 0.87 105-11346-50 0.58 0.75 0.82 0.58 0.75 0.82 114-12251-55 0.41 0.67 0.76 0.41 0.67 0.76 123-13156-60 - 0.58 0.71 - 0.58 0.71 132-14061-70 - 0.33 0.58 - 0.33 0.58 141-15871-80 - - 0.41 - - 0.41 159-176

* See 240.4(D) 2002 National Electric Code Page 70-144


60º C (140º F)

75º C (167º F)

90º C (194º F)

60º C (140º F)

75º C (167º F)

90º C (194º F)

Types TW, UF


THWN, XHHW, USE, ZW



ZW-2Types TW,

UF


THWN, XHHW, USE


XHHW-2, ZW-2

Size AWG or kcmil

Size AWG or kcmil

Ambient Temp

Ambient Temp

02_voltage drop calculator

Documents

voltage drop

max voltage

3 voltage

16 allowable

size awg

maximum lenghts

parallel wires

zw copper