Electrical Question From Donald About Circuit Breaker
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?
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This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester, [amazon.com], I use for the detection of Standard Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.
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