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看看I类灯具的定义,老老实实外壳接地吧。/ O5 b e8 A( G4 i3 `7 s0 y
class I luminaire
2 ]2 T" F2 F2 b' V+ t& H+ Oluminaire in which protection against electric shock does not rely on basic insulation only, but
8 `1 i& x# ]% u, {7 Rwhich includes an additional safety precaution in such a way that means are provided for the
) S& z1 L% S, V/ L, e3 Fconnection of accessible conductive parts to the protective (earthing) conductor in the fixed, W! ]3 J; \" S- }) H2 i
wiring of the installation in such a way that accessible conductive parts cannot become live in
( x7 b) C" e6 d& Rthe event of a failure of the basic insulation4 N8 |& Y, J5 H; V/ ~8 O& `
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