0

So I’m trying to add a new circuit breaker for a plug because there are multiple outlets on this circuit and when everything is being used the breaker trips

The outlet is a 125/250v 4 wire 3 pole 3 phase grounded outlet that powers up a meat cutting saw.

My question is that do I need 3 breakers to power up this plug or would I be fine with just 2 breakers. Because from what I understand I can get 210 volts phase to phase so I don’t see why I’d need all 4 wires. I think that I’d only need 2 hots and a ground and I should be fine. That would mean that I’d only occupy 3 out of the 4 screws on the plug.

Thank you

  • Are you rewiring this onto a dedicated circuit, or...? – ThreePhaseEel Sep 26 '18 at 1:32
  • Shoot us a photo of the nameplate on the motor. – Harper - Reinstate Monica Sep 26 '18 at 8:25
  • What flavor of 3-phase? That term alone is not defining.. – Tyson Sep 26 '18 at 10:44
1

It's generally a big problem when a three phase motor loses a phase, the remaining phases will be overloaded trying to make up the slack. There are even monitors / relays to prevent running a motor with a phase lost. So you definitely wouldn't want to try to run the motor with a missing phase.

|improve this answer|||||

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.