Boat is my 2001 Vista 328. I need and want to replace the 3 output current charger (1 20 watt output and 2 of 5 watt outputs for the starting batteries). I'm going to a 3 output, 40 watts on each--charger is ProMariner, ProNauticP 1240P.
ProNautic says to run it direct to the batteries. Yet I want to continue to use the battery isolator, which I believe will mean continue to feed it up to the the Ships System circuit breaker and Port and Starboard engine breakers on the battery control panel in the cockpit.
However, it now has 12 ga. wire for the two 5 amp lines and 10 ga. wire for the 20 amp house and genset batteries (I have two grp. 31 AGM's in parallel for that).
Problem is it is recommended I go to 8 ga. wire for all three batteries, so I have to find the proper 8 ga. spade terminals to fit the breakers and snaking wire through nearly inacessible places. I may even have to reduce the wire at the terminals from 8 ga. to two strands of 12 ga. in parallel for a few inches to go to two smaller spade terminals.
Would there be any issues with this setup?
Or do I HAVE to run direct from the charger to the 3 different battery banks? And if so, won't that bypass the battery isolator?
Yes, I'll run 3 of 50 amp fuses within 8" of each battery as suggested, in addition to the main breaker(s)
Thoughts everyone?
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