In a past life I used to flame test wire and cables. Alot of this information can be found in the NEC. If you look in the section concerning Class 1, class 2 and class 3 remote-control, signaling and power-limited circuits, you can find the different wire and cable types and the tests that they must pass to be listed as such. For example a cable that passes the UL1581 vertical tray flame test can be marked with CL2 or CL3.
Jim Sotherden Agency Coordinator/Test Engineer Technology Compliance Team GE Fanuc 804-978-.6224 804-978-5588 fax -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Thursday, October 04, 2001 1:00 PM To: [email protected] Subject: RE: Wiring flame ratings Sorry. I answered too quickly. CL2 cable comes in various types including some that are tested for smoke, such as CL2P for use in air handling spaces. -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Thursday, October 04, 2001 12:27 PM To: [email protected] Subject: RE: Wiring flame ratings 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 ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
