Maksidaa
New Member
Hi all, I've been lurking for a while and need help with my grid tied design. I have a master electrician willing to help me on an hourly basis, but he is not very experienced with solar installs and grid tied battery systems.
I have 3 buildings (main house, garage, guest house) that will all have about 18kw of solar panels total installed by me. I plan on using a hybrid inverter like the EG4 18Kpv + EG4 wall mounted batteries. I have a 200 amp main panel connected to the meter on a pole in my yard, and then the 3 buildings all have subpanels that are directly connected to the main panel. The house is about 30 feet from the pole, the garage and guest house are about 100 feet away from the pole.
Right now, my plan is to install the solar panels, and then tie them all back to one inverter at the exterior wall of the house. Then, if possible, have the inverter and batteries feed all three buildings.
Due to the size of the solar design, I will need to either upgrade the main panel or do a supply side connection.
My current questions are:
1) Is it possible to tie all 3 sub panels to the inverter+battery with this layout, or do I need inverters and batteries for each building?
2) When it comes to supply side connection vs panel upgrade, what is the general consensus?
3) I am 99% sure if I use the 18kpv I do not need any microinverters, and all I need are the DC disconnects at each building for the solar panels. Is this correct?
4) I've seen the demo videos for the EG4 Gridboss and Flexboss. Would these be better in my case than the 18kpv?
5) If I use the Gridboss, would I replace the main panel with the Gridboss and then connect my subpanels to it?
6) Or, would I connect the Gridboss between the main panel and the sub panels?
I'm a little bit confused how to make this all work, I'm hoping you all can help. Thanks!
I have 3 buildings (main house, garage, guest house) that will all have about 18kw of solar panels total installed by me. I plan on using a hybrid inverter like the EG4 18Kpv + EG4 wall mounted batteries. I have a 200 amp main panel connected to the meter on a pole in my yard, and then the 3 buildings all have subpanels that are directly connected to the main panel. The house is about 30 feet from the pole, the garage and guest house are about 100 feet away from the pole.
Right now, my plan is to install the solar panels, and then tie them all back to one inverter at the exterior wall of the house. Then, if possible, have the inverter and batteries feed all three buildings.
Due to the size of the solar design, I will need to either upgrade the main panel or do a supply side connection.
My current questions are:
1) Is it possible to tie all 3 sub panels to the inverter+battery with this layout, or do I need inverters and batteries for each building?
2) When it comes to supply side connection vs panel upgrade, what is the general consensus?
3) I am 99% sure if I use the 18kpv I do not need any microinverters, and all I need are the DC disconnects at each building for the solar panels. Is this correct?
4) I've seen the demo videos for the EG4 Gridboss and Flexboss. Would these be better in my case than the 18kpv?
5) If I use the Gridboss, would I replace the main panel with the Gridboss and then connect my subpanels to it?
6) Or, would I connect the Gridboss between the main panel and the sub panels?
I'm a little bit confused how to make this all work, I'm hoping you all can help. Thanks!