| [GMCnet] Ok to start engine when attached to shore power? [message #285235] |
Mon, 17 August 2015 13:26  |
glwgmc
Messages: 1014
Registered: June 2004
Karma:
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Senior Member |
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Hi Chris,
That is correct, the converter is normally wired to just the house bank. The alternator is wired to the center post of the diode battery isolator with the house battery bank connected to one post and the chassis bank to the other. That way the alternator will charge both battery banks, but the converter will only charge the house bank.
For those who wish to automatically charge both battery banks from either the alternator or the converter, the easy solution is to use a voltage controlled relay called a combiner. I prefer the Blue Sea brand myself. That combiner has one wire that will go to the house battery bank and another that will go to the chassis battery bank so no matter what the charging source - shore power, gen power or the alternator - both battery banks will get fully charged. You can simply use the terminals on the diode isolator to hook it up. Takes five to ten minutes and then you stop worrying about when/how your batteries get charged.
Over the years I have had two of the Yandina brand combiners fail in our two coaches but have never experienced a failure of the Blue Sea brand.
Jerry
Jerry & Sharon Work
Kerby, OR
glwork@mac.com
http://jerrywork.com
78 Royale with most everything done to modernize a GMC mechanically, full leather interior
77/94 Clasco bone stock and looks like it just left the Clasco facility
Both drive equally as well.
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Message: 2
Date: Mon, 17 Aug 2015 10:16:54 -0600
From: Chris Choffat
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Ok to start engine when attached to shore power?
Message-ID:
Content-Type: text/plain; charset="utf-8"
Me Three on starting with the PD9245. Never had a problem.
Now understand, that most coaches, unless the wiring is changed, have the converter on the house bank. The engine bank is not connected unless using
the boost.
--
-Chr$: Perpetual SmartAss
Scottsdale, AZ
77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman”
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Jerry & Sharon Work
78 Royale
Kerby, OR
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