Solid Wire vs. Stranded Wire?

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Old 08-31-12, 07:04 PM
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Solid Wire vs. Stranded Wire?

Can extending a solid wire circuit with a larger gauge stranded wire be a fire hazard?
 
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Old 08-31-12, 07:06 PM
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Can extending a solid wire circuit with a larger gauge stranded wire be a fire hazard?
Not a hazard. Please give us the details.
 
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Old 08-31-12, 07:15 PM
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My friend was extending an outlet that had a solid 12/2 wire ran to it with a stranded 10/4 wire, the insulation was so thick he could barely get it in the box!
 
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Old 08-31-12, 07:27 PM
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Need more details. Was this 10/4 by any chance a flexible cable like you would see in an extension cord? If yes, then more likely as not it is not the correct type of cable.
 
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Old 08-31-12, 07:38 PM
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The wire being stranded is the only reason it's flexible! The solid 12/2 Romex was flat and gray, the stranded 10/4 cable was thick, round and black!
 
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Old 08-31-12, 07:43 PM
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Thick, round, black cable sounds like type S (with a few more letters) flexible cable and that is not suitable for fixed wiring. Can you read the jacket on the cable? Does it say something like SOOW or SJ or anything similar? Is this in conduit or behind a finished wall or just run in the air?
 
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Old 09-01-12, 11:00 AM
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Yes, the cable says 10/4 SOW and it's ran in open air!
 
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Old 09-01-12, 11:29 AM
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Type SOW is a portable cable; specifically, hard service, oil & water resistant, rubber insulation and 600 volt maximum. It is not suitable for permanent wiring.
 
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Old 09-01-12, 12:30 PM
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The size is okay but not the type of cable.
The solid 12/2 Romex was flat and gray
That sounds like it was not Romex but was UF. If this is outside he should replace the SO cable with UF cable (but not Romex/NM-b) immediately and run the UF in a manner that does not expose it to damage. Please tell us more details about what he is doing and we can better advise him.
 
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Old 09-01-12, 12:42 PM
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A few pictures of the installation would also be helpful.

http://www.doityourself.com/forum/el...-pictures.html
 
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Old 09-01-12, 08:06 PM
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I'll take some pics of it asap, he's on a ranch out in the middle of Cave Creek, AZ! He also wants to add some outlets to his well house so I'll take pics of the existing electric circuits!
 
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