Hi.
For a 100 hp (at 230 Vac) FLC is 248A (based on NEC table), is this correct:
1.) Branch circuit protection will be 248A x 250% = 620 A or 600 AT
2.) Main contactor is 248A x 58% = 145A, and main contactor = delta contactor = overload protection
3.) Star contactor is 248A x 33% = 85A
4.) Branch conductor size is 60mm2 (00 AWG). Ampacity of 60mm2 is 170A, this is > 145A.
Did I forget something? Please respond.
For a 100 hp (at 230 Vac) FLC is 248A (based on NEC table), is this correct:
1.) Branch circuit protection will be 248A x 250% = 620 A or 600 AT
2.) Main contactor is 248A x 58% = 145A, and main contactor = delta contactor = overload protection
3.) Star contactor is 248A x 33% = 85A
4.) Branch conductor size is 60mm2 (00 AWG). Ampacity of 60mm2 is 170A, this is > 145A.
Did I forget something? Please respond.