Is This Wire Legal????? - Electrical - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 08-21-2008, 08:36 PM   #1
Newbie
 
Join Date: Apr 2008
Posts: 24
Rewards Points: 10
Default

Is This Wire Legal?????


Hey fella's. Can you take a look at this wire and tell me if it is legal to use for a sub-panel in my barn. I have Plastic conduit ran from the house to the barn. The wire doesn't say THWN, but when I checked on the spec. page it said it is suitable for wet and dry locations.

http://web1.automationdirect.com/adc...N/106101001440



http://web1.automationdirect.com/sta...s/wirethhn.pdf

Advertisement

houstonbrama is offline   Reply With Quote
Old 08-21-2008, 08:39 PM   #2
Licensed Electrical Cont.
 
Speedy Petey's Avatar
 
Join Date: Feb 2004
Location: NY State
Posts: 6,899
Rewards Points: 2,152
Default

Is This Wire Legal?????


If it doesn't say THHN or THWN then what does it say?

Where did you get the spec?

Advertisement

__________________
Sometimes I feel like if I answer any more questions it is like someone trying to climb over a fence to jump off a bridge and me giving them a boost.
Answers based on the 2008 & 2011 NEC.
Speedy Petey is online now   Reply With Quote
Old 08-21-2008, 08:55 PM   #3
Newbie
 
Join Date: Apr 2008
Posts: 24
Rewards Points: 10
Default

Is This Wire Legal?????


Speedy, here is the PDF file on it.
houstonbrama is offline   Reply With Quote
Old 08-21-2008, 08:57 PM   #4
Newbie
 
Join Date: Apr 2008
Posts: 24
Rewards Points: 10
Default

Is This Wire Legal?????


Well that didn't work. Speedy it says it is THHN, suitable for wet or dry locations. The specs are the second link in my original post.
houstonbrama is offline   Reply With Quote
Old 08-21-2008, 09:20 PM   #5
Electrician
 
SD515's Avatar
 
Join Date: Aug 2008
Location: Near Jackson Michigan Area
Posts: 1,451
Rewards Points: 502
Default

Is This Wire Legal?????


From what I saw in that link, my 2 cents would say it should be ok. Though I would have like to see them use 'listed' instead of 'suitable' if it truly is listed for use in wet or dry.
SD515 is offline   Reply With Quote
Old 08-21-2008, 10:44 PM   #6
Licensed Electrical Cont.
 
Speedy Petey's Avatar
 
Join Date: Feb 2004
Location: NY State
Posts: 6,899
Rewards Points: 2,152
Default

Is This Wire Legal?????


Quote:
Originally Posted by houstonbrama View Post
Speedy it says it is THHN, suitable for wet or dry locations. The specs are the second link in my original post.
I saw the two links.
I meant where does it say that? In your previous post you said the wire is not marked.
__________________
Sometimes I feel like if I answer any more questions it is like someone trying to climb over a fence to jump off a bridge and me giving them a boost.
Answers based on the 2008 & 2011 NEC.
Speedy Petey is online now   Reply With Quote
Old 08-22-2008, 12:07 PM   #7
Member
 
Join Date: Jul 2008
Location: Pennsylvania, USA
Posts: 272
Rewards Points: 250
Default

Is This Wire Legal?????


How is the wire marked on the insulation? I believe that's all you can go by, really. If it is only THHN on the wire, I would tend to think it has not been UL listed as THWN and suitable for wet locations.

Here's what I see:

1) I see that the text in the Automation Direct (AD) spec read as follows:

When used as type THHN, the conductor is suitable
for use in wet or dry locations at
temperatures not to exceed 90C or not to
exceed 75C in oil or coolants.

That just doesn't make sense.

2) AD identifies this wire as having the UL listing under UL File Nos. E156879 and E123774. Those file numbers belong to Encore Wire Corporation, as also mentioned in the AD file info.

The Encore THHN/THWN-2 spec says:

When used as type THHN or THWN-2, the conductor is suitable for use in wet or dry locations at temperatures not to exceed 90C
or not to exceed 75C in oil or coolants.


That does make sense.


3) Here is the UL guide on Thermoplastic-insulated wire:

THHN — Indicates a single conductor having flame-retardant and heat-resistant thermoplastic insulation with a jacket of extruded nylon or equivalent material. The wire is rated 90C dry only.

THWN — Indicates a single conductor having flame-retardant, moisture- and heat-resistant thermoplastic insulation with a jacket of extruded nylon or equivalent material. The wire is rated 75C wet or dry. THWN wire suitable for exposure to mineral oil and to liquid gasoline and gasoline vapors at ordinary ambient temperature is marked "Gasoline and Oil Resistant I" if suitable for exposure to mineral oil at 60C, or "Gasoline and Oil Resistant II" if the compound is suitable for exposure to mineral oil at 75C. Gasoline resistant wire has been tested at 23C when immersed in gasoline. It is considered inherently resistant to gasoline vapors within the limits of the temperature rating.
THWN-2 — Same as THWN except that the wire is rated 90C wet or dry.



4) Not sure what's going on here.
Encore's UL File # E156879 is for type MTW.
Encore's UL File # E123774 is for THHN , THHW, THW , THW-2, THWN , THWN-2, and TW.
However, Encore's Catalog idetifies that their Solid is under E123774, and Stranded is under E156879. That's probably misinformation...

Now, that's confusing.


5) Encore also says their THHN/THWN-2 wire will be marked as follows:

STRANDED CONDUCTOR SIZES 14 AWG THROUGH 8 AWG: E156879 (SIZE) AWG TYPE MTW OR THHN OR THWN-2 GR II VW-1 600 VOLTS (UL) OR AWM OR C-(UL) TYPE T90 NYLON OR TWN 75 FT1 DATE/TIME/OPER/QC


6) With all this info, I still have to go back to my original thought that the wire ID dictates what use it has. I could be wrong...


__________________
Willis

Last edited by williswires; 08-22-2008 at 12:09 PM.
williswires is offline   Reply With Quote
Old 08-22-2008, 12:58 PM   #8
Power Gen/RS Engineer
 
Join Date: Jun 2006
Location: Oak Park, Illinois
Posts: 751
Rewards Points: 500
Default

Is This Wire Legal?????


Listen to Willis (nice response BTW). If the wire is not stamped THWN then I would not use it for a wet location, regardless of what the manufacturer claims. I'm doubting that you'd be able to convince your inspector even with printed specifications in hand.

Advertisement

__________________
Well, now, there's what's right and what's right and never the twain shall meet.
BigJimmy is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dryer Grounding??? Traci_howdyadothat Electrical 7 05-27-2008 02:14 PM
Installing Fluorescents in Garage rzrbkpk Electrical 26 04-08-2008 10:00 PM
Stranded wire on screw connections BigJimmy Electrical 7 01-19-2008 03:42 PM
Old house, new light fixture, too many wires Persephonee Electrical 3 01-15-2007 09:58 AM
Does a 6 x 12ga wire nut exist? peeks Electrical 1 10-02-2005 10:58 AM




Top of Page | View New Posts