Ctay005
Member
- Location
- Orem, Utah, USA
I have a customer who is looking to get a larger system (about 35kW) installed to offset a good portion of his annual usage (around 150,000kWh per year).
His house is fed by a 400A main panel that has 2 200A branches. One of the branches goes directly to his wood shop out back and the other goes to his house.
In his shop he has a bunch of wood working tools and a few tools that require 3-phase. He's using 2 Phase-a-matic rotary phase converters to get this power.
He wants us to be able to offset 80% of his power and I just dont see how this could be possible given his electrical setup.
My first question is: Am I limited to 120% of the 200A branch going to his shop (where the panels and inverters will be installed) or can I go higher since he has a 400A service. It seems that since his shop is ran off of a 200A breaker, that 200A is what I will base the 120% rule off of. If that is the case, it would be better off for me to do 2 systems, one for his shop and another for his house. That way I could get up to 80A instead of 40A.
My 2nd question is. Would it be better to go with the smaller single phase inverters (my preference) or a larger 3-phase inverter (customer's preference). I don't know how a 3-phase PV system will work with his setup since he only has 2 machines running on his 3-Phase panel and everything else in his shop as well as his house is all the single phase.
I haven't dealt with 3-phase on a residential system so this is a new realm for me in the residential PV industry!
His house is fed by a 400A main panel that has 2 200A branches. One of the branches goes directly to his wood shop out back and the other goes to his house.
In his shop he has a bunch of wood working tools and a few tools that require 3-phase. He's using 2 Phase-a-matic rotary phase converters to get this power.
He wants us to be able to offset 80% of his power and I just dont see how this could be possible given his electrical setup.
My first question is: Am I limited to 120% of the 200A branch going to his shop (where the panels and inverters will be installed) or can I go higher since he has a 400A service. It seems that since his shop is ran off of a 200A breaker, that 200A is what I will base the 120% rule off of. If that is the case, it would be better off for me to do 2 systems, one for his shop and another for his house. That way I could get up to 80A instead of 40A.
My 2nd question is. Would it be better to go with the smaller single phase inverters (my preference) or a larger 3-phase inverter (customer's preference). I don't know how a 3-phase PV system will work with his setup since he only has 2 machines running on his 3-Phase panel and everything else in his shop as well as his house is all the single phase.
I haven't dealt with 3-phase on a residential system so this is a new realm for me in the residential PV industry!