Fusing direct to battery connections - bus? - SailNet Community

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Old 08-01-2013
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Fusing direct to battery connections - bus?

Hi All,

I have stereo memory and bilge pump hard wired and individually fused to my battery so they are "always on". I also have an AC charger and alternator running to the main battery, again, fused. I'm also in the process of adding solar so that's three charging sources, all independently fused .. CLUTTER. I hate cable clutter so you tell me if this is a bad idea:

One bus for those "always on" devices, fuse between the bus and the battery sized appropriately. Bilge pump and stereo memory are run to this bus.

One bus for charging devices, again, fused appropriately between the battery terminal and bus. Solar, AC and alt are hooked up to this bus.

Is there a reason that it's not done this way? Or, is it done this way and I've only seen the cluttered up installations?

I'll add that I have two batteries and a blue sea "off, 1, both, 2" switch. For now, I charge "both" batteries when I run the motor so the switch is in the both position when I run the motor, and only when I run the motor. I start the motor off of 1 and I run all house things off of 1. Battery 2 is just back up and gets a charge while motoring.

I will install an ACR or an echo charger in the future, when boat bucks allow. I just spent a bunch on solar, plumbing and fixtures!

Thanks

Last edited by smp; 08-01-2013 at 01:02 PM.
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Old 08-01-2013
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Re: Fusing direct to battery connections - bus?

Watching with interest, as I am also doing this. I plan to use a fused bus bar to fuse each component, rather than fuse the one wire to the battery.

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Old 08-01-2013
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Re: Fusing direct to battery connections - bus?

this article may help some:

Installing A Marine Battery Charger Photo Gallery by Compass Marine at pbase.com

scroll down a bit to "Fuse Distribution Close-Up" to see how he busses his fuses together.
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Old 08-02-2013
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Re: Fusing direct to battery connections - bus?

I have this, which incorporates some 24 hour circuits that are powered up even when the switch is off. Very convenient.



I also have a powered fuse panel similar to the one that is pictured above. This is activated only when the battery switch is on, however, but it is very convenient and avoids clutter. I just used it to wire a fan in the forepeak.
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Re: Fusing direct to battery connections - bus?

Here is a picture of the fuse panel, with a power feed coming off the main DC feed to my circuit breaker panel (which is folded down in the picture):

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