AC 20amp breaker trips mid day
Just came from Vegas 103 deg with no AC problems. At our new location which is also about 103 deg, the ac compressor would cycle and the fan would stay on with the thermostat on auto. Now it trips th...
Forum Discussion
Haycamper wrote:
Just came from Vegas 103 deg with no AC problems. At our new location which is also about 103 deg, the ac compressor would cycle and the fan would stay on with the thermostat on auto. Now it trips the breaker. Last night when it was 90 deg I measured the voltage drop and it went from 120 AC off to 107 with AC on. Before I measured the voltage drop it was running very quiet/slow. Today it's only 80 deg and was able to borrow an amp meter at its drawing 15.1 amps. I can't figure out if it's the campsight voltage or my ac. Any help?
If it is on a 30A/20A "duplex" breaker like this..
MOVE the A/C to a different breaker from the 30A/20A or change the 30/20 duplex to half size breakers if the breaker panel permits it.
Most breakers are thermal trip, drawing heavy loads for long periods of time will heat up the breaker, since two breakers are in one package the heat eventually builds and the lower amperage breaker can potentially trip easier..
The 30/20 is particularly vulnerable since it gets hit twice, one from the A/C load (20A side) and second from the A/C and all other items since it is used as the "master" breaker to protect the shore cord (30A side)..
