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3.3.10
8 ?: t/ x z# T& ^" n0 eclass II appliance
F9 |; i2 O2 }2 \7 D! X& bappliance in which protection against electric shock does not rely on basic insulation only4 \ X. S5 V5 X+ J1 {9 q
but in which additional safety precautions are provided, such as double insulation or
% ]. I# C$ w# ?9 i2 ?' _reinforced insulation, there being no provision for protective earthing or reliance upon* K3 w3 e( h" m) c( t
installation conditions- I" i; a3 R: @3 L
NOTE 1 Such an appliance may be of one of the following types:
0 M K/ Z+ l, C8 o0 i' A' e' \– an appliance having a durable and substantially continuous enclosure of insulating material which envelops all" s2 l! q1 u( }
metal parts, with the exception of parts, such as nameplates, screws and rivets, which are isolated from live
" }8 |- N/ y4 Z" f kparts by insulation at least equivalent to reinforced insulation; such an appliance is called an insulationencased
. T9 W7 f' @2 y {; I5 t Gclass II appliance;
0 c1 R$ y+ a5 K9 b4 B/ k& p– an appliance having a substantially continuous metal enclosure, in which double insulation or reinforced8 s" [/ K/ }# A
insulation is used throughout; such an appliance is called a metal-encased class II appliance;
7 p# ~7 ?. l. H P% T$ u– an appliance which is a combination of an insulation-encased class II appliance and a metal-encased class II
8 ?* C, E1 [8 \/ u- N+ wappliance.
- A# a+ e* s% C* N% @) TNOTE 2 The enclosure of an insulation-encased class II appliance may form a part or the whole of the: ?" G, X9 D8 M+ c' K! \
supplementary insulation or of the reinforced insulation.
& m: C9 t0 |. x- Z3 VNOTE 3 If an appliance with double insulation or reinforced insulation throughout has provision for earthing, it
5 l' {9 l0 i2 B" w! K$ Zis considered to be a class I appliance or a class 0I appliance. |
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