THWN Wire-Where To Buy

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  #1  
Old 11-03-19, 05:13 AM
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THWN Wire-Where To Buy

Stopped by 2 electrical supply locations Friday looking for 12GA THWN wire and neither had it or ever carried it and steering me to THNN wire.

This is for supplying power to my new shed via underground conduit.

This was same place where I purchased my wire for my spa a couple years ago, now I'm wondering what I actually have.

Maybe it's just the 12GA, I did not inquire about other gauges!

Is it that rare?

Will make a few calls next week!
 
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Old 11-03-19, 05:58 AM
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Most THHN are also rated for THWN.
Check the marking on the cable.

Home depot has them has well.
 
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Old 11-03-19, 09:15 AM
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Home depot has them has well.

As does Lowes, Menard's and all the Ace and True Value stores I have ever been in. The key is the dual rating; THHN/THWN, as Iambition stated.
 
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Old 11-03-19, 09:43 AM
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Why not UF-B cable instead of THWN?
 
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Old 11-03-19, 09:49 AM
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Pulling UF in conduit can be a real pain in the you know what! When using conduit it is always better to use individual conductors.

All THHN wire I have seen has about 3 or 4 ratings including THWN.
 
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Old 11-03-19, 10:11 AM
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Don't know how close either of these are for you Marq, but if I can't find it at the usual places my next calls are Gross Electric and/or Graybar.
 
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Old 11-03-19, 10:55 AM
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My thinking was to just trench and bury the UF-B no conduit involved.
 
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Old 11-03-19, 12:04 PM
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My thinking was to just trench and bury the UF-B no conduit involved.
Its an existing conduit, the shed was built on the slab that the swim spa used to sit, I have already got the conduit into the interior so no turning back!

Couple more places near by will contact them!
 
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Old 11-04-19, 03:42 AM
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Yes, if you go to the Home Depot and look at the THHN solid 12 gauge that comes in a spool the packaging itself (print on the package) does not mention THWN. You have to look thru the clear plastic wrap on the spool directly at the insulation on the wire and there you will see THHN/THWN. I have yet to find any of the wire like that which states on the package THWN. Notice in the "specifications" it states wet/dry. I don't always trust what they state in the specifications for other products as I have found errors but I do know that THWN is printed on the wire insulation itself, you just have to have eagle eyes to see it. Why it is not on the printed packaging I don't know.
 
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