wires & cables
Post on 23-Feb-2016
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Wires & Cables
Energy & EnvironmentWires & Cables
1Conductors----High Resistance-------------Low ResistanceA conductor has many free electrons so is good at transferring electrical currentGood ConductorBad ConductorConductance is the opposite of resistanceIt is measured in Mhos (ohm backwards)
2Different types of conductorsMaterial UsedCopper
High conductivityEasily solderedHeavier & more expensive than aluminumCopper used in house wiring
1mm2, 1.5mm24mm2 , 6mm2Aluminum
60% conductivity of copperCheap & lighter than copperLowest conductivityHeavier than aluminumGalvanized Iron (GI)
Used in overhead lines
3Different types of conductorsRespective of their propertyGood Conductors
Bad Conductors
Medium resistanceUsed for converting electrical energy into heat, light & soundPVC, glassHigh resistanceNon ConductorsCarry current
Low resistanceCopper & AluminumTungsten & NichromeInsulators
Wires & cables use conductors & non conductors to their advantage
4Different types of conductorsPhysical AppearanceSolid Conductor
Used in cables.e.g. copper, aluminum, steelStranded Conductor
Flexible
1.13 to 3.73 mm diameter1, 7, 19, 37 stands
Multi stranded Conductor
0.2 or 0.3 mm diameter14, 22, 24,84 strands Flexible Conductor14, 23, 40 strands
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