Battery Disconnect Switch
I want to install a battery disconnect switch on my 04 Revolution but want to make sure it can handle the amperage generated by the 4 house batteries. I have searched the board and found information a...
Forum Discussion
What loads are you switching? You need to size the disconnect switch for the current the load consumes, not for the current the battery could theoretically produce. Your battery can producing a short circuit current that's a lot higher than should ever be possibly required of it. A lead-acid battery is capable of doing things like melt wrenches that are accidentally dropped across the terminals.
If you're switching the main input to your 12V distribution panel (only), you'll never be switching more than the main fuse there or, if it has no main fuse(s), the sum of the branch circuit fuses. Typically this would be on the order of 100A or so, but it could vary depending on the RV and what all devices it's equipped with and how its wired.
If you have a nontrivial inverter you're running through the disconnect switch, the current rating needs to be a lot higher.
If you're switching the main input to your 12V distribution panel (only), you'll never be switching more than the main fuse there or, if it has no main fuse(s), the sum of the branch circuit fuses. Typically this would be on the order of 100A or so, but it could vary depending on the RV and what all devices it's equipped with and how its wired.
If you have a nontrivial inverter you're running through the disconnect switch, the current rating needs to be a lot higher.
