Fw: New PV cable Specification. [RE-wrenches]

[Allan Sindelar]

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From: "John Wiles" <jwiles at nmsu.edu>
Sent: Wednesday, April 27, 2005 12:56 PM
Subject: New PV cable Specification.


New PV Cable Specification

Underwriters Laboratories (UL) is in the process of writing a new 
specification for a single-conductor cable that will meet the 
requirements for cables on ungrounded PV systems as allowed in 
Section 690.35 of the 2005 NEC.  It will also meet the requirements 
of section 690.31(B).

At this time, the draft specification may call for a "Photovoltaic" 
cable that is physically tougher than USE-2, will have more sunlight 
resistance than USE-2 (700 hours vs 350 hours of accelerated UV 
exposure testing), and may be marked "Sunlight Resistant".  It may 
have the flame retardant additive and may also be marked RHW-2 that 
will enable it to be used in conduit inside buildings.

For those wrenches involved in various commercial and industrial 
electrical systems, have you come across any cables that have an 
insulation that has a rodent repellant as part of the mix?  We may 
need this based on rodent (squirrels, rats, etc.) damage to cables in 
several parts of the country.  However, we don't want to run afoul of 
any EPA or OSHA regulations on such materials.  If you have leads on 
such a cable, please e-mail them to me at jwiles at nmsu.edu.

Thanks
-- 
If I can provide further information, please do not hesitate to call, 
e-mail or fax me.

John

John C. Wiles,  Program Manager
Southwest Technology Development Institute, New Mexico State University
505-646-6105      505-646-3841 (FAX)   http://www.NMSU.Edu/~tdi
SWTDI/NMSU
3705 Research Drive
Box 30001/MSC 3 SOLAR
Las Cruces, NM 88003-8001

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