[RE-wrenches] Parallel Wire combining

[Larry]

That's the part that is throwing me off. If I have 3 times the circular 
mil and compare that to a single conductor of similar circular mil, how 
do I have 3 times the ampacity? These are very different numbers.

Example: 1/0 @ 90c is 170 amps x 3 = 510 amps. 510A is what a conductor 
just over 750 AWG will carry. The circular mils of 3 1/0 cables is only 
325,050 or a 325 AWG cable which would be rated at about 330 amps.

So, is it 510 amps (3x the ampacity) or 330 amps (3x circular mil)? And, 
more importantly, why?

Larry

On 12/2/14 11:14 AM, Bill Turberville wrote:
>
> I am sorry.  Bad fingers.  Three times the ampacity under the same 
> conditions.
>
> *From:*RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org 
> <mailto:re-wrenches-bounces at lists.re-wrenches.org>] *On Behalf Of *Larry
> *Sent:* Tuesday, December 02, 2014 12:09 PM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] Parallel Wire combining
>
> OK, let's use 1/0 for the example. 108,350 x 3 = 325,050. Do I now 
> have a cable between 300 and 350 AWG?
>
> Thank you,
>   
> Larry
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20141202/276eee04/attachment-0002.html>