I usually reference EN60204, section 14.1.1 when the subject (idea#1 in your email) comes up. "The connection of two or more conductors to one terminal is permitted only in those cases where the terminal is designed for that purpose..."
The second idea you brought up, I am not aware of that being in the standards, however it is in some industry/customer requirements we have to deal with. For example, see Appendix A, item 2.1.9.4 in the SEMATECH Application Guide for SEMI S2-93. Mark Werlwas Product Safety Engineer Lam Research 4650 Cushing Parkway Fremont, California 94538 -----Original Message----- From: Crane, Lauren [mailto:[email protected]] Sent: Tuesday, March 14, 2000 12:07 PM To: '[email protected]' Subject: Number of connections per terminal - chapter and verse? Safety minded folk, I am stumped finding chapter and verse on the following common sense ideas (i.e. in what part of which standard are the following issues addressed). Sometimes the simplest things are the hardest to find! Any corrections would be appreciated. I generally work in the realm of the NEC (NFPA 70), NFPA 79, EN 60204 and EN 61010-1 (aka UL3121). If you know of a related section in one of these I would appreciate the direction. 1. Unless explicitly stated otherwise in the manufacturer's documentation, it is only appropriate to apply one wire to one terminal on a commercial electrical device such as a contactor or circuit breaker. 2. For screw-terminal terminal strips, there should be no more than two ring or spade lugs, this includes jumper straps between barriers. Lauren E. Crane * Eaton Corporation, SEO * Ion Beam Systems Division * Manager - Product Design Safety and Compliance * [email protected] 978.921-9745 ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected] ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
