| Re: [GMCnet] [GMCMH-EFI] speaking of alternators... [message #322174 is a reply to message #322173] |
Tue, 15 August 2017 21:46   |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma:
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Senior Member |
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Solar is great when the weather is great. When the dark clouds stay around,
your not going to be singing the same tune.
We have installed 200 watt kits and found they are great only when weather
is good.
Always keep your generator as a stand by like the spare tire.
On Tue, Aug 15, 2017 at 5:41 PM, Matt Colie wrote:
> Ken,
>
> As usual, what you wrote is accurate - for the larger part.
> But,
> There is the case of the GMC 23s with the house bank in the front. Then,
> someone upsized the cables from the isolator and to ground as #4 AWG. So,
> when departing from a weekend of dry camping (with the OE reefer) the
> alternator belt will squeal and get a surface glaze that makes it even worse
> than it was.
>
> And I am thinking, "It is an old design 80 amp alternator, what is going
> on??"
>
> I got a new belt and reset the experiment at home. This time with a Bell
> current probe attached to a Fluke....
>
> Fire up!!
> What The ??
> Squeal !! 96 Amps out of the machine and all of 80 to the House Bank.?
> !Shut it Down.! Lets not do that again. That started the dual belt plan.
>
> We go back on shore power and guess what??
> Nothing, that's what. And that is with a PD 9145.
> The best it would do was 27 amps into a 60% house bank. (So much for the
> 45 rating.)
> Shortly after I got the coach (and fried the first of 2 4Ds), I replaced
> the buzz box with a PD9145w/wizard.
>
> It turned out that the culprit here was the #10SAE (~9.4AWG) from the back
> to the front that not only supplies all the house electric to the fuse
> panel in the back but is expected to do the reverse to recover the house
> bank from the buzzbox. At only 27 amps, the voltage drop between the PD9145
> and the bank was 0.8V. So available charge E was only 13.6.
>
> This story could go on a lot longer and there are actually many parts of
> this that have been condensed. I would love to have you think I got all of
> this figured out this fast.
>
> Matt
> --
> Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> Electronically Controlled Quiet Engine Cooling Fan
> OE Rear Drum Brakes with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
>
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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