VW-1 rated wire is tested for flammability while CL-2 cable is tested for toxic smoke emissions.
-----Original Message----- From: Ehler, Kyle [mailto:[email protected]] Sent: Thursday, October 04, 2001 11:09 AM To: [email protected] Subject: Wiring flame ratings If I may ask a back to basics question. The country specific agency flame ratings for insulated wiring seem to not be harmonized. Some materials such as limited current (signal) interconnect wiring are marked as VW-1 while others are marked with FT-1,2,3,4 or CL-2. VW nomenclature is a UL rating for wiring, while FT-x is a Canadian rating and test method, and CL2 is a NEC rating. Have I left any out? (;^) Is there such a thing as a cross reference table that indicates which is equivalent (and per application?) ? For example, FT4 = VW-1 = CL2 for vert./horiz. raceway? Inquiring minds... Kyle Ehler KCOIQE < mailto:[email protected] <mailto:[email protected]> > Assistant Design Engineer LSI Logic Storage Systems Div. 3718 N. Rock Road U.S.A. Wichita, Kansas 67226 Ph. 316 636 8657 Fax 316 636 8321
