Hello Group: The explanation that I have been given goes as follows.
When a UL inspector goes in to inspect a wire manufacturer they have to do certain measurements on the wire to be sure it meets the requirements for that wire style. If it does not meet the requirements it is not accepted as UL Listed wire (AWM). However, these manufacturers do a run of many thousands of feet of wire which already has the surface markings on it, and can not reasonably be expected to destroy it (presumably reworking the wire is also not an option). So UL allows them to sell it, but they are not allowed to put a Listing label on the spool. Therefore it is possible to buy wire with proper surface markings that does not really meet the UL requirements. Thus the need for Recognized Processed Wire and Recognized Wiring Harnesses from Certified Fabricators who maintain records of the traceability of the wire back to a properly labeled spool (among other things). At least that's what I've been told. Richard Richard Payne Tektronix, Inc. Product Safety Engineering Tel: 503 627-1820 Fax: 503 627-3838 email: richard.pa...@tektronix.com ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
