Suspect a bad breaker
Hello,
As a power systems electrical engineer, I sometimes run across breakers that trip at current levels that are much lower then their labeled rating. I would do the two following tasks to assure that the electrical distribution system was working properly.
1. check the AC system voltage at the appliance. The voltage should not be less then 120v.
a. Check your generator output at the generator. If the voltage there is higher then what is measured at the appliance outlets then consider checking terminal tightness of all wiring connections located within your 120v breaker/fuse panel.
b. If plugged into a "hotel" service then check the voltage at the "hotel" outlet and assure that the voltage is not low. If it is low, then there may be several problems that need to be investigated and you'll need assistance from a good electrician.
2. If all the connections are tight, then try turning the breaker for ther appliance circuit off, then on several times (10 or more). then is the only maintenance that can be performed with a breaker. If you still have problems then plan on having the breaker replaced.
3. It is important to keep in mind that low AC voltage will result in higher ampere loads. Sometime when an electrical circuit is feeding a large load, the lower voltage will cause the load amperes to increase beyond the breaker rating resulting in a trip.
4. You should have a voltmeter that can read both AC and DC power, and check continuity. There are times when nothing else will do.
Hope this helps....
PEHetzer
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