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EL01
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Yep, looks like overheating to me.

DFCI breakers are designed to catch both, Ground Faults & Arc Faults from what I understand...not to mention overcurrent.
So...protect wire (overcurrent), protect people (ground fault), & protection against fires (arc fault)
 

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Industrial Electrician, Class A
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805 Posts
Discussion Starter · #5 ·
Forgot to mention it tripped on arc fault two nights one day apart,...
 

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Yep, looks like overheating to me.

DFCI breakers are designed to catch both, Ground Faults & Arc Faults from what I understand...not to mention overcurrent.
So...protect wire (overcurrent), protect people (ground fault), & protection against fires (arc fault)
Op's header said combination so I'm guessing no gfci protection. Unless it was either one of the breakers that has undeclared gfci in it
 
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