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29.3 Supplementary insulation and reinforced insulation shall have adequate thickness,
4 I% c: l' M3 {) kor have a sufficient number of layers, to withstand the electrical stresses that can be expected
" p# K5 _2 s+ H7 p0 N& O% W8 Wduring the use of the appliance.& w r0 i5 d% `
Compliance is checked/ b0 G3 |6 n3 Q. R
– by measurement, in accordance with 29.3.1, or
. a5 m. w9 p0 {, M: d& B, R– by an electric strength test in accordance with 29.3.2, if the insulation consists of more# H2 q6 n# K4 X$ v6 \
than one separate layer, other than natural mica or similar flaky material, or
1 j5 B$ N7 R L' l/ h3 a' T– by an assessment of the thermal quality of the material combined with an electric strength/ ]" y' m2 V; L6 S- u
test, in accordance with 29.3.3 and for accessible parts of reinforced insulation* |# n' ~; p, _: j* i% `
consisting of a single layer, by measurement in accordance with 29.3.4, or |
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