Mike Dolt Enterprises
Mike Dolt Enterprises
User: 360Youth, Location: Newport, NC
Asked on: Tuesday, March 22, 2011 at 5:00 pm EDT
Answered on: Tuesday, May 14, 2024 at 3:06 am EDT
Question: A friend called me up to pick my brain about an install. Not sure I was much help, go figure. Here is what he had:CT Cabinet-Fused Service Disconnect-ATS-MDP, 3-phaseThe service disconnect came with no neutral bar. Can he run his neutral from the CT cabinet straight through the service disconnect to the ATS, and bond the disconnect from the CT and the ATS from the disconnect? Neutrals and grounds separated at the ATS as normal. I will have to look it up when I get home, but wanted to have some input from the members as well. Thanks. Hope I explained it sufficiently. Let me know if I did not.Thom
Yes, he can run his neutral from the CT cabinet straight through the service disconnect to the ATS, and bond the disconnect from the CT and the ATS from the disconnect. Neutrals and grounds should be separated at the ATS as normal.The NEC requires that the neutral be bonded to the equipment grounding conductor at the service entrance. In this case, the service entrance is the CT cabinet. The neutral bar in the service disconnect is not required, but it is common practice to install one to provide a convenient place to terminate the neutral conductors.The bonding between the service disconnect and the ATS is also required by the NEC. This bonding ensures that the neutral and grounding systems are properly connected throughout the electrical system.Here is a diagram of the proposed installation:
CT Cabinet(Neutral)|Service Disconnect
(Neutral)|ATS(Neutral)|MDP
(Neutral)|Loads