| Re: [GMCnet] [GMCMH-EFI] speaking of alternators... [message #322160 is a reply to message #322158] |
Tue, 15 August 2017 16:39   |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
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In theory that is true but...
A 100 amp alternator will seldom put out 100 amps. If will do it when it is cold and if there is enough of a load but cold batteries do not take much of a load until they warm up. Even if it did put out 100, all 100 amps would have to go to one side. (either engine or house but not both. I have had a 100 amp alternator for over 12 years with an 80 amp isolator. I bought a 120 amp isolator to replace the 80 but I never had the old one go bad. It has been so long ago that I do not remember where I put the replacement. If it worries you replace it or keep a new one as a spare.
The biggest advantage of a 100 amp alternator is it will put out more current at an idle or at lower speeds.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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