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Bad Breaker?

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DaveSchlarb

Member
Location
Colorado Springs
I found an outlet this morning that the hot had burned off of and welded the grounding screw into the back of the box, I suspect that the hot was nicked at some point. I was kind of surprised that the breaker did not trip, once I located it. Could the breaker be bad? It did seem to operate normally to turn it off and back on.
 
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letgomywago

Senior Member
Location
Washington state and Oregon coast
Occupation
residential electrician
DaveSchlarb said:
I found an outlet this morning that the hot had burned off of and welded the grounding screw into the back of the box, I suspect that the hot was nicked at some point. I was kind of surprised that the breaker did not trip, once I located it. Could the breaker be bad? It did seem to operate normally to turn it off and back on.
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If the ground sheared off at the next box from the arc it might not. Or if the cable run is long but then it wouldn't weld to the box
 
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jim dungar

Moderator
Staff member
Location
Wisconsin
Occupation
PE (Retired) - Power Systems
It sounds like you may have had a high resistance fault, that never drew enough current to trip the breaker.
 
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