New whole house generator and ATS

[dekenselectrical]

I will be installing a new whole house generator with an ATS on an existing house with the meter and 200 amp main breaker located outside and feeding a 40 circuit panel inside. I have not confirmed this yet, but if there is 4/0 SE cable from the outside meter to the house panel (2 hots and a bare ground). My question is now that there will be a service rated ATS next to the outside meter will I have to pull new SER cable 2 hots, a neutral and a ground to the house panel and separate all the grounds and neutrals in the house panel?

 

[hillbilly1]

Should already be four to inside the house, unless they are using the emergency disconnect exception, which I would think that would be for retrofit only.

 

[dekenselectrical]

I will be installing a new whole house generator with an ATS on an existing house with the meter and 200 amp main breaker located outside and feeding a 40 circuit panel inside. I have not confirmed this yet, but if there is 4/0 SE cable from the outside meter to the house panel (2 hots and a bare ground). My question is now that there will be a service rated ATS next to the outside meter will I have to pull new SER cable 2 hots, a neutral and a ground to the house panel and separate all the grounds and neutrals in the house panel?

Okay, I was given incorrect information. The existing service is a 200 amp meter without a main breaker feeding a panel with a 200 amp main breaker. The cable from the meter to the panel is 4/0 SE cable 2 hot's and a bare ground, all the grounds and neutrals on the same bus. The house panel is completely filled with approximately 44 circuits and a sub panel next to it. The sub panel is fed with SER cable 2 hot's a neutral and a ground. So my question is if we add the ATS that is service rated will I be required to pull new SER cable from the ATS to the house panel and separate the neutrals and grounds?

 

[roger]

dekenselectrical, please update your profile to show an accurate location and occupation.

 

[roger]

Thank you.

 

[dekenselectrical]

Thank you.

Thank you. I ran into trouble before because I somehow created two accounts. I hope all this has been corrected

 

[qcroanoke]

Okay, I was given incorrect information. The existing service is a 200 amp meter without a main breaker feeding a panel with a 200 amp main breaker. The cable from the meter to the panel is 4/0 SE cable 2 hot's and a bare ground, all the grounds and neutrals on the same bus. The house panel is completely filled with approximately 44 circuits and a sub panel next to it. The sub panel is fed with SER cable 2 hot's a neutral and a ground. So my question is if we add the ATS that is service rated will I be required to pull new SER cable from the ATS to the house panel and separate the neutrals and grounds?

Yes. From my understanding of the rules you would bond neutral and ground in the ATS and separate neutral and ground from there.