Inherited THW Wire

[Adrien]

Hey all,

My Grandfather was an electrician and I inherited a lot of wire after he passed. I’ve been slowly going through all of it and used quite a bit for my shop wiring projects, mostly Romex and THHN/THWN.

I’ve gotten in to the depths and found a few spools of this TWH wire. Not super familiar with this flavor. Is it something I should hang onto or let it go to scrap?

Thanks,

Adrien

 

[sparky 1971]

Scrap it.

 

[cgrutt]

I would think you could get good money for that. I'd try posting it up on FBM or CL before scraping it.

ETA not electrician if @sparky 1971 says to scrap it may be worth less than I think.

 

[The Cobbler]

few spools of this TWH wire

the cartons show TWH
google indicates that can be used for tracer wire among other things

 

[sparky 1971]

I would think you could get good money for that. I'd try posting it up on FBM or CL before scraping it.

ETA not electrician if @sparky 1971 says to scrap it may be worth less than I think.

It might be worth more than scrap to the right person that won't know what it is. It's been a long time, but I remember trying to pull wire out of new boxes and it was a *******. Now that those boxes are good and weathered, it ain't gonna be any easier and probably a whole lot worse. And, with no "N" designation, as in THHN/THWN, there isn't a nylon jacket that helps cut the friction pulling. It's more like trying to drag a rubber hose through the conduit.

I'm a cheap ******* and have been given rolls of the old style TW romex and used it even though it's a violation. There's no way I would even attempt to use the stuff in the OP, even for myself.

 

[mike93lx]

It's 100% scrap. Only rated for 60 degree C

 

[sparky 1971]

It's 100% scrap. Only rated for 60 degree C

I think it's 75°, no H is 60, one H is 75, and HH is 90. Regardless, it's still scrap.

 

[mike93lx]

I think it's 75°, no H is 60, one H is 75, and HH is 90. Regardless, it's still scrap.

My bad, thanks.

I was getting mixed up with -B

 

[sparky 1971]

My bad, thanks.

I was getting mixed up with -B

Ya wanna know something that is really stupid? The conductors for -B have to have 90° insulation even though it's considered 60. The cheapest way to do that is to use THHN, but since nobody uses THHN anymore, it's probably THHN/THWN which should make it ok to install in conduit in wet locations, but since there is no way to show what it's made of, it's 60° inside wire, unless it's UF and that still has 90° conductors inside of it.

 

[micromind]

THW has fairly thick insulation, only 4 #12s are allowed in 1/2" EMT where 9 #12 THHNs are allowed.

Plus, THW is much more difficult to pull in any type of conduit.

 

[Adrien]

Thanks for all of the responses! I could probably start a whole thread of "What's this for?" with everything I've been sorting through, haha.

Adrien