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Joined: Feb 2002
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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
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Joined: Jan 2003
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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
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Thanks Bob. It's for a single circuit, so I don't have to worry about the ground rod.
Peter
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Joined: Mar 2002
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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
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Joined: Sep 2001
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Doesn't "THW" signify THermoplastic, Wet location?
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Joined: Apr 2002
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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).]
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Joined: Nov 2002
Posts: 174
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"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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