|
11.4.3 Where a luminaire recessed housing also serves as an enclosure, a top surface that is less than
, W2 i* i* L3 P' k3 R$ n30 degrees from the horizontal and any outer wall that contains any of the parts specified in Clause 5.3.2
) S }2 t, c8 N) ?$ R- Eshall have:' q( ^) V) b1 q' ^
(a) a maximum of two pryout slots, each having a maximum area of 26 mm2 (0.04 in2); and
5 N F; R) n$ E P2 ^(b) ballast mounting slots, each having a maximum unused area of 26 mm2 (0.04 in2).. \ o2 i' D+ B0 r4 y& n/ R* N
" X, E6 ?, e) X% }/ u与水平面小于30度的顶部表面是什么意思 意思就是housing最上面的帽子?8 q+ r0 N+ j* q/ L8 ~
|
|