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Wire gauge for auxiliary fuse panel
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Red Ryder
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PostPosted: Tue Jul 20, 2021 2:10 pm    Post subject: Wire gauge for auxiliary fuse panel Reply with quote

Thinking about installing an auxiliary fuse panel behind the glovebox. I plan to pull power directly from the primary battery under the passenger seat for a short run under to this location. Would 8 gauge wire be satisfactory for this application?
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Vanuber
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PostPosted: Tue Jul 20, 2021 3:33 pm    Post subject: Re: Wire gauge for auxiliary fuse panel Reply with quote

Red Ryder wrote:
Thinking about installing an auxiliary fuse panel behind the glovebox. I plan to pull power directly from the primary battery under the passenger seat for a short run under to this location. Would 8 gauge wire be satisfactory for this application?


It all depends on what you hooking up to the fuse panel. What is the maximum total power draw in amps?

Plug that number into the Blue Sea wire selection chart: http://assets.bluesea.com/files/resources/newsletter/images/DC_wire_selection_chartlg.jpg
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squeegee_boy
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PostPosted: Tue Jul 20, 2021 3:35 pm    Post subject: Re: Wire gauge for auxiliary fuse panel Reply with quote

https://www.bluesea.com/resources/1437

Here's a good table for this.

For a run that short 8GA wire is good for 40A, fused appropriately.

Robyn
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crazyvwvanman
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PostPosted: Tue Jul 20, 2021 4:00 pm    Post subject: Re: Wire gauge for auxiliary fuse panel Reply with quote

Here you can see that #8 Marine wire is rated for up to 80 amps continuous.
http://assets.bluesea.com/files/resources/reference/21731.pdf

Without knowing the size and type of loads you plan to run at the same time we can't say if you should go a size heavier.

Mark
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Gnarlodious Premium Member
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PostPosted: Tue Jul 20, 2021 5:42 pm    Post subject: Re: Wire gauge for auxiliary fuse panel Reply with quote

#8 should be plenty for anything you are running up there, except for a loud audio amplifier.
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Red Ryder
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PostPosted: Tue Jul 20, 2021 6:19 pm    Post subject: Re: Wire gauge for auxiliary fuse panel Reply with quote

Thanks for the great feedback.
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