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Old 08-03-2022, 02:36 AM   #8
16ACE27
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Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,116
THOR #7035
Quote:
Originally Posted by racefan View Post
Just trying to understand here So when I have the use/store switch in the use position and running off of house batteries the 12 volt stuff works (lights, water pump, etc.) When I plug into shore power, I hear the muffled clunk and the 120v stuff works (microwave, a/c etc.) What am I hearing clunk that powers up the 120v stuff?
People are assuming you have a Surge Protector/EMS but you probably don't unless it was an aftermarket add-on.

You have the USE/STORE switch operation down as well as the Shore Power (SP) supplied loads.

There is an Automatic Transfer Switch (ATS)( that automatically switches the AC input power from the SP cord to the generator when the generator is running. These ATSs normally default to SP and have a time delay to switch to the generator once the generator is running and putting out power. Any delay of power from plugging in to SP is NOT NORMAL but if the ATS is incorrectly wired it may be the source of your delay and what you hear clunking.
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