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PostPosted: Fri Mar 25, 2016 8:20 pm 
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1098cc
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Hey all, I did a search but couldn't find an exact answer.

What amperage rating main battery cable should I use?

I bought this from Jaycar thinking about the load of my electrics and alternator but I must have been out of it, I didn't take into consideration the starter motor requirements.

See specs below from Jaycar website (clicky), rated 160A continuous, this should be right for higher spikes of my (high torque) starter motor don't you think? Or not?

Quote:
Red 2G Car Power Cable
Available in Red and Black. Run this from your car battery to distribution boxes and then 8GA or 4GA to amps, etc.
* Conductor Material:OFC
* Insulation Material: PVC
* Stranding: 145 x 19 / 0.12mm
* Wire Diameter: 35.16mm2
* Total Diameter: 12.0mm
* Current Capacity: 160A
* Resistance @ 20oC: 0.0007ohm/mt

Red Cat. WH3070
Black Cat WH3072
Image


Starter Motor details see (clicky) and below

Quote:
...This starter is designed for demanding race application and especially high compression motors where more cranking power can be achieved using much less of the battery power, we use these on all Minisport built race cars. Also highly advised to be used on any car running a webber....

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PostPosted: Fri Mar 25, 2016 8:39 pm 
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SooperDooperMiniCooper ExpertEngineering
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Joined: Fri Apr 29, 2005 9:46 am
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Location: Under the bonnet son!
This is the one. Plenty of capacity and Jaycar sell good cable. Watch your terminations and use good crimps and it will work fine.

The new cable with a modern design starter motor will have your engine spinning like a top.

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PostPosted: Fri Mar 25, 2016 9:00 pm 
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1098cc
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Ah you're a gentleman and a scholar Mick, thanks very much. And that's the answer I was hoping for too :)

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PostPosted: Sun Mar 27, 2016 6:13 pm 
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1360cc
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Location: SE Melbourne
You shouldn't be using that under the car for the main power - thats for stereos.
Main power uses a heavier, thicker wire with a coating on it more like a PVC than anything else that is far more resistant to damage and abrasion than that stuff.


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PostPosted: Sun Mar 27, 2016 6:27 pm 
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1098cc
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Harley wrote:
You shouldn't be using that under the car for the main power - thats for stereos.
Main power uses a heavier, thicker wire with a coating on it more like a PVC than anything else that is far more resistant to damage and abrasion than that stuff.

For sure - that pic is not actually of the main power cable. It's a general 2G/4G/8G cable pic that Jaycar used, I shouldn't really have included it. I'll post up the actual pic from my computer

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PostPosted: Sun Mar 27, 2016 6:28 pm 
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PostPosted: Sun Mar 27, 2016 8:14 pm 
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35mm square welding cable works


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