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When wiring a box for a three-prong 6-30 240V plug where does the bare ground go?

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2009-08-16 18:52:08
2009-08-16 18:52:08

=== === Tie the bare ground onto the ground screw in the back of the box then tie green wire from outlet to bare ground with a "wire nut", also known as a "marrette", or with an equivalent kind of secure electrical connector.

=== === <><><> If you must go with a 3 prong outlet, ground the box. I would recommend a 4 prong outlet as it meets modern code and is safer.

<><><>

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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Bare wires!?!?!?! For 240V you need 3 wires plus ground. Red and Black are hot, white is neutral. Don't mess with 240V if you have no idea what you're doing. It's not safe at all.

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4 wire household wiring is black, red, (hot wires) white (neutral) and bare or green (ground wire). You say 3 wires. Is it 120v or 240v. If its 240v which is more common just use the two hots and the ground and cap off the neutral wire.

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In industrial wiring 'three phase' green or bare copper is the norm for a ground. In home wiring 220/110 single phase, bare copper is the ground

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Depends on what you are wiring. Green is a common color used for ground. Sometimes it is just a bare copper wire.


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