I've been reading a lot of the powerwall documentation but having some trouble finding some answers to a few questions. Some of these are more esoteric and might need help from @miimura @wwhitney or other electrical engineering wizards. Thanks in advance to everyone for any insight you can provide.
Q1: Do powerwalls count toward the "120% rule" limit of the electric panel?
i.e. 200A rated electrical panel fed by 200A service can have up to 40A of solar connected, but are powerwalls also limited to the 40A envelope?
If yes, Does net metering have any effect on this? How does Tesla work around this and allow 6 powerwalls on a 200A service?
Q2: Do you know if Tesla can integrate an existing solar array into a powerwall install?
Example: I have a 3.4kW solar array now through an SMA inverter. Could I add a few powerwalls and 4kW of Tesla solar to the existing system, for a total of ~7.5kW solar?
Q3: Related to Q2...I have the existing 3.4kW solar array connected to a 100A (125A-rated) subpanel in the garage via a 20A breaker. Would new generation need to be connected to the same subpanel? Or could the new 4kW solar and powerwalls connect to a Tesla gateway with the 100A subpanel becoming a "partial home backup" panel while keeping its existing 20A solar?
This is still all hypothetical. The electrical engineering side of me wants to understand how this works for future home-improvement decisions. Thanks.
Q1: Do powerwalls count toward the "120% rule" limit of the electric panel?
i.e. 200A rated electrical panel fed by 200A service can have up to 40A of solar connected, but are powerwalls also limited to the 40A envelope?
If yes, Does net metering have any effect on this? How does Tesla work around this and allow 6 powerwalls on a 200A service?
Q2: Do you know if Tesla can integrate an existing solar array into a powerwall install?
Example: I have a 3.4kW solar array now through an SMA inverter. Could I add a few powerwalls and 4kW of Tesla solar to the existing system, for a total of ~7.5kW solar?
Q3: Related to Q2...I have the existing 3.4kW solar array connected to a 100A (125A-rated) subpanel in the garage via a 20A breaker. Would new generation need to be connected to the same subpanel? Or could the new 4kW solar and powerwalls connect to a Tesla gateway with the 100A subpanel becoming a "partial home backup" panel while keeping its existing 20A solar?
This is still all hypothetical. The electrical engineering side of me wants to understand how this works for future home-improvement decisions. Thanks.