All Annex NAA of UL60950-1, clause 4.7.3.1 has an additional requirement for equipment installed in "space used for environmental air", such as may be found in ceiling voids.
Requirement Equipment evaluated for installation in space used for environmental air as described in Section 300-22(C) of the National Electrical Code, ANSI/ NFPA 70, and Sections 2-128, 12-010(3) and 12-100 of the Canadian Electrical Code, Part 1, CSA C22.1 shall be marked or provided with installation instructions indicating suitability for installation in such locations. Equipment that is not evaluated for installation in areas covered by Section 300-22(C) of the National Electrical Code, and Sections 2-128, 12-010(3) and 12-100 of the Canadian Electrical Code, Part 1, CSA C22.1 shall not be provided with this marking, nor shall its installation instructions describe such installation. Labelling Suitable for use in environmental air space in accordance with Section 300-22(C) of the National Electrical Code, and Sections 2-128, 12-010(3) and 12-100 of the Canadian Electrical Code, Part 1, CSA C22.1. Now, non-metallic enclosures of such equipment have to assessed against UL2043 but metallic enclosures are exempt from UL2043, so: * How would a unit with a metallic enclosure be evaluated - is it by inspection? * Who much do the assessment - can it be the manufacturer, or must it be someone acceptable to local AHJ (e.g. an NRTL) Thanks Charlie Charlie Blackham Sulis Consultants Ltd Mead House Longwater Road Eversley RG27 0NW UK Tel: +44 (0)7946 624317 Email: [email protected]<mailto:[email protected]> Web: www.sulisconsultants.com<https://outlook.hslive.net/owa/redir.aspx?C=02be3bf3e3a544d1bdf7b6c99fbd12f5&URL=http%3a%2f%2fwww.sulisconsultants.com%2f> Registered in England and Wales, number 05466247 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
