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J哥,翻出你这个旧帖子了。我的1598资料还在整理当中,这部分信息我也会加进去。我查找了一下资料,把一些信息列在这里供你参考一下。
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5 M6 Z8 t- K& l那查看了NFPA 70中关于灯具的要求410章节,发现tap conductor就是固定连接到灯具内部端子的导线,用于连接到安装地点的电源出现盒的灯具导线,在这里姑且叫做“分流导线”。根据1598的要求,嵌入式灯具的tap conductor要求要有线管保护。但根据NFPA 70的要求来看,分流导线必须要有线管保护。; N% \/ G# r* m0 X4 `$ Y
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下面是NFPA 70中关于tap conductor的摘录:, @% H' T+ V( j% C) i
410.117 Wiring.
0 d8 w* N4 `/ s$ B3 C0 a(A) General. Conductors that have insulation suitable for the temperature encountered shall be used.
6 l2 E# L, O' K1 O(B) Circuit Conductors. Branch-circuit conductors that have an insulation suitable for the temperature encountered: _; ~5 I' l, O2 z p- |
shall be permitted to terminate in the luminaire.5 n& _9 g! ?& }$ H& Y4 N1 M
(C) Tap Conductors. Tap conductors of a type suitable for the temperature encountered shall be permitted to run from
9 b9 p1 Z Q2 ?- D& @9 Nthe luminaire terminal connection to an outlet box placed at least 300 mm (1 ft) from the luminaire. Such tap conductors0 B% G; ]1 c: F1 Q' l& d
shall be in suitable raceway or Type AC or MC cable of at least 450 mm (18 in.) but not more than 1.8 m (6 ft) in length.8 g. B0 `4 D: C! ?* f5 f
1 B6 @3 G3 M6 v; q3 k另外,灯具允许使用软线(即符合绝缘要求的用于给电器具供电的电源线)方式进行连接,根据1598,软线连接是不需要用导管保护的,而根据NFPA 70下面的条款,软线连接的灯具,软线的输入端必须有插头、连接器、符合要求的布线系统,或者不带插头、连接器时要带出现盒盖子+线管。8 I. J. O, Y0 k1 c; r
/ r1 x) M- k9 L5 G( Q下面是NFPA 70关于软线连接的灯具的部分要求:" ~7 `' u4 S/ L( j
410.62 Cord-Connected Lampholders and Luminaires.2 E, K8 K" ~3 b" ]
(C) Electric-Discharge and LED Luminaires.
5 \/ N& s' f7 N$ L, u(1) Cord-Connected Installation. A luminaire or a listed assembly shall be permitted to be cord connected if the following conditions apply:- @- h: @: J& O' J% s& [; t' |& ]
(1) The luminaire is located directly below the outlet or busway.3 K1 @% x$ N5 L. Z& s
(2) The flexible cord meets all the following:7 G4 r9 X/ L U5 ]
a. Is visible for its entire length outside the luminaire
3 t$ G# Q" \! s w2 `b. Is not subject to strain or physical damage
: h% X9 k: {: c# l' W3 ec. Is terminated in a grounding-type attachment plug cap or busway plug, or is a part of a listed assembly incorporating a manufactured wiring system connector in accordance with 604.6(C), or has a luminaire assembly with a strain relief and canopy having a maximum 152 mm (6 in.) long section of raceway for attachment to an outlet box above a suspended ceiling.+ g) O! _1 F# e8 {: \7 ~' l
那么比对灯具的软线和分流导线的区别,软线安装灯具中符合要求的软线不需要导管保护,但是软线一般带有插头,软线须含地线。而分流导线则不带插头,必须有线管保护,线管和分流导线连接到安装场所的电源出线盒上。
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