Wire size between Battery and System? - SailNet Community

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  #1  
Old 01-01-2008
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Wire size between Battery and System?

I am replacing the wiring that runs from my battery to my fuse panel and I am not sure what size I should use?

I think I am supposed figure up how many volts/amps are needed to run whatever is connected to the system. I am not sure what to do when I have that number or really how to get the number. The things I am running are very basic and would not all be running at the same time.
They are as follows:
VHF
FM/AM/cd Player
Depth Sounder
1 LED 7" dome light and 2 4" LED dome lights
All running lights and anchor lights (not LED)
1 Bilge pump

I am not sure what gauge I should run. I was thinking 10 should do. Can anyone give a suppestion of what gauge I should use, or how to figure it out?

Thanks Everyone!
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Old 01-01-2008
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The distance is approx. 3'.

There isnt a main panel fuse. But there are fuses for each switch and they have 2 numbers on the fuses. 32 and 20 but I am not exaclty sure which is which at the moment.

Does that help rick?
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Old 01-01-2008
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A AWG 10 is good for your purpose, 8 is better, the error is in your favor. Check on those breaker values, though
Howard Keiper
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Old 01-01-2008
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Should he also have a breaker between the batt bank and Dist. Pnl ???
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Old 01-02-2008
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According to Casey and Calder and perhaps ABYC, all batteries should be fused at the battery. Within inches really. I've retrofitted my electrical system with these fuses and feel very good about there being no opportunity for a short to melt my wires.
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Old 01-02-2008
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Wire Size Calculator:
http://beta.circuitwizard.bluesea.com/
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