本帖最后由 AASTAR 于 2011-1-31 19:58 编辑 , q& g' n& l8 A# R- L+ I9 `. B+ n
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you think you are a smart ***, you want to help, you got to do sth instead of playing 4 h9 a' c$ Z6 B) u& _trick.
本帖最后由 AASTAR 于 2011-1-31 19:56 编辑 $ }: _) F* I R3 b
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30-400 Wiring of luminaires . M9 ?% m9 X" }6 KAll electrical wiring on or within a luminaire shall be 6 H, r8 r# Z& u9 F(a) neatly arranged without excess wiring;8 _) M( k" x% R% }! p
(b) not exposed to mechanical injury; and+ F3 ~- t) Q- C' S1 i3 S( q& k" D
(c) arranged so that it is not subjected to temperatures above those for which it is rated. 4 x: x( I+ c4 ^30-402 Colour coding . k" d- y7 j- C, x ?( ZNotwithstanding the requirements of Sections 0, 4, and 10 with regard to the colours used for distinguishing and identifying conductors, a continuous-coloured tracer in the braid of an individual braided conductor shall be permitted for the supply conductors of a luminaire, the colour of the tracer being black, white, and green for the ungrounded, identified, and bonding conductors respectively. / d. H: e) q8 {3 N, D2 j30-404 Conductor insulation3 o+ `2 G; B7 w2 s. B
Luminaires shall be wired with conductors at least No. 18 AWG, having insulation suitable for the voltage and temperatures to which the conductors may be subjected.* q; R* `! a7 A. K I
30-408 Wiring of ceiling outlet boxes 0 e" T7 ~2 U J(1) Branch circuit conductors having insulation suitable for 90 °C shall be used for wiring of ceiling outlet boxes on which a luminaire is mounted, except for boxes in wet locations where Type NMW or NMWU cables are used. 4 Q) _; Y- w0 _; y1 T(2) For purposes of compliance with this Rule, the ampacity of 90 °C wire shall be limited to the ampacity of 60 °C wire.