Which factor affect cable assembly using?

Which factor affect cable asssembly using? it indlucing pitch, contacting and environment and so on.

1.Pitch

A good cable assembly or wiring harness pitch and pins should match the wafer or connector between wire and PCB board. Too big, it;s easy to slip out when you are using, the current will break over; too small, it can't be connectted together and used. 

2.Contacting

When we are customizing wiring harness or customizing cable assembly, we should obey the currect and contacting request, can't miss anyone or take a wrong leading for current, it will broken your machine.For example, the contacting request 1-1, 2-2, 3-3, but you contact 1-3,2-2,3-1, then it maybe get a fire and burn all making.

3.Environment

Electrical wiring harness using should comply with environment when you are using. In a cold country or environment, the wire request to balance -30 to 70 degree in your special using; opposite, it should take 150-300 degree in high tempeture environment.