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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:/ M, |# ]- \$ Y0 ?, I4 f# ?2 `
68.3.3 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. `1 ?, W- [( ?: ~$ k( Y
Exception: 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:: c+ ]! }7 Y x& l1 I( X
a) A separable bracket for mounting that does not contain wiring and does not require tools for
* C( `+ ]1 I8 a9 l" Z7 ]& P: B( pattachment to the luminaire; or
! T5 s; j- X, fb) Ring hanger, keyhole slots, or notches in the luminaire that permit removal from the k& B! c9 W4 F% w% i# Z
mounting hardware without the use of tool. |
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