nate
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1963 Comet 17'
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Post by nate on Aug 24, 2018 9:41:28 GMT -8
Hi,
What's the best way to ground all 12V lights and appliances? If doing a frame-up do I run a hot and ground wire to each circuit and ground back at the fuse block?
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RinTin
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Post by RinTin on Aug 24, 2018 10:21:11 GMT -8
Assuming you are talking about the house wiring and not the tow wiring, I ground my battery to the frame as well as my fuse block. I run a positive and negative lead from the fuse block for each circuit. Depending on the load, some circuits service only one fixture such as a water pump, and some circuits service several fixtures such as LED lighting.
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Post by vikx on Aug 24, 2018 20:23:36 GMT -8
I install a ground bracket near the fuse block that is directly grounded to the trailer frame. There are junction boxes where I combine near by grounds and then use one wire back to the bracket. In other words, not every ground goes all the way back to the bracket. If they are properly connected, the one wire to the bracket grounds the rest.
My fuse box is only for the hots. A battery hot runs to the main stud and the circuits are then connected to the fused blades.
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oakback
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Post by oakback on Sept 26, 2018 15:44:34 GMT -8
So if I have all my ground run back to a bus bar, I then wire the bus bar to the battery. I need to also have a wire from the ground bus bar to the frame as well? If that's correct, why does it need to be on the frame?
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Post by vikx on Sept 26, 2018 19:59:26 GMT -8
The trailer frame IS the ground. You run the battery negative to the trailer frame and firmly secure it to the frame with a bolt or lug. The inside ground bracket is also connected to the trailer frame, so the battery, inside grounds and frame are all one.
The 110 system is also grounded to the frame but should be separate from the 12 volt grounds. I use a lug and heavy solid wire from the breaker box to the frame.
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man314
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1964 Shasta 16-SC
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Post by man314 on Jan 23, 2019 12:19:31 GMT -8
The trailer frame IS the ground. You run the battery negative to the trailer frame and firmly secure it to the frame with a bolt or lug. The inside ground bracket is also connected to the trailer frame, so the battery, inside grounds and frame are all one. The 110 system is also grounded to the frame but should be separate from the 12 volt grounds. I use a lug and heavy solid wire from the breaker box to the frame. I'm also working with this. Is there any issue with the 12v and 110 systems sharing the frame as a ground?
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kirkadie
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'69 Serro Scotty Hilander
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Post by kirkadie on Jan 23, 2019 13:43:06 GMT -8
theoretically the 110 is grounded (to the earth) at the supply end of power cord you plug your trailer into. That power cord is connected to your grounded (to trailer frame)breaker box. Is that correct, Vikx?
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Post by youngbloodhawk on Jan 23, 2019 16:29:07 GMT -8
One should understand the difference Between the neutral and ground wires with these Dyi projects
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Post by vikx on Jan 23, 2019 22:07:40 GMT -8
Kirkadie you are correct, thanks.
The frame can be used as a ground for both the 12 volt and 110 systems, but each should be connected separately.
The common wires are NEVER connected to the grounds in a trailer or RV. If there is a question of the difference, please hire a qualified individual to do your electrical system.
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