Good Sam Club Open Roads Forum: What ga wire do I need ?
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CA Traveler

The Western States

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Posted: 08/01/20 01:59pm Link  |  Quote  |  Print  |  Notify Moderator

My calculator shows that 14.8V, 18', 6ga will have a 0.78V drop or 14.02V at the battery. Probably OK.

I would extend the 6A wire from the charger to the battery with a CB and tap off of that for the panel.

Actually I would upgrade to 4ga which would result in 14.3V. But I'm into performance and maybe even bragging rights.


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Posted: 08/01/20 02:03pm Link  |  Quote  |  Print  |  Notify Moderator

Food for thought: What works for 120VAC doesn't translate directly into 12V.

That 0.78V drop for 120VAC results in 119.22V and so who cares? But at 14.02V on a battery system something to consider... or not. [emoticon]

dockmasterdave

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Posted: 08/01/20 02:08pm Link  |  Quote  |  Print  |  Notify Moderator

Update
I looked online and found a 60 amp surface mount circuit breaker for $33. I can get 2 36" 6GA battery cables with eye ends.
1 will go from the battery terminal to the circuit breaker.
The other will go out of my battery box to connect to the existing 6GA wire. The existing 30 amp fuse block can stay in place to run my other loads.
They currently have the 10GA to 6 GA connection under the TT with a huge wire nut. I will put an eye on the existing cable and connect to the new cable with a bolt, then waterproof the whole connection.
This sounds like the RIGHT and safe thing to do. Much better than the factory setup. Thank you for pointing me in the right direction.


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Posted: 08/01/20 02:22pm Link  |  Quote  |  Print  |  Notify Moderator

I love it when a plan comes together!

time2roll

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Posted: 08/01/20 02:26pm Link  |  Quote  |  Print  |  Notify Moderator

Get the exact length and terminal eye hole size for probably just a few $$$ more:

https://www.genuinedealz.com/products/cu........m-battery-cable-marine-grade-by-the-foot


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2112

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Posted: 08/02/20 06:43am Link  |  Quote  |  Print  |  Notify Moderator

I have to ask, what is the total Ah of the batteries you wanting to charge? Do most typical battery banks demand more than 30A charge when depleted? And if it does, how long will the current be above 30A? Mods may not be needed.


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