Battery Cable Size

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Re: Battery Cable Size

Postby Bigdog » Fri Jan 20, 2012 4:37 pm

The big factor is that you are now dealing with a 12 volt system which reduces current flow by half. Your automotive cables will work fine on a 12 volt system. As far as color goes - typically on a DC circuit red indicates a positive lead and black indicates a negative lead. In reality - the electrons don't care what color the insulation is. I don't rely on cable color to troubleshoot. I follow the wires.
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Re: Battery Cable Size

Postby indy61 » Fri Jan 20, 2012 6:05 pm

Barnyard wrote:TM Tractor Parts sells 6v cables that are 1 awg, is that big enough?


It looks like it's only 2 AWG.

http://www.tmtractor.com/new/el/2581fp.htm
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Re: Battery Cable Size

Postby Barnyard » Fri Jan 20, 2012 6:15 pm

indy61 wrote:
Barnyard wrote:TM Tractor Parts sells 6v cables that are 1 awg, is that big enough?


It looks like it's only 2 AWG.

http://www.tmtractor.com/new/el/2581fp.htm

Wow, it sure is.
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Re: Battery Cable Size

Postby indy61 » Fri Jan 20, 2012 6:36 pm

I would think anything larger than 1 AWG would be hard to route in the original locations.
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Re: Battery Cable Size

Postby Dan W. » Sat Jan 21, 2012 3:02 pm

After reading this discussion I went out and checked my Cub. It has a battery cable purchased specifically for a Cub from the local Case/IH dealer and it is 2 AWG.
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Re: Battery Cable Size

Postby HitNmiss1923 » Sun Jan 22, 2012 9:50 pm

Interesting topic, I was curious if using dielectric grease on the farmall electrical system has any benefit.. Thanks
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Re: Battery Cable Size

Postby Hengy » Mon Jan 23, 2012 9:28 am

Well, I'll weigh in for what it's worth. Merlin is due for a new main cable from the battery to the starter because the one that came with him is still with him and is UGLY. The thing is that it is actually a 4-Gauge cable. It is what has been on the tractor since before I got it, and it has had no problem turning the engine over. Now, I don't recommend that size cable on anyone else's tractor because it is undersized for the current draw, but if the system is in good shape, it will handle the current.

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