<font size=2 face="sans-serif">Hi:</font>
<br>
<br><font size=2 face="sans-serif">Look at it this way,</font>
<br>
<br><font size=2 face="sans-serif">The three conductors in parallel can
handle more current because they have more surface area with which to dissipate
heat. Or to put it another way, the heat from the middle of the thick
975 kCM cant get out and so the wire stays hotter.</font>
<br>
<br><font size=2 face="sans-serif">See picture,</font>
<br>
<br><img src=cid:_1_0D76F3380D76E90C0002658888257DA3>
<br>
<br><font size=2 face="sans-serif">JARMO<br>
</font><font size=3 color=#008000>_____________________________________________________________________________________</font><font size=3>
<br>
</font><font size=1 face="Arial"><b><br>
Jarmo Venalainen</b> | </font><font size=1 color=#008000 face="Arial"><b>
Schneider Electric </b></font><font size=1 face="Arial"><b> | Solar
Business</b> | <b>CANADA</b> | <b>Training &
Development Specialist - Senior</b> <b><br>
Phone:</b> +604-422-2528 | <b>Fax:</b> +604-420-1591 |
<b>Mobile:</b> +604-505-0291 <b><br>
Email:</b> </font><a href="mailto:jarmo.venalainen@schneider-electric.com"><font size=1 color=blue face="Arial"><u>jarmo.venalainen@schneider-electric.com</u></font></a><font size=1 face="Arial">
| <b>Site:</b></font><a href=http://www.sesolar.com/ target=_blank><font size=1 color=blue face="Arial"><u>
www.SEsolar.com</u></font></a><font size=1 face="Arial"> |
<b>Address:</b> 3700 Gilmore Way, Burnaby, BC V5G4M1 <br>
</font><font size=1 color=blue face="Arial"><u><br>
</u></font><a href="http:// www.sesolar.com/"><img src=cid:_2_0D76F1340D7527140002658888257DA3></a><font size=1 face="Arial"><br>
*** Please consider the environment before printing this e-mail</font><font size=3>
<br>
</font>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">From:</font>
<td><font size=1 face="sans-serif">Larry <larry@starlightsolar.com></font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">To:</font>
<td><font size=1 face="sans-serif">RE-wrenches <re-wrenches@lists.re-wrenches.org>,
</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Date:</font>
<td><font size=1 face="sans-serif">12/02/2014 03:30 PM</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Subject:</font>
<td><font size=1 face="sans-serif">Re: [RE-wrenches] Parallel Wire combining</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Sent by:</font>
<td><font size=1 face="sans-serif">"RE-wrenches" <re-wrenches-bounces@lists.re-wrenches.org></font></table>
<br>
<hr noshade>
<br>
<br>
<br><font size=3>Hey boB,<br>
<br>
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. <br>
<br>
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. <br>
<br>
</font><img src=cid:_4_0D762CA00D76288C0002658888257DA3 width=753 height=658><font size=3><br>
On 12/2/14 3:54 PM, </font><a href=mailto:boB@midnitesolar.com><font size=3 color=blue><u>boB@midnitesolar.com</u></font></a><font size=3>
wrote:</font>
<br><font size=3><br>
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>
</font>
<br>
<br><tt><font size=2>_______________________________________________<br>
List sponsored by Redwood Alliance<br>
<br>
List Address: RE-wrenches@lists.re-wrenches.org<br>
<br>
Change listserver email address & settings:<br>
</font></tt><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org"><tt><font size=2>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</font></tt></a><tt><font size=2><br>
<br>
List-Archive: </font></tt><a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html"><tt><font size=2>http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</font></tt></a><tt><font size=2><br>
<br>
List rules & etiquette:<br>
</font></tt><a href="www.re-wrenches.org/etiquette.htm"><tt><font size=2>www.re-wrenches.org/etiquette.htm</font></tt></a><tt><font size=2><br>
<br>
Check out or update participant bios:<br>
</font></tt><a href="www.members.re-wrenches.org"><tt><font size=2>www.members.re-wrenches.org</font></tt></a><tt><font size=2><br>
<br>
</font></tt>
<br>
<br>