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引用第0楼caballo3157于2007-08-08 07:10发表的 这两段话意思的区别? :1 x$ I8 a, B* c' n# l4 E
在同一标准中有以下两段文字(摘选):0 K. |1 \% F8 W. v( Y
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4.7.7 A lead wire intended for the connection of a grounded power-supply conductor shall be:
8 H8 R% Y4 D% y" O2 K @6 Na) Identified by white or gray color;
8 o/ f, G2 C! A, W7 z+ q% z7 Zb) Marked with the letters, “WHITE,” “WH,” “WHT,” or “COM”, or8 m9 ?4 ]8 U+ e1 j X M) _1 U
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7 J: p% u4 x) f' E# X* e( B+ ]6 ]注意看其中的差别 "grounded" 和 "grounded"
/ p0 F3 ?) q; B% |: g3 ~. M- grounded power-supply conductor 指零线
g' g, h8 p; Z7 w! t- grounding supply conductor 指地线
3 }( p- K9 S: [- c( G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"
7 L# w8 S% Z8 b; p' E, y. q0 F- ungrounded supply conductor 指火线, 具体标准号记不清了.... |
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