Enclosure ratings 7, 8, 9 and 10 are for hazardous locations.
An enclosure rating of NEMA 7 is defined as "Enclosures constructed for indoor use in hazardous locations classified as Class I, Division 1, Groups A, B, C, or D as defined in NFPA 70." NEMA 7 defines an enclosure that will contain an internal explosion without causing an external hazard. The full list of NEMA ratings is available at the NEMA web site: http://www.nema.org/engineering/papers/enclosure.html Ted Eckert Regulatory Compliance Engineer American Power Conversion Corporation [email protected] The items contained in this e-mail reflect the personal opinions of the writer and are only provided for the assistance of the reader. The writer is not speaking in an official capacity for APC nor representing APC's official position on any matter. Andrew Wood <Andrew.Wood@lan To: "'emc-pstc'" <[email protected]> dinst.com> cc: Sent by: Subject: Request for help RE: NEMA 7 owner-emc-pstc@i eee.org 04/25/01 08:46 AM Please respond to Andrew Wood Colleagues I have been contacted by one of our sales engineers who has a request to quote for supplying a product suitable for hazardous areas meeting NEMA 7 rating. He has already spent some time surfing the web. My NEMA to IP rating conversion chart only lists NEMA 1, 2 3, 3R, 3S, 4, 4X, 5, 6, 6P then jumps to 12,12k & 13. I have been unable to get any further myself on the web. It would be appreciated if anybody could tell me whether NEMA 7 is probably an error in the request, or is it a genuine but maybe little used rating that needs more searching to track it down. Thanks in advance for any help. Andy. This e-mail and its contents may be confidential, privileged and protected by law. Access is only authorised by the intended recipient. The contents of this e-mail may not be disclosed to, or used by, anyone other than the intended recipient, or stored or copied in any medium. If you are not the intended recipient, please advise the sender immediately. ------------------------------------------- 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: http://www.rcic.com/ click on "Virtual Conference Hall," ------------------------------------------- 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: http://www.rcic.com/ click on "Virtual Conference Hall,"
