To go farther we had a truck that kept burning up coffee pots.
These pots ran off an inverter.
The pots had circuit boards on them.
It took forever due to red tape to get these idiots to stop buying fancy coffee pots with computerized BS timers and so on.
When they or someone got a simple coffee pot with no fancy stuff the problem stopped.
It was me the "ignorant southern redneck" ((((someones not so nice description of me that was from California))) to solve it.
Worth