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Go Back   SailNet Community > On Board > Gear & Maintenance > Electrical Systems
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  #1  
Old 07-18-2014
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Rewiring US Yacht 25

I'd like to rewire my US Yacht 25 (1982). Have read up and down this forum, studied diagrams. Not an electrician, but have purchased (and read) the two boating electrical books most quoted here.

At the risk of beating an old horse to death, I will give an attempt at a wiring diagram. History: US Yacht 25. Wires going everywhere and to nowhere. + and - wires going across from each other on same bus.

9.9 OB motor. Have already rewired mast and replaced mast lights with LED's.

Without going into too much detail regarding wire size, just wondering if I have the basics right. Plan on having 2 batteries, and using the house as detailed by Mainsail et al as the full time start/house battery.

Thanks for your input.
Chris
Tri-Cities, Wa.
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US Yacht 25 "Chinook"
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Old 07-18-2014
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Re: Rewiring US Yacht 25

Pretty basic diagram but it looks ok. How will you be charging the batteries?
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Old 07-19-2014
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Re: Rewiring US Yacht 25

Thank You Brian,

That was my next question. Would it be easier and less complicated to get a battery charger that monitors both batteries? Or go with an ACR?

I didn't want to get too detailed regarding wire size just yet. Just wanted to make sure I had the right idea.

I've been carefully collecting and using appropriate tools....wire cutter and crimper, heat gun. Just received a battery crimper. I have a wife, you should have seen her response to me purchasing a $180 tool. Have new Bus's, and a Blue Sea electrical panel. Still need a charger, and of course, appropriate sized wire and lugs.

Thanks!
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US Yacht 25 "Chinook"
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Re: Rewiring US Yacht 25

If the outboard charges I would get an ACR. If you will be adding solar the ACR makes sense as well. If the AC charger will be the only method of charging most good marine chargers will charge at least 2 banks.
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Re: Rewiring US Yacht 25

Appreciated, thanks!
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US Yacht 25 "Chinook"
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Re: Rewiring US Yacht 25

Ok. Have built a battery box and rewired (using Main Sail's recommended tools and techniques) to 12B0 switch and then + and - busbars.

Question: I have a 10 bank Blue Sea electrical panel. However, I get confused (often). Esp. where it comes to wiring multiple circuits to the panel. The provided diagram recommends connecting + circuit wires to the panel. Should I also connect each - circuit wire to the electrical panel, or to the large - bus I have installed nearby. For the record, I ran the - bus on 4awg right after the battery.

Thanks again!
Chris
Chinook
US Yacht 25
Kennewick, Wa.
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US Yacht 25 "Chinook"
Kennewick, Wa.

Last edited by budvar; 4 Weeks Ago at 05:20 AM.
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Re: Rewiring US Yacht 25

I use a bus for the negative wires. It keeps the panel neater.
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Re: Rewiring US Yacht 25

Thanks Brian. I just wanted to make sure wasn't missing something. The - bus has 20 #10's. I'm sure wiring the - to the - bus was obvious to most people, just not myself. And yes, it will definitely make things neater and less clutter behind the panel.

FYI. Wife and I are not too far from you. We're visiting Anacortes/Bellingham in two weeks. We're getting closer to retirement and looking for a new place to call home.

Thanks again,

Chris
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