Technical FAQs

Ask a Question

Must a common trip breaker be used for all multiwire branch circuits to shut off all of the phase conductors?

Issue:
Can multiwire branch circuits be protected by single pole breakers with handle ties that are not common trip?

Product Line:
Miniature Circuit Breakers

Resolution:
Multiwire branch circuits that supply switches, receptacles, or equipment on the same yoke must be provided with a means to disconnect simultaneously all ungrounded conductors that supply those devices or equipment at the point where the branch circuit originates [210.4(B) and 210.7(B)].
Was this helpful?
What can we do to improve the information ?