Fuse size for battery cut-off of new bus bar
I am about to buy Lithium batteries for my Forester and going to clean up the wiring mess on top of the batteries in the step compartment. The bus bar is rather larger with 4 posts and just fits in the open area at one end of the battery compartment. I will have 3 wires going to the bus bar from the converter/charger, Battery cut-off/ generator and the BIM battery isolation manager. The 4th wire will go from the buss bar to the positive post on the Lithium battery. There are 2 wires that are 2awg and 1 that is 4awg. Two of the wires have bussman fuses of 60 and 80 amps.
My new cable coming from the bus bar and going to the positive is 2 awg marine and can take up to 145amps. I want to add a Bussman resettable fuse in line so I can totally disconnect the Lithium batteries from any draw periodically when just sitting in my driveway. I was thinking of either a 100 amp or should I go with 150amp resettable fuse. Of course, I may have to go to a 1 awg wire with the 150amp.
2004 Winnebago Minnie 22e(went to a nice family Oct 3, 2015)
2016 Forester 2701DS (Aug 31, 2015)
2017 Camping 12 trips 38 nights
2018 Camping 10 trips 38 nights
2019 Camping 6 trips 19 nights
2020 Camping 0 trips Cancellations 3