Quote:
引用第0楼caballo3157于2007-08-08 07:10发表的 这两段话意思的区别? :
在同一标准中有以下两段文字(摘选):
4.7.7 A lead wire intended for the connection of a grounded power-supply conductor shall be:
a) Identified by white or gray color;
b) Marked with the letters, “WHITE,” “WH,” “WHT,” or “COM”, or
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注意看其中的差别 "grounded" 和 "grounded"
- grounded power-supply conductor 指零线
- grounding supply conductor 指地线
在结合原文看看, 与颜色标示是否对应上了. 在很多标准中还会以下面的描述表示 "火线"
- ungrounded supply conductor 指火线, 具体标准号记不清了....