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Electrical Question From Donald About Circuit Breaker


By Dave Rongey - Summary:

Question: What is the internal connection of a 220v breaker? Does it trip only if current over its rating is detected phase to phase? Also what is the internal connection of a 3 phase breaker?

Electrical Question about: Circuit Breaker

Received from Donald a Handyman in WI

Question: What is the internal connection of a 220v breaker? Does it trip only if current over its rating is detected phase to phase? Also what is the internal connection of a 3 phase breaker? A 20A 3 phase breaker trips if over 20A is detected between any 2 phases? Or do both of them detect over current of individual phases to ground?

Dave’s Reply:
Thanks for your electrical question.

The Following links will assist you with your electrical question:
For more information:
Home Electrical Wiring Resources

This link is helpful as a Handyman
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