如题

查看了标准，确定不了成品是否要求测试节距，请叫各位大侠能否回答。

多谢了。

导体有，芯线不太清楚。

标准都规定了绞距，怎么会不测试呢？

如果我没理解偏，楼主问的是成品电线的导体绞距会不会测试的问题吧，怎么有人扯上芯线绞距了呢？楼上的不要误导大家啊！

如果楼主问的是导体绞距的问题,

那是要测的,

如UL电器布线的ULIPI和监督检查都会查到.

芯線絞合也有要求的

UL 758

12.4 The circuit conductors in a round cable shall be cabled with a length of lay that is uniform throughout
the length of the cable in compliance with Table 12.1. Grouping of the circuit conductors into pairs, triads,
quads, and other precabled subassemblies is not required.

Table 12.1
Length of lay of insulated conductors and precabled groups for cables rated greater than 30
volts

Number of insulated conductors in cable                      Maximum length of lay of insulated conductors and
precabled groupsa
2                                                                                           30 times the finished insulated conductor diameterb
3                                                                                            35 times the finished insulated conductor diameterb
4                                                                                            40 times the finished insulated conductor diameterb
5 or more                                                                             15 times the calculated diameter of the overall assembly. In a
                                                                                               multiple-layer cable, the length of lay of the conductors in each
                                                                                             of the inner layers of the cable is not specified.

linyun:
我司现在申请UL758.代理公司让我们用单导体1/0.813做样品，不知这个是否容易通过？请各位指点。

初次UL电子线认证 都是 20AWG的裸铜实心导体生产电线送样的,也就是你所说的 1/0.813,只要材料别用差的,很好通过的.

如果做认证，用0.815的裸铜丝