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torkyaagba
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Post subject: SKM - #3 AWG Cable unavailable in Library  Posted: Thu Apr 12, 2012 9:18 am |
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Joined: Mon Jan 24, 2011 10:54 am
Posts: 1
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The list of cable sizes in the SKM PTW does not include #3 AWG.
Anyone have any idea why?
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geh7752
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Post subject: Posted: Fri Apr 13, 2012 10:44 am |
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Joined: Sat Jun 07, 2008 5:11 pm
Posts: 143
Location: Connecticut
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#3 awg wire (and cable) isn't a standard size and not carried by suppliers. It has to be special ordered if you really want it... Options are #4 or #2 awg is standard and cost less than special ordering #3 awg. In my 37 years in the trade I've only seen #3 awg once in the field. It was special ordered by a PE that had no idea what he was doing.
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JJH
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Post subject: Posted: Mon Apr 16, 2012 6:10 am |
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Joined: Wed Jan 28, 2009 2:19 pm
Posts: 74
Location: Georgia
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We see #3 AWG routinely when gathering data for arc flash studies. Our local suply house also carries it at a price between #4 and #2. It is perfect for 80 amp circuits. It is included in the EasyPower library.
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mdy
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Post subject: Posted: Mon Apr 16, 2012 6:57 am |
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Joined: Wed Aug 31, 2011 5:26 am
Posts: 11
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I've been an electrician for over 20 years and I've seen - and used - #3 often. My understanding is - and feel free to correct me - SKM uses conductor properties from the RED BOOK, however the RED BOOK does not list properties for #3. The NEC DOES contain the property values for #3, BUT won't let you reuse them for publication (copyrite), or SKM won't pay to use them. Thus SKM does not have #3 in the library.
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engrick
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Post subject: Posted: Mon Apr 16, 2012 6:59 am |
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Joined: Fri Apr 15, 2011 7:43 am
Posts: 179
Location: Colorado
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SKM does have #3 and #14 - I have gotten it from them. They also have GGC cable that I got from the manufacturer. The problem is most wire manufacturers do not have the required data readily available. The GGC cable took a couple of weeks to get. The file is attached as a ver 7 library.
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mdy
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Post subject: Posted: Mon Apr 16, 2012 7:05 am |
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Joined: Wed Aug 31, 2011 5:26 am
Posts: 11
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engrick, hey thanks a bunch! The answer I gave actually came from SKM - all be it some years ago - and I can't remember "verbatum". Thanks again for the lib!
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BCR_1962
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Post subject: Posted: Mon Apr 16, 2012 7:55 am |
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Joined: Tue Feb 16, 2010 7:59 am
Posts: 21
Location: Minneapolis, MN
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torkyaagba wrote: The list of cable sizes in the SKM PTW does not include #3 AWG.
Anyone have any idea why? If you link to the TECK 90 conductors you have a #3 in the library. I don't understand why SKM does not include it in the standard NEC table 310 libraries. They have heard from a lot of us about this. I think it may be because #3 is not recognized by IEEE redbook. Bob Ragsdale, P.E.
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geh7752
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Post subject: Posted: Tue Apr 17, 2012 12:57 pm |
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| Sparks Level |
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Joined: Sat Jun 07, 2008 5:11 pm
Posts: 143
Location: Connecticut
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Etap doesn't have #3 or 300 mcm. I simply used the "user library" function and created wire library from NEC.
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tad
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Post subject: Re: SKM - #3 AWG Cable unavailable in Library Posted: Tue Sep 24, 2019 6:14 am |
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Joined: Tue Sep 24, 2019 6:06 am
Posts: 1
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Can someone post a SKM lib file with the #3 AWG wire?
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arcad
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Post subject: Re: SKM - #3 AWG Cable unavailable in Library Posted: Fri Oct 11, 2019 8:06 am |
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Joined: Wed Jun 10, 2009 5:00 pm
Posts: 271
Location: Toronto
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Not sure about SKM but #3 AWG cable is included in Short Circuit Analytic built-in library in different forms and shapes (voltage rating, material, configuration and conduit type). You can pull out the cable resistance and reactance values from SCA free demo and add these to SKM library. The values are from IEEE Standard 141
_________________
Michael Furtak, C.E.T.
http://arcadvisor.com
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