Single phase and Three phase complete explanation in Urdu/Hindi | Electric Transmission and Distribution

#singlephase #threephase #colorcoding #eng

in electrical wiring we have two systems one is single phase and second is three phase basically phase is the wire through electric current are flow and neutral is a reverse path of current.

Wiring Color Code:
We have used Red for Live or Phase , Black for Neutral and Green for Earth Wire. You may use the specific area codes i.e. IEC – International Electrotechnical Commission (UK, EU etc) or NEC (National Electrical Code [US & Canada] where;

NEC:

Single Phase 120V AC:

Black = Phase or Line, White = Neutral and Green/Yellow = Earth Conductor

Three Phase 208 AC:

Black = Phase 1 or Line1, Red= Line 2, Blue= Line 3, White / Gray = Neutral and Green/Yellow = Earth Conductor

IEC:

Single Phase 230V AC:

Brown= Phase or Line, Blue= Neutral and Green = Earth Conductor

Three Phase 208 AC:

Grey= Phase 1 or Line1, Black= Line 2, Brown= Line 3, Blue = Neutral and Green= Earth Conductor

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