|
参考UL62中的定义:2 O6 H7 B% Q2 ?
Not-for-hard-usage cord – a cord intended for use with light equipment, classified as the lowest grade
5 t2 ]9 ^9 I% z6 yin mechanical serviceability.
$ n& [8 m; N/ o9 i) aHard-usage cord – a cord intended for use with moderately heavy equipment and for hand-held
, x" Q3 T) n5 @! o( _' z+ j/ [appliances and tools, classified as the medium grade in mechanical serviceability.
9 s- {2 K! j) Y1 R+ uExtra-hard-usage cord – a cord intended for use with heavy equipment and for hand-held appliances/ X# V, O/ x4 B$ q2 E
and tools, classified as the highest grade in mechanical serviceability. |
|