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 Post subject: DC Distribution Panel Redux
PostPosted: 08 Nov 2020 10:50 
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Skipper

Joined: 13 Feb 2011 21:19
Posts: 249
Location: Canyon Lake, TX
Like most of us, my 12V wiring behind the panel is a mess.
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So first off I started looking for a wiring diagram that I could use as a template. Nope! Well, I did find one for a 1976 model. But it only has 6 circuit breakers. Impetuous is a 1980 model and has the bigger panel. But here's what I found for the 1976 model.
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Interestingly, the mast lights are on the engine panel?

I have already replaced my volt and ammeter with a single digital unit so what I really needed was a larger distribution panel. And someone on here was going to use the Blue Seas 8264 which doesn't have any meters.
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Cool. Still no wiring diagram. And we go sailing everytime we get to the boat so I never had time to fix the issue.

THEN CAME SALLY!
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The marina will be up to 9 months repairing/replacing the floating docks so....

I used the 1976 diagram for ideas and inspiration. The 8264 has three positive buses and three negative buses. I needed to split up some circuits as fans, 12V plugs and lights are currently all together. Too many things were wired onto the "Accessory" breaker. And so I used up a lot of the circuit breakers on my new panel. I decided to remove the bilge pumps from the distribution panel as they can be accidentally turned off. And there is no breaker within 7" of the batteries. So that had to be fixed also. I plan to install a 100A ANL fuse at the batteries. And a Blue Seas 5045 Fuse Block near the new panel. The top left circuit breaker will be removed from in series with the panel so it can be the "Main" breaker and upgraded to 30A. It is shown as "A1" on the drawing. "B1" is the top middle breaker and "C1" is the top right breaker. So, here's wiring diagram that I have created. Hopefully, it will help someone with their project.
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Wiring Diagram.pdf [56 KB]


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I simplified the bilge pump wiring for this diagram. They can still be manually run or use the float switch. What is not shown on this diagram are the two LEDs wired from the positive supply to the bilge pumps to the negative bus bar. These are mounted on the 12V box and indicate power from the fuse block to the pumps. I thought it might be confusing to see those wires on the diagram. This diagram was created on OpenOffice Drawing and exported as a PDF. It's available in either format but the ODG extension is not allowed on our website.

_________________
Wayne
Master and Commander of the Sailing Vessel Impetuous
Rider of Waleli Honda 1800 VTX
Subservient to no man except SWMBO
Any day without dock lines is a GOOD day!


 
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 Post subject: Re: DC Distribution Panel Redux
PostPosted: 10 Dec 2020 08:46 
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Able Bodied Seaman

Joined: 06 Aug 2020 09:02
Posts: 42
Wayne, thanks for this post. I probably won't get to rewiring my panel this winter but I will be glad if you have figured out a reasonable solution that I can copy! Hull 240 is also a 1980 model and I just checked the electrical diagram in the "Owners Instructions" book and it indeed has the 1976 diagram (WTH!). My panel is shown below and I assume yours looks the same. The charging station was installed there because it fit well in an existing hole for an old clunky Datamarine log. My volt meter still works but is redundant now with the battery monitor installed. The ammeter is disabled. So, I have that real estate to play with. I will be installing a new Raymarine electronics suite this year (Axiom, i50, i60, i70, VHF) integrated into my existing ST4000+ autohelm. The i70 MFD will be on the nav somewhere so need another cutout spot. I have a separate automatic bilge pump switch on the side of the nav panel already wired direct to the battery. Original bilge pumps on the panel still work, sorta of (I have to throw both switches for some reason). I'm interested to know how you plan to arrange your nav (panel, displays, VHF, AIS, etc). Please keep us updated on progress. Thanks.


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 Post subject: Re: DC Distribution Panel Redux
PostPosted: 10 Jan 2021 22:05 
Offline
Able Bodied Seaman

Joined: 06 Aug 2020 09:02
Posts: 42
Installed this new auxiliary panel last week but now thinking I should replace the main panel too. Any time I do any wiring in the back of the panel I end up losing my mind. So hard to work back there. And I had to replace my nav lights breaker which requires that you unscrew all of them!


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