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#23907 03/30/03 01:28 PM
Joined: Feb 2002
Posts: 840
C
Member
I have 2 old spools of THW wire. Is is permissible to use this anymore?

I am thinking about using it feed a tool shed through 3/4 pvc.

If not, I will be taking a run to the scrap yard.

Thanks,
Peter


Peter
#23908 03/30/03 01:35 PM
Joined: Jan 2003
Posts: 4,391
I
Moderator
It is listed in 310.13 as OK for dry and wet locations, there is no reason not to use it.

Remember if you run out more than 1 circuit you will need a ground rod out there.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
#23909 03/30/03 01:41 PM
Joined: Feb 2002
Posts: 840
C
Member
Thanks Bob. It's for a single circuit, so I don't have to worry about the ground rod.


Peter
#23910 03/30/03 05:41 PM
Joined: Mar 2002
Posts: 582
R
Ron Offline
Member
THW is a great conductor as its insulation is more durable (thicker) during a pull through conduit. It is rated for wet environment, as underground installation must be considered.

[This message has been edited by Ron (edited 03-30-2003).]


Ron
#23911 03/30/03 05:43 PM
Joined: Sep 2001
Posts: 806
N
Member
Doesn't "THW" signify THermoplastic, Wet location?

#23912 03/30/03 08:13 PM
Joined: Apr 2002
Posts: 2,527
B
Moderator
The H in THW probably designates it as 75°C insulation, versus TW being 60°C. In a number of areas, it was the default industrial building wire before THWN/THHN was popular. Earlier, THW aced out RHW with improved ease of handling.

[No hepcat electrician would use solid TW if he could get stranded THW.] At one time, TW was available in solid up to 6AWG.




[This message has been edited by Bjarney (edited 03-30-2003).]

#23913 03/31/03 01:25 PM
Joined: Nov 2002
Posts: 174
K
Member
"THW----PVC insulated building wire. Flame-retardant, moisture and heat-resistant, 75deg C. Dry and wet locations."

From Essex Wire&Cable Reference Guide 1997.

[This message has been edited by kale (edited 03-31-2003).]


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