Electricians

491 readers

1 users here now

founded 2 years ago

MODERATORS

puppymartini

Open Neutral? (self.electricians)

submitted 1 year ago by floppingfish to c/electricians

5 comments fedilink hide all child comments

I'm a helper and worked with an old time electrician and he did something a year ago that still troubles me. We wired a 50 amp 220 volt circuit for some heat pumps. he brought the wires into the panel, hooked them to ground and the breaker and left the white wire capped with a wire nut. He told me it will work fine and forget about it. Did we leave somebody with an open neutral? Is the ground wire the neutral now? Should I try and go back and fix this?

you are viewing a single comment's thread
view the rest of the comments

[–] pbbananaman 4 points 1 year ago (2 children)

Maybe I’m missing something but 220 doesn’t need a neutral, just 2 hots. Maybe if you were wiring up a NEMA outlet with a neutral connection that would be bad, but a direct wire to an appliance sounds fine?

[–] dual_sport_dork 3 points 1 year ago* (last edited 1 year ago)

This is correct. Direct connection to a 220/240 appliance takes two hots -- one each from opposite ends of the phase -- and a ground. No neutral is required. (You may even find a sticker inside the wiring panel to the effect of, "Do not connect any neutral wire." The mini split I just installed had one, for instance.)

Some people treat ground and neutral as interchangeable since in residential applications with only a single breaker panel they are often bonded at the panel anyhow. While you can get away with this in a variety of scenarios, doing so is not technically correct.