Where To Locate Solar In Current Electrical System…Failed Inspection Once

[3L3CTRICAL]

I currently have a solar system installed, but it failed the inspection because the engineer did not have the electrical system listed properly. After confirming the system with the engineer, I’m having issues confirming the correct way to connect it to the house.

Here is the current electrical setup.

- Main Service Panel - 200A Main
- Main Service Panel - 225A Busbar

- Feeder Wires - 2/0 CU (Connects Main Panel to Sub Panel)

- Sub Panel - No Main (it gets fed from the 200A Main Service)
- Sub Panel - 225A Busbar

Now that we’ve established that, we’re having issues confirming WHERE the solar needs to be installed in the system.

1. Option 1 - Main Breaker (200A) > Solar Breaker (70A) > 2/0 CU Feeder Wires > Sub Panel (Loads)

2. Option 2 - Main Breaker (200A) > 2/0 CU Feeder Wires > Sub Panel (Loads) > Solar Breaker (70A)

To confirm, the Main Panel and Sub Panel Busbar ratings are both 225Amps. I thought the 70A Solar needed to be added at the furthest distance away from the Main (Option 2)…but the Engineer confirmed it could be installed in the Main (Option 1).

Which is the correct way to install?

 

[tom baker]

Who did the install? Please update your profile and repost with who did the install.
You need a new engineer or just a solar electrical contractor. Solar is very common in FL…