start with a 120/240 multiwire branch circuit.. e= i= r= p= e= i= r= p= e= i= r= p= we’ll need to...
TRANSCRIPT
![Page 1: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/1.jpg)
Start with a 120/240 multiwire branch circuit.
![Page 2: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/2.jpg)
E=I=R=P=
E=I=R=P=
E=I=R=P=
We’ll need to begin with some given values.
![Page 3: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/3.jpg)
We’ll need to begin with some given values.
E=120VI=R=P=
E=120VI=R=P=
E=240VI=R=P=
![Page 4: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/4.jpg)
Now lets add a load to each circuit.
E=120VI=R=P=
E=120VI=R=P=
E=240VI=R=P=
![Page 5: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/5.jpg)
Now lets add a load to each circuit.
E=120VI=R=P=100W
E=120VI=R=P=200W
E=240VI=R=P=
![Page 6: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/6.jpg)
Then calculate amps and resistance for each load.
E=120VI=R=P=100W
E=120VI=R=P=200W
E=240VI=R=P=
![Page 7: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/7.jpg)
Then calculate amps and resistance for each load.
E=120VI=R=P=100W
E=120VI=R=P=200W
E=240VI=R=P=
![Page 8: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/8.jpg)
Then calculate amps and resistance for each load.
E=120VI=P/ER=P=100W
E=120VI=R=P=200W
E=240VI=R=P=
![Page 9: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/9.jpg)
Then calculate amps and resistance for each load.
E=120VI=0.8333AR=P=100W
E=120VI=R=P=200W
E=240VI=R=P=
![Page 10: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/10.jpg)
Then calculate amps and resistance for each load.
E=120VI=0.8333AR=E²/PP=100W
E=120VI=R=P=200W
E=240VI=R=P=
![Page 11: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/11.jpg)
Then calculate amps and resistance for each load.
E=120VI=0.8333AR=144WP=100W
E=120VI=R=P=200W
E=240VI=R=P=
![Page 12: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/12.jpg)
Then calculate amps and resistance for each load.
E=120VI=0.8333AR=144WP=100W
E=120VI=P/ER=P=200W
E=240VI=R=P=
![Page 13: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/13.jpg)
Then calculate amps and resistance for each load.
E=120VI=0.8333AR=144WP=100W
E=120VI=1.6667AR=P=200W
E=240VI=R=P=
![Page 14: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/14.jpg)
Then calculate amps and resistance for each load.
E=120VI=0.8333AR=144WP=100W
E=120VI=1.6667AR=E²/PP=200W
E=240VI=R=P=
![Page 15: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/15.jpg)
Then calculate amps and resistance for each load.
E=120VI=0.8333AR=144WP=100W
E=120VI=1.6667AR=72WP=200W
E=240VI=R=P=
![Page 16: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/16.jpg)
With these values known, we can begin to understandwhat happens when the neutral is opened.
E=120VI=0.8333AR=144WP=100W
E=120VI=1.6667AR=72WP=200W
E=240VI=R=P=
![Page 17: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/17.jpg)
First, we’ll open the neutral conductor.
E=120VI=0.8333AR=144WP=100W
E=120VI=1.6667AR=72WP=200W
E=240VI=R=P=
![Page 18: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/18.jpg)
First, we’ll open the neutral conductor.
E=120VI=0.8333AR=144WP=100W
E=120VI=1.6667AR=72WP=200W
E=240VI=R=P=
![Page 19: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/19.jpg)
In doing so, we no longer have two circuits, but only one.The two loads are now in series.
E=120VI=0.8333AR=144WP=100W
E=120VI=1.6667AR=72WP=200W
E=240VI=R=P=
![Page 20: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/20.jpg)
So we will erase the figures we have calculated so far.
E=120VI=0.8333AR=144WP=100W
E=120VI=1.6667AR=72WP=200W
E=240VI=R=P=
![Page 21: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/21.jpg)
So we will erase the figures we have calculated so far.
E=I=0.8333AR=144WP=100W
E=120VI=1.6667AR=72WP=200W
E=240VI=R=P=
![Page 22: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/22.jpg)
So we will erase the figures we have calculated so far.
E=I=R=144WP=100W
E=120VI=1.6667AR=72WP=200W
E=240VI=R=P=
![Page 23: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/23.jpg)
So we will erase the figures we have calculated so far.Leave the values of R in place. Those will not change.
E=I=R=144WP=
E=120VI=1.6667AR=72WP=200W
E=240WI=R=P=
![Page 24: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/24.jpg)
So we will erase the figures we have calculated so far.Leave the values of R in place. Those will not change.
E=I=R=144WP=
E=I=1.6667AR=72WP=200W
E=240VI=R=P=
![Page 25: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/25.jpg)
So we will erase the figures we have calculated so far.Leave the values of R in place. Those will not change.
