Thermal Breaker
A (newbe) going full time guest tripped her 30a power in her '91 Itasca A coach. I looked at all I knew to help reset power, without luck. Our not yet back from Az. mobile tech. thought it was the t...
Forum Discussion
Here is basic information on circuit breakers.
"Thermal magnetic circuit breakers, which are the type found in most distribution boards, incorporate both techniques with the electromagnet responding instantaneously to large surges in current (short circuits) and the bimetallic strip responding to less extreme but longer-term over-current conditions. The thermal portion of the circuit breaker provides an "inverse time" response feature, which trips the circuit breaker sooner for larger overcurrents but allows smaller overloads to persist for a longer time. On very large over-currents during a short-circuit, the magnetic element trips the circuit breaker with no intentional additional delay"
It is possible that the circuit breaker may not want to reset as age a numerous trips can weaken the internal springs. Thus needs to be replaced.
"Thermal magnetic circuit breakers, which are the type found in most distribution boards, incorporate both techniques with the electromagnet responding instantaneously to large surges in current (short circuits) and the bimetallic strip responding to less extreme but longer-term over-current conditions. The thermal portion of the circuit breaker provides an "inverse time" response feature, which trips the circuit breaker sooner for larger overcurrents but allows smaller overloads to persist for a longer time. On very large over-currents during a short-circuit, the magnetic element trips the circuit breaker with no intentional additional delay"
It is possible that the circuit breaker may not want to reset as age a numerous trips can weaken the internal springs. Thus needs to be replaced.
