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Old 11-02-2011, 11:37 AM   #1
simple man
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Default Welding cable.

Just curious about the difference in welding cable and fine strand standard cable? All posts I have read suggest using only welding cable for electric cart wiring. Is it the insulation, current capacity, heat rating, etc. ? Thanks!
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Old 11-02-2011, 03:23 PM   #2
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Default Re: Welding cable.

I'm not the expert on the technical why its better but welding cable delivers more current at less resistance due to the increased number of wire strands inside. At least I think this is correct? lol
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Old 11-02-2011, 04:42 PM   #3
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Default Re: Welding cable.

All 4g cable is NOT created equal:

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Old 11-02-2011, 04:47 PM   #4
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Default Re: Welding cable.

Male and female?
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Old 11-02-2011, 04:53 PM   #5
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Default Re: Welding cable.

I don't know how to check that. LOL!
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Old 11-02-2011, 05:53 PM   #6
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Default Re: Welding cable.

I know higher strand count has to do with flexibility. But most current travels on the surface anyhow I believe!

*****waits for johnnieb and Scottyb to enter the thread*****
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Old 11-02-2011, 07:46 PM   #7
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Default Re: Welding cable.

One thing I did find out is that welding cable has a synthetic rubber insulation instead of plastic, so you're not supposed to use it where oil and grease can get on it! I can't see this being an issue on a cart. And as " Colt " mentioned, it is more flexy.
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Old 11-03-2011, 12:39 AM   #8
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Default Re: Welding cable.

Colt is correct about flexibilty.

Solid wire and stranded wire of the same ga have the same current carrying characteristics but the larger it gets, the harder it is to work with. The more strands a cable has the more flexible it is.

The more strands in a wire, the more air space and the larger the wire for the same current spec. EG: 2ga cable with less strands is smaller in diameter than a 2ga cable with more strands. Whether solid or stranded, the total cross sectional area of copper is the same for a given AWG size.

Stationary systems use solid wire and buss bars, anything that creates vibration requires stranded wire for durability as solid wire will break.

The insulation for cart purposes could be either rubber, cross-linked polyethylene or PVC as long as it's rated to 90 degrees C.
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Old 11-03-2011, 01:02 AM   #9
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Default Re: Welding cable.

Quote:
Originally Posted by Coltf1991 View Post
I know higher strand count has to do with flexibility. But most current travels on the surface anyhow I believe!

*****waits for johnnieb and Scottyb to enter the thread*****
AC travels on the surface (skin effect), the higher to voltage and frequency, the more pronounced this effect is. Very High Voltage AC transmission cable is hollow.

DC travels through the core so as Scotty says the more fine the strands the more flexible. Also for more reading Stranded wire. As for cross section, regardless of the number of strands, it is about 90% of the cross section of a solid conductor. This is due to Circle packing.

The other issue is you want an acid resistant insulator as this is connected to batteries. Tin platted strands will also resist corrosion or you must be even more careful to seal the lugs where they join the wire.
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Old 11-03-2011, 02:22 PM   #10
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Default Re: Welding cable.

yea what he said

Thanks for looking out for me Wizard!
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