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Old 05-08-2021, 03:53 AM   #1
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Trailer battery isolator

I noticed my Type 1 style battery isolator fell off its mount and is in rough shape. I wish to replace it. My 7 pin connector is receiving 12v via a direct line from the van's battery with an in-line 20 amp fuse.

The line is only used for battery charging. The only powered device in the trailer is the CO detector by default.

Question: Should the battery isolator be rated at 20 amps as well?

Thank you.
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Old 05-09-2021, 08:57 PM   #2
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20A or larger for the isolator.
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Old 05-09-2021, 09:31 PM   #3
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What gauge wire did you use from the battery to the 7 pin connector in the TV. What size wire on the trailer from 7 pin connector to the battery. you dont want you fuse amp rating to exceed the wire capability.
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