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29.3 Supplementary insulation and reinforced insulation shall have adequate thickness,
+ e$ ~1 Q3 \, P, r/ l) s8 l. eor have a sufficient number of layers, to withstand the electrical stresses that can be expected# C3 N- U/ E- P, u; v$ ^
during the use of the appliance.' b1 B! D. c; \* \, t# X9 X
Compliance is checked
; H& i/ u @5 N3 ^/ J+ Y+ G2 n– by measurement, in accordance with 29.3.1, or
$ v& W' D' X1 T( R6 E– by an electric strength test in accordance with 29.3.2, if the insulation consists of more3 a5 x% K( \" l6 d( |4 R
than one separate layer, other than natural mica or similar flaky material, or% Z2 ]5 E4 L( N; E# J
– by an assessment of the thermal quality of the material combined with an electric strength
1 D& x V9 x. k" o0 ytest, in accordance with 29.3.3 and for accessible parts of reinforced insulation
0 T5 d! b, {8 Q1 w# |; dconsisting of a single layer, by measurement in accordance with 29.3.4, or |
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