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求助:
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, |1 p- z8 ^6 L; |8 l" r6 mFor class II construction, conductive liquids that are or may become accessible in normal# b6 x# B. ?, ?5 \4 R
use and conductive liquids that are in contact with unearthed accessible metal parts shall% H1 Z( h, N3 J* B% Q$ ^, F% v& j$ W
not be in direct contact with basic insulation or reinforced insulation unless the reinforced
# q# S& F8 {6 p+ _insulation consists of at least 3 layers.( P# ?0 O- L& F
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4 Q: S& J, P. o! t5 d% ` Q: ~& s水为什么不能和加强绝缘直接接触? 这里隐含是那种结构呢?9 h( x4 X3 B' X' e
有没有哪位能举出个例子?
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