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On three wire extension cord which color green white or black is the ground wire?
Wiki User
∙ 14y ago
It will work with any of them -- however, it is always best to follow the standard, to avoid confusion and that unpleasant zapping sensation in your hands -- not the mention the possibility of fire!
The green wire is the Ground wire.
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Answer for USA, Canada and countries running a 60 Hz power supply service. Extension cord construction If you are constructing an extension cord make sure that the ends go on the right end of the cable. Match the wire end when looking at it, to the proper pin configuration of the plug. Looking at the plug from the blade side directly on you should see a larger blade (silver) on the right, smaller (brass) blade on the left and a U shaped ground blade on the bottom. The white wire connects under the right (silver) coloured screw, the black wire connects under the left (brass) coloured screw and the green wire under the green ground screw. Looking at the end of the cable it should be matched to this configuration. If it doesn't look at the other end of the cable. No wires should cross when connecting to the blades on the plug, if they do you have the wrong end of the cable.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoIf this is a 120 volt extension cord:
The black wire should be the hot wire. But if the receptacle that it plugs into is wired incorrectly then the white wire could be hot instead.
Most receptacles have brass terminals/screws on one side and chrome or silver colored terminals/screws on the other side.
The hot wire that feeds the receptacle should always be attached to the brass colored terminal side.
The common/neutral wire that feeds the receptacle should be attached to the chrome or silver colored terminal side.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
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