Scott, I have not heard of surge protection device (SPD) being a requirement for circuit breakers, but I do know that SPDs are required to be after the main over-current protective device of a facility as per NEC 2002, article 285 and UL 1449, regardless if the SPD contains integral fusing or not. In addition, per the NEC, which is clarified in an upcoming IEEE application guide on surge protective device (PC62.72, Working Group 3.6.6), the fault current rating of the SPD must be equal to or greater than the fault current capability of the over-current protective device utilized in front of the SPD.
For SPDs designed for use inside other equipment, over-current protection of the SPD is not required as long as building over-current protection is provided. Surge arrestors, SPDs designed to be placed in front of the main over-current protective device of the facility and on transformer poles, are governed by article 280 of the NEC and UL's OWHX classification. Bryan Cole Director of Engineering Product Safety Officer Emerson Network Power - Control Concepts Binghamton, New York 13902 Phone: 607.724.1352 extension 238 Fax: 607.724.0153 E-mail: bryan.c...@control-concepts.com www.Liebert.com www.Control-Concepts.com www.Edcosurge.com -----Original Message----- From: Scott Barrows [mailto:sbarr...@curtis-straus.com] Sent: Thursday, August 15, 2002 9:40 AM To: PSTC Subject: Circuit Breakers Hi All, Does anyone have any information concerning the requirement for surge protection on circuit breakers that came into effect this June? This may just be for the EU and Laboratory equipment. Regards, Scott ------------------------------------------- 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...@attbi.com 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" ------------------------------------------- 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...@attbi.com 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"
