Nmd or nmwu to cord cap?

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  #1  
Old 09-24-15, 08:29 PM
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Nmd or nmwu to cord cap?

Why is it that you cannot connect nmd to a cord cap but flexible cord is OK?
It's all connected to the same electrical source?
Whether it's nmd or flex - it could still catch fire.
 
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Old 09-24-15, 08:32 PM
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NM-b is not rated for use as a flexible cord so no cord cap. Why do you want to use NM-b?
 
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Old 09-24-15, 08:51 PM
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It all has to do with how the product is listed.
 
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Old 09-25-15, 06:02 AM
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I'm just interested in why rather than to actually use it.
It's all same guage copper wire so whether you connect it to a screw on a receptacle or a screw on a cord cap, what difference does it make?
Yes, the junction box contains fire risk but even a cord cap plugged into a receptacle could burn and that's outside the junction box.
 

Last edited by qwertyjjj; 09-25-15 at 06:35 AM.
  #5  
Old 09-25-15, 07:11 AM
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The jacket of NM-b/NMD is not very durable and would not handle up to the use like a cord will. Also NM-b/NMD normally has solid conductors while cords have stranded. Solid wires would eventually break if bent too many times.
 
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Old 09-26-15, 04:20 PM
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If it was fixed so the cable was never bent then presumably it would be OK?
I suppose code doesn't allow it because the assumption is that a cable external to the walls will be moved around at some point?

On that note, is there an external flexible cable rated for wet/damp - extension cable maybe?
 
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Old 09-26-15, 05:03 PM
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U.S. designations would be SOW or SJOW or SOOW. I don't know the Canadian equivalent.
 
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