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| Engine and Charging Sys Wiring Diagrams |
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chollyjohn
Member
Username: chollyjohn
Post Number: 70
Registered: 05-2008
| | Posted on Saturday, July 11, 2009 - 11:19 am: | 
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I am looking for general information, a manual, a service book, a DIY book, etc. to get an overview of how to maintain, replace or modify an electrical system (engine and charging only) for a Powerboat. Hopefully, too, one that will engauge information for twin engine system. Please voice any references, books you may know about as well as internet sites and free diagram sites. Your help will be appreciated. |
makomark
Advanced Member
Username: makomark
Post Number: 822
Registered: 09-2008
| | Posted on Saturday, July 11, 2009 - 04:00 pm: |
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Cholly-
for the 12V side, the Nigel Calder (sp?) has several and Charlie Wing has at least one that are cited continually. I've never read either but do have some other topics authored by Wing.
Whatever you do, try to use the AB&YC color standards, where applicable. Also, document not only the schematic but also an "as-built" so you know where any tie blocks, splices, etc, are physically located...it will save somebody days in the future.
Finally, as I'm sure you are aware, use premium tinned wire, with fine strands - doesn't have to have a 'marine' sticker on the box, just good stuff inside. Adhesive lined shrink tube, a can of liquid tape, and some crimping tools and ty-wraps should get you started. |
chollyjohn
Member
Username: chollyjohn
Post Number: 72
Registered: 05-2008
| | Posted on Monday, July 13, 2009 - 06:58 pm: |
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Thankx mako...I have seen several publictions but all I wanted was a simple schematic of a twin engine set up with battery charger and a 4 battery system. Specifically, I have a 3 bank charger, 30A. One bank to port engine batt, one bank to Strbrd Batt and third bank to (2) house batteries in paralell. It is connted to one battery. I was wondering if makes better sense to use that Bank lead to an isolator and feed both batteies that way instead. Another option would be to use battery sensing charger switch vs the isolator. Comments welcome. |
makomark
Advanced Member
Username: makomark
Post Number: 858
Registered: 09-2008
| | Posted on Monday, July 13, 2009 - 10:15 pm: |
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if the house batteries are of the same type and have enough capacity to where you leave them paralleled, I'd charge them in parallel. If you 'switch them', as needed, or prefer to consume their capacity one at a time, I'd put a charging relay in to 'bridge' them when the charger is running.
the isolator will work but suffers the 0.6v drop due to the diode it places in series. This will keep the battery from reaching full charge. |
chollyjohn
Member
Username: chollyjohn
Post Number: 75
Registered: 05-2008
| | Posted on Tuesday, July 14, 2009 - 09:28 am: |
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Hey mako: That is the most useful information I have had so far concerning this charge situation. I like the relay idea over the isolator which gives me the forth battery as backup to the house or for starting. Seldom would be needed for starting since I have twin engine and emergency start solenoid. Not to mention I havwe two more deep cells for the trim tab trolling motors. Total six batts on board.. Thankx again very much. |
makomark
Advanced Member
Username: makomark
Post Number: 866
Registered: 09-2008
| | Posted on Tuesday, July 14, 2009 - 02:50 pm: |
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cholly:
didn't know you carried that much "ballast" onboard. You have much more flexibility than my rig.
I came across the blue seas' library link and figured even though you have a good handle on your next project, somebody coming across this may need more input. So here's the next stop before you make that posting:
http://bluesea.com/resources/2
There's also good material in the References section, too. |
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