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本帖最后由 stey 于 2013-11-14 17:05 编辑 $ `, x# D& A- J
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这种线一般是低压线,(更正:电压具体看标准Cables for Class 3 circuits are rated for 300 volts but are not so marked. Cables for Class 2 circuits do not have a voltage rating. See 46.1 (h).). o: f. ], s% [4 Y; ~
Y; ?/ l4 i$ L6 z, x. e% LUL 13:2007 有功率限制的电路电缆Standard for Power-Limited Circuit Cables
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Power-Limited Circuit Cables8 i1 _( p# g+ L9 S! c) E3 f
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UL 13
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1.1 These requirements cover 60 - 250°C (140 - 482°F) single- and multiple-conductor power-limited circuit cables for use as fixed wiring within buildings (some are also marked for direct burial) principally for Class 3 and Class 2 circuits as described in Article 725 and other applicable parts of the National Electrical Code (NEC). Cables covered by these requirements are:
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- z; D, I. X1 X9 f; wa) Types CL3P and CL2P (plenum cables),
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* f& L9 V& q' B! e4 B; i/ {2 ` wb) Types CL3R and CL2R (riser cables),3 L) t! C7 b( U- v
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c) Types CL3 and CL2 (commercial cables for other than plenum, riser, or tray uses),
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d) Types CL3X and CL2X (cables for limited use), and7 S' I9 T$ r' O8 X8 J
% F- ?2 g& j0 Z$ U( S. x& We) Type PLTC (cable for non-plenum and non-riser Class 3 and Class 2 circuits in general and in trays). |
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