Wire question

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Old 05-21-08, 02:26 AM
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Wire question

I have some SAE J1127 105* 2ga wire, can this be used to wire from a main panel to sub panel for the two hot wires and is so how many amps can this run and what wire would I need for ground and neutral?
This would be indoor less than 50' run.
Thanks in advance.
 
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Old 05-21-08, 08:58 AM
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Originally Posted by XC967 View Post
I have some SAE J1127 105* 2ga wire
Is there any other printing on the wire, particularly an insulation rating like THHN or XHHW? Is it copper or aluminum? What color insulation?
 
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Old 05-21-08, 09:06 AM
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Copper wire with red insulation, I am pretty sure it is battery cable.
 
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Old 05-21-08, 09:08 AM
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No, that can't be used for premises wiring; battery cable is only rated for 50V max.
 
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Old 05-21-08, 05:45 PM
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Just go any big box store they will have proper cable stocked you can buy it.

any automotivte wires are not approved in the building useage.

How big subpanel it is ?? and what size breaker you plan to use from main panel to subpanel ??

Merci,Marc
 
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Old 05-22-08, 01:33 PM
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silly question, but why not? copper is copper. I must assume that it has to do with the insulation?
 
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Old 05-22-08, 02:29 PM
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Originally Posted by emoboy44 View Post
I must assume that it has to do with the insulation?
That's correct, insulation is rated for both max temperature and max voltage. In this case, the automotive wire is rated to contain only 50V whereas premises wiring is rated to contain at least 600V. If you used 50V wire in a 120V (or 240V) circuit, the insulated wires could short out just laying next to each other.

The least important part of a safe circuit is the copper; after all it can withstand something like 2,000F. Plastic insulation, people and other materials don't fair so well under those conditions.
 
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Old 05-22-08, 04:52 PM
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Yup Low voltage battery cable. Just type "SAE J1127" into google and you will find the info.
 
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