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Old 12-04-2010
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ANL fuse size at battery

Winter is near and I've been looking over my wiring etc to get familiar with the systems. I have 2 group 31 AGM batteries(105 amp/hrs) as the house bank, these are connected in parallel with 2 AWG tinned copper. 2 AWG is also used to connect this bank to my battery switch and house panel aprox 10' away. What concerns me is the ANL fuse within 7" from the battery is 250 amps. Since the blow point of the ANL fuse so high at 400 amps and 2AWG is rated for 210 amps outside an engine space, is the fuse to big? How do I calculate the size needed?
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Steve
PSC 31 #125
Ryoko
Oriental, NC
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