Meter main combo to Generator ATS

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Johnhall30

Johnhall30

Senior Member
Location
New Orleans, LA
Occupation
Engineer
I saw this install today and cannot figure out how it could have been wired. On the left is a meter/main combo with a 6-main setup and no main breaker for the whole service.

Without taking off the ATS and panelboard covers to look, How can you connect a whole home generator to this panel considering the secondary of the meter terminals is bussed directly into the panelboard?

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The only legal way to do this would be to have the ATS wired as a subpanel and fed from a breaker in the meter/main, and any house panel to also be a subpanel.
Looks like they fed from the meter/main to the ATS and from the ATS back through the meter/main and into the house somewhere.
 
Little Bill said:
The only legal way to do this would be to have the ATS wired as a subpanel and fed from a breaker in the meter/main, and any house panel to also be a subpanel.
Looks like they fed from the meter/main to the ATS and from the ATS back through the meter/main and into the house somewhere.
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I agree.
The upper LB goes from the main breaker with the meter to the normal power in the ATS. They came off the load side through the lower LB, and probably spliced (illegally) to the feeder for the panel inside. Unless the ATS has a breaker on the load side, the conductors to that panel are only protected by the breaker in the generator.
 
It's probably one of those sketchy jobs where they take out the panel's bussing (or factory installed conductors) between the meter socket and the bus then connect the ATS between them.
 
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