Electrical plug cheater box
Coach is stored at my business (warehouse) and plugged in 7/24 to a 20 amp receptacle. I would like to pre-cool before hitting the road for a day or two. I can reach 2 different (not on same circuit) ...
Forum Discussion
wolfe10 wrote:rgatijnet1 wrote:
Trying to wire in two 20 amp circuits to your 50 amp input may confuse your EMS board and shut things down.
No first hand experience with EMS systems, but wouldn't the following be true:
If the two hots are on the same "Phase" (i.e. from same side of warehouse breaker box) the EMS would assume 30 amp service.
Correct.
If the two hots are on different "Phases" (i.e. from opposite sides of the warehouse breaker box) the EMS would assume 50 amp service.
Correct.
Can't see a problem with running loads the OP is discussing: one A/C plus probably the refrigerator (though that could be on propane) and the charger which should be pulling minimal amps since it has been plugged in long enough to have the batteries fully charged.
Very easy to start running heavier loads which may cause issues.
Again, IF the refrigerator and/or converter or other loads to be run are on the "other hot" (not same one running the A/C) this cheater makes sense (assuming his warehouse outlets are not GFI). If ducted A/C that would merely mean verifying which A/C and other circuits run from which hot.
