[RE-wrenches] Parallel Wire combining

[Larry]

Hey boB,

This is the reference table I was using. They show 325 AWG and 325kCM 
refer to the same diameter cable but I should have used kcm for clarity.

If all insulation/temp rating is the same we are back to my original 
question. Anyone else able to explain this? To be safe I am leaning 
toward using the combined CM number to size for current rather than 3 
times the ampacity as that just makes no sense to me.


On 12/2/14 3:54 PM, boB at midnitesolar.com wrote:
>
> The "area" of the conductor will be 3 times and you would think that 
> the NEC Ampacity would also be 3 times
> that of one conductor.   But one LARGE conductor with the same area 
> might not be as high as you think
> because of insulation.  I would think that ampacity of 3 cables in 
> parallel would be 3 times.  But probably
> not when you take a single cable of the 3X area out of the NEC table.  
> (I haven't looked at this to verify)
>
> Also,  Larry,  325 AWG 750 AWG (gauge) wire is a bit too small for 
> this, don't you think ?
>
> I know...  You mean circular mils...
> boB
>
>
>>

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