|
这种墙壁安装式的portable 灯具,最重要的是接线盒(底盘)的地方要封起来,安装时不能碰到内部电线,安装时不用工具就可以安装到墙壁。就是说,可以在墙壁先用工具固定一个支架,然后把灯具底盘挂上去,或者用手旋动的螺母固定上去,总之灯具安装在支架上不可以用工具。如果用工具才可以拆装,灯具就要接地,用三芯线才行,以下是条款:
/ c" n0 c" B [$ ]6 d- m68.3.3 A wall mounted unit that has accessible metal parts shall be provided with a grounding attachment plug and comply with the requirements in Grounding and Bonding, Section 36.
+ \$ }) j9 T9 KException: Units are not required to be provided with a grounding attachment plug or comply with the requirements of Section 36 if they cannot be readily adapted for permanent mounting by:
6 v0 i( M1 H6 e" ?: |a) A separable bracket for mounting that does not contain wiring and does not require tools for' P7 }2 q* p" B8 r, q
attachment to the luminaire; or) [$ i8 `/ Y$ r3 |! n1 ^+ u7 \
b) Ring hanger, keyhole slots, or notches in the luminaire that permit removal from the/ P# W- i5 t0 X: I3 @
mounting hardware without the use of tool. |
|