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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:
}9 [ X- w+ ?" {, Y3 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 36.1 z8 v/ X0 D2 s8 r/ K$ A. z9 p R
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:
( k9 \; Y/ u6 na) A separable bracket for mounting that does not contain wiring and does not require tools for
9 [$ F/ [) |# Y* ^( {- \attachment to the luminaire; or
, ~+ P' l# q% Yb) Ring hanger, keyhole slots, or notches in the luminaire that permit removal from the
$ c" R' H- l+ U Bmounting hardware without the use of tool. |
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