Installing solar with one main breaker and two sub-main breakers

[FAustin]

Good day to all,

I am curious. If a factory has one main breaker (1200A) coming fro the utility grid, where it distributes the power to two sub-main breaker, where each is 600A breaker, a located at different location. I have searched online but found no solution.

There are two possible ways I can think of to connect the inverter:

Scenario 1: Connect inverter to the 1200A main breaker. from there, it will distribute power to the two sub-main breakers. However, this location is a tight fit for the inverse and the breaker box.

Scenario 2: Connect the inverter to one of the sub-main breaker. My thinking is that, since the two sub-main breakers are connected to one main breaker, the solar power should also be able to give power to the other sub-main breaker if the inverter that's connected to the sub-main breaker, still has excess power to give, through the process of going back to the main (1200A) breaker then to the other sub-main breaker (600A).

if I am to go with Scenario 1, I will connect the smart meter and ct sensor at the main (1200A) breaker, like how peopler usually do, even in small scale set up

If I am to go with scenario 2, should I connect the smart meter and ct sensor at the main (1200A) breaker or at the sub-main breaker (600A) where the invert is tapped? The problem in doing so is, won't the solar power just stop at the sub-main breaker where the inverter is connected?

Have you guys encountered this type of scenario? Appreciate in advance your time in reading and assisting me.

 

[Madco]

There is a lot in play here. Available fault currents and attendant coordination studies for starters. Connection to 1200A gear is well outside the scope of DIY solar. You should seek engineering assistance.