|
Housing可以当外壳,在UL1598中,条款如下:
% ~) n n) K, Y, d11.4.3 Where a luminaire recessed housing also serves as an enclosure, a top surface that is less than
3 X. G) p6 \) P" }30 degrees from the horizontal and any outer wall that contains any of the parts specified in Clause 5.3.2 shall have:4 l. {, F# @# c! l0 y' \- G
(a) a maximum of two pryout slots, each having a maximum area of 26 mm2 (0.04 in2); and
# }2 ?! c9 S$ y9 N) t0 }(b) ballast mounting slots, each having a maximum unused area of 26 mm2 (0.04 in2). |
|