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Thread: Generator relay
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Old 05-19-2019, 06:11 PM   #2
Senior Member
Brand: Thor Motor Coach
Model: 2013 ACE 30.1
State: Alberta
Posts: 971
THOR #2631
Welcome OLE25. Built in RV generators typically start using 12VDC from the Coach batteries. After starting the generator output is 120VAC which, when detected by the AC transfer switch, will cause the transfer switch to disconnect the 120VAC shore power feed (if connected) and then will connect the generator output through the transfer switch to the coach AC power panel. So if your gen started OK but you have no 120VAC output first check that the AC breaker located on the generator itself is on and has not tripped first. If it is on then you need to verify that all connections in your transfer switch are good and that the transfer switch is in fact operating. Once the gen starts typically the transfer switch has a 30 second time delay before switching to the generator output feed......if it detects 120VAC from the gen first.

Hope that helps get you started. As always be very careful with any DC or AC power investigations.
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