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Motor terminations

Motor terminations

Motor terminations

(OP)
We are required by regulation (MSHA - Mining Safety and Health Admin.) to use shielded cables to connect to high voltage motors.  The cable is an SHD-G-GC construction, and the voltage is 4160V, 3 phase.  The G-GC stands for Ground with a Ground Check conductor.  The supply system is resistance grounded.  At times, the cables are less than 15 feet from the controller.  Question - Do these cables require stress relief at the ends?  If not, what is the critical length (and/or voltage level) that stress relief must be used.
Thanks,
Podo

RE: Motor terminations

I believe you do need stress relief.  The stresses on the end of the cable insulation are not dependant on length, but voltage level.

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