Please critique my charging schematic - Page 2 - SailNet Community

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  #11  
Old 04-27-2012
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Re: Please critique my charging schematic

MaineSail -
You nailed it. I am going with this system thanks to all the input from yourself and others, and I'm really happy with the relative simplicity combined with great flexibility.

Also of note for all of us sailnetters.....I brought my schematic down to the electrician at the boat yard today to get his blessing. He looked at it, then pulled out a 1" stack of sailnet electrical threads that he had printed out. Seems like everyone reads the threads here Also, he had only praise for you, MaineSail.....said you were pretty much always spot on. So I'm glad my system got your stamp of approval. And thanks for the suggestion about wire gauge for House-Starter -- that had been lurking in the back of my brain, and i'm glad you made me confront.

Thanks everyone!
cheers
greg
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Old 04-30-2012
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Re: Please critique my charging schematic - UPDATE

Hello everyone

So I was able to get everything installed this weekend, and so far it looks great. I'm waiting on a couple of fuses in order to test everything out, but in the meantime I have one more question.

My cable that goes from the 1/2/ALL/OFF switch to the starting circuit is not quite long enough to reach the ON/OFF switch, but it can reach the starter. Is connecting it directly to the starter functionally identical to connecting it to the common pole of the ON/OFF switch?

And one other question ....about the 12v system.
How do people normally fuse the mast lights? With one of those little in-line fuse holders?

Thanks everyone for your help!
greg
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Old 04-30-2012
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Re: Please critique my charging schematic

Greg-
If your wiring is now as the diagram in msg 10? Yes, going straight to the starter from the a/b switch is the same as using the on/off switch in the "on" position.

Normally there is a fuse or breaker on the DC panel that says "NAV LIGHTS" or similar, and they are fused there, on the panel. One for the nav lights, another for the anchor light, a fourth for the steaming light, and those breakers are used as the on/off switches for them. If you don't have a breaker panel (or switch-and-fuse) panel, there are some inexpensive ones that use the glass fuses or the newer auto style fuses.
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Re: Please critique my charging schematic

Hey there HelloSailor

Yeah, my old panel has the fuses built in, but the new West Marine panel like this WEST MARINE DC Electrical Panels at West Marine doesnt have any fuses built in, so i was thinking about using these BLUE SEA SYSTEMS Crimp-On Fuse Holder at West Marine
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Old 04-30-2012
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Re: Please critique my charging schematic

The West Marine panels you linked to have Carling breakers - they don't need fuses.
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Re: Please critique my charging schematic

Huh, it looks like some clever chinaman supplying West's finest products these days removed the fuseholders from the smallest panel, and replaced them with circuit labels??

Personally, I'd take it back to West and tell the man "You crazy man, gimme dollar!" and replace it with a proper panel. Even one of SeaDog's cheapies.

Or does that small panel have "Carling breakers" ?? (??)

Those inline fuse holders will work, sure, but if they just dangle around, that stresses the wires and they may break. So now you've got four holders to tape or clamp down, four less accessible fuses...it can work, but do you really want to do it that way, when a proper panel can still be used?

Or, you could drill four holes in the West panel and install four glass fuse holders, the type where there's a twist-off cover to access the fuse. If Wet doesn't have them, RadioShack should, in the back of the store in the file drawers under "adults only, real electronic parts". (Honest, they don't shelve them up front anymore.)

WTF were they thinking at West? they could just omit all four swtiches and sell a decal that looked like a panel, if they wanted to make a really cheap one. (!)
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Re: Please critique my charging schematic

hellosailor

The West panels have circuit breakers, although not quite to Blue Seas standards. I installed one Friday.

They do not need fuses!
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Re: Please critique my charging schematic

Huh. Reminds me very much of an old science fiction story criticizing the "gun that didn't make any noise".

Breakers with no fault indicators and no obvious sign of their existance.

I it just me that thinks that's a terribly bad idea? Convenient to be sure, but invisible breakers....
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Re: Please critique my charging schematic

Awesome!
thanks everyone!
greg
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Re: Please critique my charging schematic

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Originally Posted by hellosailor View Post
Huh. Reminds me very much of an old science fiction story criticizing the "gun that didn't make any noise".

Breakers with no fault indicators and no obvious sign of their existance.

I it just me that thinks that's a terribly bad idea? Convenient to be sure, but invisible breakers....
There is the same fault indicator that a Blue Seas breaker has - it shuts off. To meet ABYC (which I assume they do) they have to be trip free design as are the Blue Seas breakers which are made by the same company - Carling.
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