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The "area" of the conductor will be 3 times and you would think
that the NEC Ampacity would also be 3 times<br>
that of one conductor. But one LARGE conductor with the same
area might not be as high as you think<br>
because of insulation. I would think that ampacity of 3 cables in
parallel would be 3 times. But probably<br>
not when you take a single cable of the 3X area out of the NEC
table. (I haven't looked at this to verify)<br>
<br>
Also, Larry, 325 AWG 750 AWG (gauge) wire is a bit too small for
this, don't you think ?<br>
<br>
I know... You mean circular mils...<br>
boB<br>
<br>
<br>
On 12/2/2014 1:49 PM, Larry wrote:<br>
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<div class="moz-cite-prefix">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.<br>
<br>
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. <br>
<br>
So, is it 510 amps (3x the ampacity) or 330 amps (3x circular
mil)? And, more importantly, why?<br>
<br>
Larry<br>
<br>
On 12/2/14 11:14 AM, Bill Turberville wrote:<br>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I
am sorry. Bad fingers. Three times the ampacity under
the same conditions.</span></p>
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1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">
RE-wrenches [mailto:<a moz-do-not-send="true"
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>]
<b>On Behalf Of </b>Larry<br>
<b>Sent:</b> Tuesday, December 02, 2014 12:09 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] Parallel Wire
combining</span></p>
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<p class="MsoNormal"> </p>
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<p class="MsoNormal">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?<br>
<br>
</p>
<pre>Thank you,</pre>
<pre> </pre>
<pre>Larry</pre>
<br>
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