battery gauge wire

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crimsonsnake0   10 W

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battery gauge wire

Post by crimsonsnake0 » Aug 06 2010 9:01am

hi could anyone with the knowledge recommend the correct gauge wire for controller and wiring batterys ? looking at 72v 1500 watt 45amp controller whats suitable please ? 10 gauge car audio wire? will that take the volts amps ?regards to all ebikers

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Ypedal   100 GW

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Re: battery gauge wire

Post by Ypedal » Aug 06 2010 11:31am

12 gauge will do if the runs are short.... if you have to run long wires go for the 10 ! :wink:
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ambroseliao   100 kW

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Re: battery gauge wire

Post by ambroseliao » Aug 06 2010 11:49am

Here are a couple of links for battery gauge thickness versus current carrying capacity...

http://www.powerstream.com/Wire_Size.htm

http://en.wikipedia.org/wiki/American_wire_gauge

Or as YPedal says, use 12 AWG unless you have a long run, then use 10 AWG. :D

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tostino   10 kW

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Re: battery gauge wire

Post by tostino » Aug 06 2010 4:00pm

I'm personally a fan of the biggest wire you can afford to run. I just moved my battery pack up to 8ga wire :)

texaspyro   100 kW

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Re: battery gauge wire

Post by texaspyro » Aug 07 2010 1:04pm

Be VERY wary in your choice of wire... particularly car audio wire. That industry is full of frauds and mis-speced specs. My testing of car audio wiring showed many "100% pure oxygen free copper" wires (even from big names) was not. Some was plated aluminum at 1.6 times the resistance of copper. Others were mystery metal with over 3 times the resistance of copper.

Some 4 gauge wire was maybe 10 gauge, surrounded by lots of (cheap) insulation. You might think that you bought 4 gauge, but you got 8 or 10 gauge in disguise. In the heavy gauge (0 - 8 gauge) material, the Scosche EFX Flux cables and Excelene welder cables tested very well.

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Ypedal   100 GW

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Re: battery gauge wire

Post by Ypedal » Aug 07 2010 4:26pm

The best stuff i've use so far is the hobbyking.com silicone stuff ( supper soft, and crimps well.. )

http://www.hobbyking.com/hobbyking/stor ... (1mtr)_RED
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texaspyro   100 kW

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Re: battery gauge wire

Post by texaspyro » Aug 07 2010 4:43pm

Ypedal wrote:The best stuff i've use so far is the hobbyking.com silicone stuff ( supper soft, and crimps well.. )
If you are curious about its actual quality/resistance/material/etc send me a foot or two and I'll test it on my HP3458A 8.5 digit meter with the Kelvin connections... I can resolve down to micro ohms.

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Ypedal   100 GW

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Re: battery gauge wire

Post by Ypedal » Aug 07 2010 6:03pm

Cool !!.. shoot me a PM with a shipping address !.. i'll send a piece of 12 gauge and 10 !. 8)

Along with some zip cord :
http://www.powerwerx.com/wire-cable/red ... -cord.html

Stiffer, and not silicone coated, but i'm curious to know wich is better in terms of resistance !
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johnnythefox   1 mW

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Re: battery gauge wire

Post by johnnythefox » Feb 26 2011 6:11pm

Anyone know the results of the test ?

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Ypedal   100 GW

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Re: battery gauge wire

Post by Ypedal » Feb 26 2011 6:37pm

The result is the sad truth that i'm lazy procrastinating mofo... :oops: I still intend to follow thru with this... eventually lol..
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Nathan P   1 µW

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Re: battery gauge wire

Post by Nathan P » May 04 2011 12:45pm

Did that test ever get run? :)

If you really need large cable at a good price, welding cable can be had cheap at most welding supply shops. I got 20 ft of 2 gauge for $40 IIRC. They had everything from 8 AWG to 0 AWG.

Nathan

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