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Forum: Electrical: Batteries, Generators & Solar

19-07-2013, 09:41

Replies: 61

Alternator Positive Wire Sizing

Views: 12,620

Posted By Maine Sail

Re: Alternator Positive Wire Sizing

The effect it has is to full filed the alt. It is not regulating voltage at this point.. If you disconnect the field wire the alt shuts down.

If you cut the volt sense wire the reg still...

Forum: Electrical: Batteries, Generators & Solar

18-07-2013, 19:07

Replies: 61

Alternator Positive Wire Sizing

Views: 12,620

Posted By Maine Sail

Re: Alternator Positive Wire Sizing

Ah that clears it up!! I tend to like the 1/2/BOTH as a use/supply side switch, lots of redundancy, but much prefer charge sources direct wired to the bank with proper OCP..

If I am starting from...

Forum: Electrical: Batteries, Generators & Solar

18-07-2013, 11:39

Replies: 61

Alternator Positive Wire Sizing

Views: 12,620

Posted By Maine Sail

Re: Alternator Positive Wire Sizing

Dave,

Really? If you have a 1/2/BOTH, as the vast majority of boats do, and sent a sense wire to the start battery at 12.6V- 12.72V (full) and you turn on the regulator which is trying to get to...

Forum: Electrical: Batteries, Generators & Solar

18-07-2013, 08:02

Replies: 61

Alternator Positive Wire Sizing

Views: 12,620

Posted By Maine Sail

Re: Alternator Positive Wire Sizing

They are used in boats and some factory alts do have this capability. Many factory alts however don't have this capability without physically digging into the alt. Bank sensing can't be used in all...

Forum: Electrical: Batteries, Generators & Solar

18-07-2013, 05:27

Replies: 61

Alternator Positive Wire Sizing

Views: 12,620

Posted By Maine Sail

Re: Alternator Positive Wire Sizing

On a sailboat if you are only pushing to 13.4V or so, which means drastically longer & slower charging times, you will eventually wind up at "chronic under charging". This is especially true with the...

Forum: Electrical: Batteries, Generators & Solar

18-07-2013, 01:29

Replies: 61

Alternator Positive Wire Sizing

Views: 12,620

Posted By Maine Sail

Re: Alternator Positive Wire Sizing

When charging batteries hitting the proper target voltage is critical. With "self sensed" alternators especially, this means large gauge wire to attain the lowest possible voltage drop.. It is all...

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