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29.3 Supplementary insulation and reinforced insulation shall have adequate thickness,! j( C) o$ `% f
or have a sufficient number of layers, to withstand the electrical stresses that can be expected
. J- e0 y: M/ F7 I# `during the use of the appliance.+ n# G6 D1 Q6 y7 p1 Q
Compliance is checked7 k* ?8 ]: s* d4 c# Z" U
– by measurement, in accordance with 29.3.1, or
' `; ]" i8 c, }1 m7 n- e– by an electric strength test in accordance with 29.3.2, if the insulation consists of more
- l7 f" r- V R9 F k- Othan one separate layer, other than natural mica or similar flaky material, or
# S. k$ E7 X8 C2 N2 W2 y2 I! R– by an assessment of the thermal quality of the material combined with an electric strength
# J0 C1 z( e* s8 n7 U6 qtest, in accordance with 29.3.3 and for accessible parts of reinforced insulation
2 W; b+ ]" L2 K7 P+ N" ?6 Lconsisting of a single layer, by measurement in accordance with 29.3.4, or |
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