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<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>Hi William,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>I am unsure what others refer to, I have
used the attached spreadsheet in the past, I think it originates from New
Mexico. I have added a reference to cross sectional area.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>On the issue if resistance, I wonder how
much cable is pure copper these days, we see a lot of cheap cable out of Asia
that very likely has additives. I am guessing that one might need to go back to
the supplier to be sure of resistance if that were possible.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>You will see in the spreadsheet reference
to NEC 2005, chapter 9, table 8 – this is very comprehensive and includes
resistance – among other places, it can be found nicely laid out here…<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><a
href="http://www.buildmyowncabin.com/nec/nec2005_chap9_table8.html">http://www.buildmyowncabin.com/nec/nec2005_chap9_table8.html</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>This is good for DC only I believe.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>I could ask contacts I have in Germany
what they use, I would guess they have it tied down to the last ohm…<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>Hope this helps<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:black'>Regards<br>
Carl Emerson</span></font><font face=Arial><span style='font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Carl:<br>
<br>
You are very welcome. <br>
<br>
I'd be willing to provide a metric chart. I need some information to get
started. In the US, practices are dictated by our NEC which provides the
resistance values for standard wire gauges. By putting the values in the
Code, it gives all parties a reference and (hopefully) avoids arguments about
conflicting data.<br>
<br>
I downloaded the New Zealand Electrical Code of Practice (NZECP 51:2004) and
did not find in it any resistance values. Is this the correct document to
look in? Are resistance values in there and I am just not finding
them? If the values are not in the NZECP, where do professionals in New
Zealand look for the resistance values?<br>
<br>
There is a slight difference in resistance (impedance) between AC and DC
circuits as listed in the NEC. I used the higher values to allow
conformity in all cases. Let me know if there is a different
consideration for AC versus DC in New Zealand.<br>
<br>
Do you know what other Metric based nations use for determining wire resistance
values?<br>
<br>
Thanks in advance.<br>
<br>
William Miller<br>
<br>
<br>
At 04:32 PM 2/3/2013, Carl Emerson wrote:<br>
<br>
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Arial><span style='font-size:
12.0pt;font-family:Arial;color:blue'>Hi William,<br>
<br>
Just a comment on the spreadsheet.<br>
<br>
You have made provision for Centigrade, being friendly to those outside USA.<br>
<br>
It would be nice to have reference to wire cross sectional area in mm˛ as AWG
is foreign to lots of folks from outside the US who reference your site.<br>
<br>
I must say that your making information freely available over the years has
assisted many.<br>
<br>
</span></font><font face=Arial><span style='font-family:Arial'>Regards<br>
Carl Emerson<br>
</span></font><font size=1 color=white face=Arial><span style='font-size:7.5pt;
font-family:Arial;color:white'> <br>
<img border=0 width=628 height=112 id="_x0000_i1025"
src="cid:image001.jpg@01CE02FF.E3A5C110" alt=fcb06a.jpg></span></font><br>
<font size=2 color=white face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:white'> 022 630 9689<br>
<a href="mailto:carl@solarking.net.nz">carl@solarking.net.nz</a><br>
solarking.net.nz<br>
PO Box 305-130,<br>
Triton Plaza,<br>
Auckland 0757 <br>
</span></font><font color=blue face=Arial><span style='font-family:Arial;
color:blue'> <o:p></o:p></span></font></p>
<div class=MsoNormal align=center style='text-align:center'><font size=3
color=blue face=Arial><span style='font-size:12.0pt;font-family:Arial;
color:blue'>
<hr size=2 width="100%" align=center>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
re-wrenches-bounces@lists.re-wrenches.org [<a
href="mailto:re-wrenches-bounces@lists.re-wrenches.org" eudora=autourl>mailto:re-wrenches-bounces@lists.re-wrenches.org</a>]
<b><span style='font-weight:bold'>On Behalf Of </span></b>William Miller<br>
<b><span style='font-weight:bold'>Sent:</span></b> 4 February 2013 12:06 p.m.<br>
<b><span style='font-weight:bold'>To:</span></b> RE-wrenches<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [RE-wrenches] Wire
sizing calculator online<br>
</span></font> <br>
Todd:<br>
<br>
Thanks for the plug. The copy you have is outdated. Here is where
you will find the new and improved version: <a
href="http://millersolar.com/MillerSolar/Resources/_Resources.html"
eudora=autourl>http://millersolar.com/MillerSolar/Resources/_Resources.html</a><br>
<br>
What we created in the Miller Solar wire sizing spreadsheet is an opportunity
to compare the voltage drop for all common wire sizes in one view so you can
evaluate the tradeoffs for various scenarios.<br>
<br>
Questions or comments are appreciated.<br>
<br>
William Miller<br>
<br>
<br>
<br>
At 09:54 PM 2/1/2013, toddcory@finestplanet.com wrote:<br>
<br>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>thank
you... this is useful. do you have william millers calculator too? its attached
in case you dont.<br>
<br>
<br>
<br>
todd<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
On Friday, February 1, 2013 5:23pm, "Solarguy"
<ntrei@1scom.net> said:<br>
<br>
I stumbled onto this wire sizing calculator that gives NEC qualified data. <br>
Wikipedia had a link to it.<br>
<a href="http://www.cablesizer.com/">http://www.cablesizer.com/</a><br>
Jim Duncan<br>
North Texas Renewable Energy Inc<br>
<a href="http://www.ntrei.com/">www.ntrei.com</a> <br>
NABCEP PV 031310-57<br>
TECL-27398<br>
<a href="mailto:ntrei@1scom.net">ntrei@1scom.net</a> <br>
817.917.0527<br>
<img border=0 width=32 height=32 id="_x0000_i1027"
src="cid:image002.jpg@1359784444.2116" alt="NABCEP Logo"><br>
</span></font><br>
<br>
<br>
Sent from Finest Planet WebMail.<br>
<br>
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