EPO Wiring OK to Run with Feeder?

[scotteng]

We are designing the addition of a generator on a strip retail tenant who is somewhat remote from the metering service equipment. AHJ requires the generator EPO to be at the service equipment. Running a new conduit for EPO control wiring would require routing through a number of existing tenant spaces which the LL desires to avoid. We are pulling a new 3/0 CU tenant feeder in an existing 2"C to increase service to 200A.

Is there anything that would prevent us from running the EPO control wiring with the tenant feeder conductors?

Thanks!

 

[texie]

We are designing the addition of a generator on a strip retail tenant who is somewhat remote from the metering service equipment. AHJ requires the generator EPO to be at the service equipment. Running a new conduit for EPO control wiring would require routing through a number of existing tenant spaces which the LL desires to avoid. We are pulling a new 3/0 CU tenant feeder in an existing 2"C to increase service to 200A.

Is there anything that would prevent us from running the EPO control wiring with the tenant feeder conductors?

Thanks!

I would think, off the top of my head, that you could do it if you create a class 1 control circuit. Isolate your new class 1 circuit at the at the genset with a relay interfaced to the genset control system. I would use DC for the new control circuit to avoid capacitance issues, especially on a long run like this. I think I would be inclined to run at aleast a #10 to avoid damaging the control wires while pulling with larger other conductors.

 

[texie]

I would think, off the top of my head, that you could do it if you create a class 1 control circuit. Isolate your new class 1 circuit at the at the genset with a relay interfaced to the genset control system. I would use DC for the new control circuit to avoid capacitance issues, especially on a long run like this. I think I would be inclined to run at aleast a #10 to avoid damaging the control wires while pulling with larger other conductors.

I might add that you could even get creative and use a 3 wire system and have EPO buttons at the service and at the tenat space with a reset button only at the genset.