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Old 08-07-2020, 22:34   #1
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Help with electrical wiring and upgrades

Greetings, I am hoping for some help with my electrical wiring project. I am attaching my rough makeup and I feel like I may be doing things wrong. I know I don't have any specs on the equipment and materials, but I am trying to see if this would work or can be improved upon.

I just bought this boat and I am new to sailing so go easy on me guys. Please see attached word document.
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File Type: doc My Wiring Diagram2.doc (177.5 KB, 43 views)
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Old 09-07-2020, 13:29   #2
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Re: Help with electrical wiring and upgrades

Welcome to the forum.

Thanks for the initial attempt for a wiring diagram.

Some feedback:

Follow ABYC. This has lots of important details, like securing wiring, for example. All those details are important.

The system appears to have two banks w/ a three bank charger. Two batteries in parallel are a single bank.

This doesn't show fusing near the battery, as required by ABYC.

Items attached to the rocker switch panel don't appear to have circuit protection.

A better wiring diagram, including marine color code and wire gauge would be useful before jumping into this huge project. Extensive wiring experience is also required. The correct crimping tools, liked linked in this reply are essential.

My preference is to label both ends of every conductor, matching the wiring diagram for later utility.
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Old 09-07-2020, 17:51   #3
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Re: Help with electrical wiring and upgrades

A boat wiring book will provide useful information for this project.
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Old 10-07-2020, 04:56   #4
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Re: Help with electrical wiring and upgrades

Suggest reading Nigel Calder or similar.
It may seem like a daunting project but once you get your head around the principles it’s straightforward but time and $ consuming. Worth doing right so take your time.
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Old 10-07-2020, 06:37   #5
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Re: Help with electrical wiring and upgrades

Hi, nice drawing, fun to do in Word, too.

I think I understand what you're trying to do, but you seem to be reinventing the wheel. Many folks have come up with house/start-reserve bank wiring diagrams, so that YOU don't have to do so all on your own.

For example, using a three gang shorepower charger to charge individual banks or batteries is not necessary, and a combiner for dual banks is a preferred way to go.

The dual circuit switch is not preferred for sailboats.

These links come from the Electrical Systems 101 topic I developed over the years (https://c34.org/bbs/index.php/topic,5977.0.html).

Specifically these:

OEM 1-2-B Switch Wiring History http://c34.org/bbs/index.php/topic,4....html#msg30101

1-2-B Considerations (New 2020 - Rodd finally got around to diagramming what I had done in the above link in 2009 )
https://marinehowto.com/1-2-both-bat...onsiderations/

Basic Battery Wiring Diagrams This is a very good basic primer for boat system wiring: http://c34.org/bbs/index.php/topic,6604.0.html

This is another very good basic primer for boat system wiring: The 1-2-B Switch by Maine Sail (brings together a lot of what this subject is all about)
http://forums.catalina.sailboatowner...d.php?t=137615

This is a newer primer for boat system wiring design with a thorough digram: Building a Good Foundation (October 2016)
http://forums.sailboatowners.com/ind.../#post-1332240

The Short Version of the 1-2-B Switch Stuff: http://c34.org/bbs/index.php/topic,5....html#msg38552 This is a link to the Electrical Systems 101 Topic, reply #2

What are ACRs, Combiners & Echo Chargers? (by Maine Sail) [scroll to the top]
http://forums.catalina.sailboatowner...d.php?p=742417 and http://c34.org/bbs/index.php/topic,9....html#msg70131

Making Sense of Automatic Charging Relays (2019)
https://marinehowto.com/automatic-charging-relays/


************************

This discusses the dual circuit switch:

AGM Battery Issues and the Blue Seas Dual Circuit Switch (from Maine Sail) "DARN AGM Batteries"
https://forums.sailboatowners.com/in...teries.133773/


************************


Good luck, happy wiring.


Stu
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Old 10-07-2020, 06:42   #6
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Re: Help with electrical wiring and upgrades

Thanks everyone for replies. I will check out those books. I will be including fuses, breakers and correct wire gauge as I determine what my loads and distances will be as the project moves forward. All marine quality materials, ignition protected etc. I will add those once I determine if this works, then I will slip in inline ANL fuses, breakers to protect the wire and

This is the very early stage of R&D to make a plan on achieving what I want. Ultimately, what changes from original owner's setup is the addition of the battery combiner, alternator charger, inboard 3 bank charger(I had to leave out solar for now due to becoming overbudget).

With that said, I wanted reach out and see if anyone had spotted an error in my wiring circuits, or had a better way of doing it. (maybe you know of a particular product or something). Either way, just my part of seeking out experienced knowledge and trying to learn from you guys. Thanks
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