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How do you wire the three 240V wires coming out of the wall to a 4-wire stove plug?


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2015-07-15 18:50:08
2015-07-15 18:50:08

for USA, Canada and countries running a 60 Hz supply service.

The 4 wires that are needed for this stove are, L1 (120 phase 1) L2 (120 phase 2), neutral, and ground. If you only have three wires then you are missing one of these wires. I would recommend running new wire from your electrical panel to the stove. I would NOT just leave the ground wire off or connect the neutral and ground together. There is a reason that there are 4 wires, and you should keep it that way.

Another answer

Do not tie the neutral and ground in the outlet! Run new wire! Depending on how much current is flowing through the neutral, there is a potential (pun not intended) for a voltage to exist between the neutral and ground. If you use the neutral as a ground, this means a shock hazard. Get it wired properly. Be safe.

Rationalizing tying the neutral to the hot "because they are tied at the breaker box anyways" is dangerous because it neglects the fact that the wire has resistance. The resistance in the wire causes the potential to ground, which is always 0V at the breaker box.

What if

The neutral and ground are already connected on the back of the appliance? Could I then replace the 4 wire cord with a 3 wire? If you are upgrading to a newer appliance the electrical code allows you to continue to use your exsisting 3 wire supply.You would connect the ground and neutral together as in the old appliance.The neutal currents in cooking appliances( 240 volt) are very small and should not cause you any problems.


The neutral / ground tie mentioned above is for old 3 wire outlets. If you are lucky enough to have a new 4 wire outlet, break that bond. Your new cord will have the separate neutral and ground so that bond is not needed.

Again, if you are wiring a new outlet you need all 4 wires for a 4 wire plug. Pull new wire if you can, it is safer. If you can't, use the older 3 wire plug. The 3 wire plug does not meet code for new work, but is allowed for old work. Do not under any circumstances connect ground and neutral at the outlet That is dangerous and illegal. Do it right or don't do it at all.


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.





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