Is the cable supplying all three motors or one cable per motor?How to calculate breaker and cable size feeding three duty submersible motors for lift station with (Wye delta starting method)? based on NEC
Is the cable supplying all three motors or one cable per motor?
I've never seen a three motor wye-start delta-run configuration or even contemplated one... nor do I want to.
Specific Code sections:
430.7(B)(2)
430.22(C)
430.32(A)(1)
If the control panel has short-circuit and ground-fault protection for the motors, refer to 430.24, 430.25, 430.26 and 430 Part V for feeder requirements.the cable supplying one control panel which is supplying the three group of motors and what about the breaker sizing as well