Robert Crawley
Member
- Joined
- Jul 30, 2017
- Messages
- 35
Hi everyone.
This is my first build and I am currently working on the design. I will welcome any input and recommendations on my design. I have included a basic outline of my plan below. I am not able to get exact power usage information on the 120VAC side because I am currently out of country on business. I am estimating that my max wattage needed at any given time will not exceed 10kW, but I will confirm when I return home (Southern Mississippi, Gulf Coast, USA).
I can't afford the cost to go completely off the grid, but my house has 2 breaker panels already. One is the 240VAC (H-N-H) Main Service with the meter, has breakers for all the 240 loads, and has a breaker that provides power to the 120VAC Aux breaker. The AUX breaker is where all my 120VAC gets distributed to the various circuits in the house. What I am planning to do is disconnect the 120VAC line from the Main Service and run it to my solar and powerwall build.
I want to use 4 x48VDC battery packs (18650 14S28P) in parallel to provide just over 10kWh of power. (This will be increased as time/funds allow).
I am planning on using 2 x 12AWG copper wiretwisted together for my bus bar. 24 AWG copper wireto connect the cells on the non-fused side (bottom)of the battery packs, and 34 AWG copper wire to make the fuses (top).
I want to use 8 x 340W solar panels to generate the energy. My roof only has one South facing side withenough room to accommodate 8 panels. At my location I can count on 4.5 Sun Hours averaged daily.
Where I need help:
Am I using acceptable wire gauge for my battery packs?
Does anyone have recommendations for battery chargers/inverters for my planned design?
Have I forgotten or missed something that I need to know before I start?
Thank you all in advance!!!
This is my first build and I am currently working on the design. I will welcome any input and recommendations on my design. I have included a basic outline of my plan below. I am not able to get exact power usage information on the 120VAC side because I am currently out of country on business. I am estimating that my max wattage needed at any given time will not exceed 10kW, but I will confirm when I return home (Southern Mississippi, Gulf Coast, USA).
I can't afford the cost to go completely off the grid, but my house has 2 breaker panels already. One is the 240VAC (H-N-H) Main Service with the meter, has breakers for all the 240 loads, and has a breaker that provides power to the 120VAC Aux breaker. The AUX breaker is where all my 120VAC gets distributed to the various circuits in the house. What I am planning to do is disconnect the 120VAC line from the Main Service and run it to my solar and powerwall build.
I want to use 4 x48VDC battery packs (18650 14S28P) in parallel to provide just over 10kWh of power. (This will be increased as time/funds allow).
I am planning on using 2 x 12AWG copper wiretwisted together for my bus bar. 24 AWG copper wireto connect the cells on the non-fused side (bottom)of the battery packs, and 34 AWG copper wire to make the fuses (top).
I want to use 8 x 340W solar panels to generate the energy. My roof only has one South facing side withenough room to accommodate 8 panels. At my location I can count on 4.5 Sun Hours averaged daily.
Where I need help:
Am I using acceptable wire gauge for my battery packs?
Does anyone have recommendations for battery chargers/inverters for my planned design?
Have I forgotten or missed something that I need to know before I start?
Thank you all in advance!!!