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Green or bare wire is used for ground conductors in US, Canada and countries which use similar wiring codes for 60Hz power supplies.

<><><> Green/yellow striped wire is used for ground conductors in Europe and other world areas which use similar wiring codes for 50Hz power supplies. IF YOU ARE NOT ALREADY SURE YOU CAN DO AN ELECTRICAL JOB

SAFELY AND COMPETENTLY

REFER THE WORK TO QUALIFIED PROFESSIONALS.

If you do this work yourself, always turn off the power

at the breaker box/fuse panel BEFORE you attempt to do any work AND

always use an electrician's test meter having metal-tipped probes

(not a simple proximity voltage indicator)

to insure the circuit is, in fact, de-energized.

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16y ago

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What is the color of wire used in an isolated ground system?

All ground wires are green or green yellow marker.


Why is there 3 wire system to 2 wire system?

I assume you mean hot, neutral and ground. The answer is simple...the advantage is life or death in a home wiring situation. The only true job of electricity is to seek ground and it will find it through the path of least resistance. If the neutral wire of a 110v 2 wire system becomes open, the only path to ground may be your body. If that same wire opens on a 3 wire grounding system, there is a backup path through the ground wire creating a low resistance to ground. Safety issue.


How do you connect grounding of i and c?

Grounding of I and C? to ground something is to have a wire that goes to a grounded connection the bare wire in a normal wire set.


In a 4 wire delta connected system what does the orange wire mean?

High or "wild" leg phase to ground.


Will a ground fault interrupter work at any outlet with only 2 wires?

Yes. GFCI receptacles do not rely on a ground conductor to work. They sense any difference between current flowing in the hot wire and current returning in the neutral wire. Under normal circumstances, these two currents will be exactly the same. If there is a difference, then some of the current is flowing from the hot to somewhere else, possibly through a person to ground. This causes the GFCI to trip. The National Electric code even permits an old 2-wire receptacle with no ground wire to be replaced with a GFCI 3-prong receptacle. No ground wire is used, and the GFCI must be labeled "No Equipment Ground". See NEC Article 406.3(D)(3)(b) and (c). This is the only legal way to install a 3-prong receptacle in place of a 2-prong without running a new ground wire.