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; N& U8 s$ Q! n做了几年美标,这个问题貌似我能回复 。 * f4 y1 d/ m7 F: d. `
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。# v! S7 d0 ~- u0 b8 Q' ]" A
7.4.1.2:Power limited circuit wiring that is intended to be routed within a building structure shall be of a
5 K5 e# Y6 ~' Q$ I% }* K) s7 Ptype suitable for application (e.g. CL2, CL2P, CL3, CL3P, CL3R, CM, CMP, CMR, or PLTC) and in
, _9 Q. B% Y6 M6 c4 x* Saccordance with Article 725 of the National Electrical Code (NEC), ANSI/NFPA 70 |
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