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: O+ Y; W% T8 s0 [' i( B) t" g" U! Y* f做了几年美标,这个问题貌似我能回复。
. p& F; }* Z+ A1 M% a1598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。( B- ~" G; @7 f+ t! ?& t3 k
7.4.1.2:Power limited circuit wiring that is intended to be routed within a building structure shall be of a
. o1 d7 G7 g! y3 c& p9 `type suitable for application (e.g. CL2, CL2P, CL3, CL3P, CL3R, CM, CMP, CMR, or PLTC) and in
; t4 K: y6 Y! E& J! waccordance with Article 725 of the National Electrical Code (NEC), ANSI/NFPA 70 |
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