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Hello, thanks for requesting me.
Let start with the model and serial number of the genset, so I know which one you have.
When you say you have plugge the shore cord into a generator, are you referring to a different genset than the Generac?
When you are losing power, exactly what method are you using to deterine this, and where are yo9u checking at?
Remember, I can not see or hear what is going on, so I only know as much - or as little - as you tell me.
Low batteries will not cause low voltage output from the genset.
If you have good voltage coming in to the transfer switch on genset power, but nothing coming in to the coach, there is an issue with the transfer switch.
You need to monitor the input and output at the transfer switch while the unit is acting up.
If it is tripping breakers on both gensets, you need to have a running amp test done on the coach. You may have a bad appliance in the coach.
Yes. When on shore power, the TS is deactivated. But when on genset, it is activated. A problem in the TS usually shows up on genset power - not shore power
No, test the switch.
Monitor both the input and outputs while the unit is acting up.
I am not sure what you mean when you say "until the generator kicked in ". As long as the genset is running, it should be producing 120V.
if it is only producing 63V, this is the problem.
You still have not provided me with the model number of the genset, and the serial number you provided is not a valid serial number.