E=I=R=144WP=
E=I=R=72WP=200W
E=240VI=R=P=
![Page 26: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/26.jpg)
So we will erase the figures we have calculated so far.Leave the values of R in place. Those will not change.
E=I=R=144WP=
E=I=R=72WP=
E=240VI=R=P=
![Page 27: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/27.jpg)
Now add the values of the two loads’ resistances.
E=I=R=144WP=
E=I=R=72WP=
E=240VI=R=P=
![Page 28: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/28.jpg)
Now add the values of the two loads’ resistances.
E=I=R=144WP=
E=I=R=72WP=
E=240VI=R=144+72P=
![Page 29: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/29.jpg)
Now add the values of the two loads’ resistances.
E=I=R=144WP=
E=I=R=72WP=
E=240VI=R=216WP=
![Page 30: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/30.jpg)
Now calculate I and P for the entire circuit.
E=I=R=144WP=
E=I=R=72WP=
E=240VI=R=216WP=
![Page 31: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/31.jpg)
Now calculate I and P for the entire circuit.
E=I=R=144WP=
E=I=R=72WP=
E=240VI=E/RR=216WP=
![Page 32: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/32.jpg)
Now calculate I and P for the entire circuit.
E=I=R=144WP=
E=I=R=72WP=
E=240VI=1.1111AR=216WP=
![Page 33: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/33.jpg)
Now calculate I and P for the entire circuit.
E=I=R=144WP=
E=I=R=72WP=
E=240VI=1.1111AR=216WP=E²/R
![Page 34: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/34.jpg)
Now calculate I and P for the entire circuit.
E=I=R=144WP=
E=I=R=72WP=
E=240VI=1.1111AR=216WP=266.7W
![Page 35: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/35.jpg)
Since this is a series circuit, I is always the same.
E=I=R=144WP=
E=I=R=72WP=
E=240VI=1.1111AR=216WP=266.7W
![Page 36: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/36.jpg)
Since this is a series circuit, I is always the same.
E=I=1.1111AR=144WP=
E=I=R=72WP=
E=240VI=1.1111AR=216WP=266.7W
![Page 37: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/37.jpg)
Since this is a series circuit, I is always the same.
E=I=1.1111AR=144WP=
E=I=1.1111AR=72WP=
E=240VI=1.1111AR=216WP=266.7W
![Page 38: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/38.jpg)
Now calculate the voltage across each of the two loads.
E=I=1.1111AR=144WP=
E=I=1.1111AR=72WP=
E=240VI=1.1111AR=216WP=266.7W
![Page 39: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/39.jpg)
Now calculate the voltage across each of the two loads.
E=R*II=1.1111AR=144WP=
E=I=1.1111AR=72WP=
E=240VI=1.1111AR=216WP=266.7W
![Page 40: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/40.jpg)
Now calculate the voltage across each of the two loads.
E=160VI=1.1111AR=144WP=
E=I=1.1111AR=72WP=
E=240VI=1.1111AR=216WP=266.7W
![Page 41: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/41.jpg)
Now calculate the voltage across each of the two loads.
E=160VI=1.1111AR=144WP=
E=R*II=1.1111AR=72WP=
E=240VI=1.1111AR=216WP=266.7W
![Page 42: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/42.jpg)
Now calculate the voltage across each of the two loads.
E=160VI=1.1111AR=144WP=
E=80VI=1.1111AR=72WP=
E=240VI=1.1111AR=216WP=266.7W
![Page 43: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/43.jpg)
Now you can see what happens when you lose the neutralon a multiwire branch circuit.
E=160VI=1.1111AR=144WP=
E=80VI=1.1111AR=72WP=
E=240VI=1.1111AR=216WP=266.7W
![Page 44: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/44.jpg)
The more resistance, the higher the voltage....
E=160VI=1.1111AR=144WP=
E=80VI=1.1111AR=72WP=
E=240VI=1.1111AR=216WP=266.7W
![Page 45: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/45.jpg)
The less resistance, the lower the voltage.
E=160VI=1.1111AR=144WP=
E=80VI=1.1111AR=72WP=
E=240VI=1.1111AR=216WP=266.7W
![Page 46: Start with a 120/240 multiwire branch circuit.. E= I= R= P= E= I= R= P= E= I= R= P= We’ll need to begin with some given values](https://reader036.vdocuments.mx/reader036/viewer/2022062721/56649f205503460f94c386b2/html5/thumbnails/46.jpg)
This is Ohm’s Law in a most practical use, and the reasonArticle 300.13(B) exists.
E=160VI=1.1111AR=144WP=
E=80VI=1.1111AR=72WP=
E=240VI=1.1111AR=216WP=266.7W