[RE-wrenches] #10 THWN-2

Peter Parrish peter.parrish at calsolareng.com
Fri Jul 23 10:09:08 PDT 2010


The dash-two, as an appendage to THWN indicates that the wire, normally
rated for dry and wet locations and 75 deg C, is now rated dry/wet up to 90
deg C.

- Peter


Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parrish at calsolareng.com  
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885

 
________________________________________
From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Mick Abraham
Sent: Friday, July 23, 2010 9:52 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] #10 THWN-2

I'm sorry to broadcast my ignorance, but:

Could someone explain to me the significance of the -2 marking? Reply
off-list if you wish to save bandwidth...but other List members may also be
wondering... 

Thanks, 

Mick Abraham, Proprietor
www.abrahamsolar.com

Voice: 970-731-4675

On Fri, Jul 23, 2010 at 10:48 AM, Nick Soleil <nicksoleilsolar at yahoo.com>
wrote:
I have specified THWN-2 for years, but occasionally will not be able to
source it!

Sent from my iPhone

On Jul 23, 2010, at 11:37 AM, "Peter Parrish"
<peter.parrish at calsolareng.com> wrote:
We went through a similar problem with some beach communities here in SoCal.
Because of the high humidity (all winter and summer mornings) they wanted
THWN-2 for all conduit runs (as well as PVC instead of EMT). At first we
were charged a premium for THWN-2 compared to THHN. But then we found a
source at All Phase Electrical Supply Burbank CA (a part of CED) for THWN-2
#10 stranded @ $162.40/k-ft. Brand is En(m?)core Wire. THWN-2 listing is
printed on the insulation.
 
- Peter
 
Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parrish at calsolareng.com  
Ph 323-258-8883, Mobile 323-839-6108, Fax
323-258-8885                                                              
                                    
 
 
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