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3.3.10
0 i- h& a* l9 K- P2 w4 nclass II appliance
) Z' V1 w: D Z. s$ {- {' s* W1 P5 [4 _appliance in which protection against electric shock does not rely on basic insulation only% a# d& L& H% S3 }+ ~: _( `$ j
but in which additional safety precautions are provided, such as double insulation or0 u ?) O& x2 M, A
reinforced insulation, there being no provision for protective earthing or reliance upon
* C% A6 O' e% k* s% x5 @: Winstallation conditions1 _0 }- O4 }4 h+ w- ^( F, X
NOTE 1 Such an appliance may be of one of the following types:% i* c- p6 p! s% O3 R0 u
– an appliance having a durable and substantially continuous enclosure of insulating material which envelops all
: S% [& Y1 t) T( w% I6 Lmetal parts, with the exception of parts, such as nameplates, screws and rivets, which are isolated from live: e! t* t) g/ B k2 l' @; O
parts by insulation at least equivalent to reinforced insulation; such an appliance is called an insulationencased
2 C+ @, T, M4 P+ D3 }% nclass II appliance;/ K3 p! d6 L+ y) h. E* ^1 J
– an appliance having a substantially continuous metal enclosure, in which double insulation or reinforced
( H [ \, m. e! L1 Q) Jinsulation is used throughout; such an appliance is called a metal-encased class II appliance;
: @* h$ z( Z! ? E) D: m: M– an appliance which is a combination of an insulation-encased class II appliance and a metal-encased class II- \+ o2 ]+ J, j2 D% d- A+ f( [
appliance.
. f# o( i5 S- u! d, O. }0 T2 e. `# uNOTE 2 The enclosure of an insulation-encased class II appliance may form a part or the whole of the
# O/ K; k$ L8 F! ?+ m# Osupplementary insulation or of the reinforced insulation.
( F& |2 Y {# INOTE 3 If an appliance with double insulation or reinforced insulation throughout has provision for earthing, it
" i; ]3 t% q6 Z+ xis considered to be a class I appliance or a class 0I appliance. |
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