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I am working on a fire truck with a headlight problem. It is equipped with auto resetting circuit breakers. The headlight and taillights are intermittently going off and on when the circuit breaker trips, then resets. They are new 20 amp circuit breakers. The amp draw is 9 amps on the taillight circuit and 11 amps on the headlight circuit with the high beams on. The circuit breakers are getting really hot (160 degrees) but not tripping. This amp draw does not seem excessive so why are the circuit breakers so hot?
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getting too hot means too much current is going through them. this happens when say you use too small of a power wire for an amplifier. Did you trace all of the wiring to check for breaks, shorts, oxidation. Try continuity test, resistance. Circuit breakers can wear out as they get old and keep tripping. contacts can get oxidized. hmm as i reread, are those circuit breakers high quality?
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