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post #22 of Old 09-14-2011
josrulz
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OK one more question, but it's still related for the most part. Hope you don't mind!

My alternator is a 90 amp Balmar with ARS-5 external regulator. I don't know what gauge the charging wire is currently. Regardless, what should it be for a 5 foot run to the house bank?

According to the Blue Sea chart that Maine Sail posted, that looks like 4 AWG. But when I use the circuit wizard on the Blue Sea site, it comes out as 6 AWG, even up to 100 amps. Of course it will usually be a lot lower than 90 amps from my alternator.

So how do I size the alternator wire? I know the fuse will be MRBF and I'll size it according to the alternator wire size.

Thanks for the additional help!
-J

1984 Sabre 34 Mk I
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