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25.20 The insulated conductors of the supply cord for type Y attachment and type Z
3 E0 I7 @' d# n: @. ~attachment shall be additionally insulated from accessible metal parts by basic insulation9 L- s3 {3 f, i0 H1 A& G0 g
for class 0 appliances, class 0I appliances and class I appliances, and by supplementary" d4 ?% ]9 g3 n; g
insulation for class II appliances. This insulation may be provided by the sheath of the
) t0 O8 ^4 T6 ^4 h p; Jsupply cord or by other means.
* B. k& B% B" {5 P" x1 l( m; lCompliance is checked by inspection and by the relevant tests.
# `# Z$ V, J+ f各位师兄,我对这点一直很疑惑,大家能发表下自己的理解吗?我的理解是如下:
/ n% R' s4 K2 B" p随便举个例子(烤箱),电源线进去不是有一段剥掉外表皮的一截线吗?那个就应该是insulated conductors of the supply cord,不知道我理解的对吗?如果是这样的话,那剥掉外皮的那段就不能碰到接地金属外壳了(class I), 而需要再加一层基本绝缘才能符合上面所说?请问大家我理解的对吗?
1 ^7 w2 j+ O1 y! B1 q如果是这样的话,我又有个疑惑:既然剥掉外皮的电源线不能接触接地的外壳,那我们一般所指的internal wire怎么就可以直接接触带接地的外壳呢?
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