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Covers, shades and similar parts not having an insulation function and which do not& {% q7 g6 q( w; X0 C6 ~& n
withstand the 650 °C glow-wire test of 13.3.2 shall be adequately spaced from any heated part, M% _7 F% I+ S4 K# v( C
of the luminaire which could raise the material to its ignition temperature. These parts made of) k* C q7 {; r' _- f" s
flammable material shall have suitable fastenings or supporting devices to maintain this spacing.
6 W* f8 G3 p+ xThe spacing from heated parts mentioned above shall be at least 30 mm, unless the material is
G9 D2 [! L5 n7 Aprotected by a screen spaced at least 3 mm from the heated parts. This screen shall comply0 R% |) P' F- P* [
with the needle-flame test of 13.3.1, shall have no holes, and shall have a height and a length- a* l1 l: j0 y8 o8 s2 G. ?9 N
at least equal to the corresponding dimensions of the heated parts. A screen is not required in
" |8 h* j0 M1 d( p" A7 _cases where the luminaire provides an effective barrier to burning drops |
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