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做了几年美标,这个问题貌似我能回复。 0 n" i5 W, B* k
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。% P' W, _9 e% Q" \% w4 k9 Q+ t
7.4.1.2:Power limited circuit wiring that is intended to be routed within a building structure shall be of a, X1 F, R7 \- T5 U! P$ L
type suitable for application (e.g. CL2, CL2P, CL3, CL3P, CL3R, CM, CMP, CMR, or PLTC) and in
/ L' B5 z" Q! l: \6 h- A. r6 j& iaccordance with Article 725 of the National Electrical Code (NEC), ANSI/NFPA 70 |
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