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0 a; u9 ~" h6 b9 E1 a) x做了几年美标,这个问题貌似我能回复 。 4 C F( v. Y2 n" f
1598标准也是没有说明class2的线可以裸露在建筑内部哦,倒是8750这个标准有条款7.4.1.2,但这个线也是有限制的。这条款ITS那边是接受的;我问过UL,但是没有收到他们的确认回复邮件。5 k- v" D: J3 O1 I, e5 p/ H
7.4.1.2:Power limited circuit wiring that is intended to be routed within a building structure shall be of a, d* B; P, \) l1 M5 K
type suitable for application (e.g. CL2, CL2P, CL3, CL3P, CL3R, CM, CMP, CMR, or PLTC) and in
" U; v8 N0 d j4 f# f! t# U haccordance with Article 725 of the National Electrical Code (NEC), ANSI/NFPA 70 |
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