> Is anyone familiar with any requirement that limits the number of ground > terminations on a single stud?
Depends on type of equipment and country of application. But for example, IEC 60204-1 & EN 60204-1 (Electrical equipment of machines...) 14.1.1 "The connection of two or more conductors to one terminal is permitted only in those cases where the terminal is designed for that purpose. However, only one protective conductor shall be connected to one terminal connecting point." (This in turn generates a somewhat devious debate about how many "terminal connecting points" can you get on one ground (earth) stud. Or was that angels on the head of a ground pin?) Whereas, the US std with roughly similar scope and (since 2002) similar clause numbering, ANSI/NFPA 79, merely states, "14.1.1.3 Terminals for more than one conductor shall be so identified." PS: Before anyone asks, "identified" is defined in NFPA 79 to be the same as in NFPA 70 (NEC) viz, "Identified (as applied to equipment). Recognizable as suitable for the specific purpose, function, use, environment, application, and so forth, where described in a particular code or standard requirement. [70:100]" best regards, glyn TUV Rheinland of North America, Inc. Product Safety & -Quality Industrial Machinery Division (Chicago Office) Glyn R. Garside Senior Engineer 1945 Techny Rd, Unit 4 NORTHBROOK, IL 60062-5357, USA Tel (847)562-9888 ext 25 email [email protected] http://www.us.tuv.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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
