|
Housing可以当外壳,在UL1598中,条款如下:
- V0 o0 J: h8 b6 V4 A' h11.4.3 Where a luminaire recessed housing also serves as an enclosure, a top surface that is less than
4 g' u: q' @$ t% M8 f1 M- p30 degrees from the horizontal and any outer wall that contains any of the parts specified in Clause 5.3.2 shall have:# Y& j: l! F0 L6 a# h
(a) a maximum of two pryout slots, each having a maximum area of 26 mm2 (0.04 in2); and7 u) ~0 q( A: P7 ]* w% i
(b) ballast mounting slots, each having a maximum unused area of 26 mm2 (0.04 in2). |
|