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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:
( x& [6 `' Q) ?1 z( i$ P68.3.3 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.
X E3 X [" j8 tException: 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:
, x' x5 o% u) H* \6 S Aa) A separable bracket for mounting that does not contain wiring and does not require tools for! X. [9 b2 [" }* n& g2 {. F( p
attachment to the luminaire; or2 @+ A d: a+ _" @
b) Ring hanger, keyhole slots, or notches in the luminaire that permit removal from the
( ?7 S& C( ~: x$ ~) Vmounting hardware without the use of tool. |
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