Thibautwoolace
New Member
- Joined
- Jul 30, 2022
- Messages
- 1
I'm doing my first build for a friend, and need help finalizing the design. He had ordered a bunch of parts last year, and he installed 5.2 kW of panels, but he doesn't know how to do the electrical and needed my help. He has a Growatt 5000 ES off grid inverter, Solar Edge 5k Auto transformer, and 16 3.2V 280ah LFP batteries (about 0.9 kW each), and a JBD 20s BMS, and now I'm stuck trying to figure out how to put this system together.
This is my general understanding of how the system will work (diagrams below for reference):
The PV string will run into the PV IN port of the Growatt.
The PV OUT port will run to the battery (with BMS).
The AC IN port will run to a breaker on the manual transfer switch.
The AC OUT port will run to our new critical loads sub panel onto a breaker to power the panel. The Transformer will also run to the panel with a breaker, and the neutral will run directly to the neutral busbar. We will move many of his loads from his main panel over to his critical loads panel, such as fridge, furnace, lights, and outlets.
The inverter will power these loads with solar first, then battery power, then grid power (or generator if the grid is down).
My biggest concern with all os this is the AC Input to the Growatt. This will allow me to power the critical load panel as long as they aren't using over 5kW of power at once, is that correct? If so, I'll be putting as many loads as I can on this sub-panel as long as I don't go over the 5kW mark.
I'd love some confirmation that I'm on the right track here, or am I missing something. Any input would be highly appreciated!!
This is my general understanding of how the system will work (diagrams below for reference):
The PV string will run into the PV IN port of the Growatt.
The PV OUT port will run to the battery (with BMS).
The AC IN port will run to a breaker on the manual transfer switch.
The AC OUT port will run to our new critical loads sub panel onto a breaker to power the panel. The Transformer will also run to the panel with a breaker, and the neutral will run directly to the neutral busbar. We will move many of his loads from his main panel over to his critical loads panel, such as fridge, furnace, lights, and outlets.
The inverter will power these loads with solar first, then battery power, then grid power (or generator if the grid is down).
My biggest concern with all os this is the AC Input to the Growatt. This will allow me to power the critical load panel as long as they aren't using over 5kW of power at once, is that correct? If so, I'll be putting as many loads as I can on this sub-panel as long as I don't go over the 5kW mark.
I'd love some confirmation that I'm on the right track here, or am I missing something. Any input would be highly appreciated!!