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jjrbus's avatar
jjrbus
Explorer
Feb 10, 2023

Battery isolator charge vehicle battery on shore power

I have a new to me 02 Roadtrek on a Chevy chassis. There is what looks to be a newer 4 post isolator, I see no name brand or specs on it. I have been RV'ing long time and never had an isolato...
pianotuna's avatar
pianotuna
Nomad III
Feb 12, 2023
wolfe10,

The wire size depends on what is wanted,

I added a voltage sensitive relay @13.5 volts (suggested by BFL13) from the house bank to the generator battery and deliberately used #20 wire to limit the amperage. It trickle charges the SiO2 that I used for the generator while in storage, and will power the remote electric start from Pinella's when the RV is in use. Since the battery is never "deep discharged" there is no risk of the wire becoming a fuse.

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