這個沒有要求啊

在UL要求的印字距离规定的范围之类即可。

間隔都是不大於1m

UL没有规定印字的距离。

除非你还印上其他非UL要求的字体，那就有至少1/4寸的距离规定（如果没记错）。

准确的说，758印字间距不可超过40INCH（1.02m）,具体的标准如下：UL758FUIIL22 _L22

As specified in UL 758, the date marking of the cable may be printed
legibly on the cable, in lieu of printing on the tag. Tags will state “See
Surface Print for Manufacturing Date”. The date code shall follow the “month
and year” or “month, day and year” sequence (e.g. “10/01”, “Oct 01”,
“10/31/01” or “Oct. 31, 01”, etc.), and shall be repeated at intervals of no
greater than 40 inches (1.02 meters) unless otherwise stated in the Follow-Up
Service Procedure. The date shall be shown in plain language, not in code.