I'm ready to lose it. Going green sucks. Getting solar sucks. Getting ESS sucks. Bust most of all, PG&E sucks.
The engineer I'm trying to argue with is claiming the following setup will not work for a 8 kWp DC system with 3x Tesla Powerwall 2's using a Tesla Energy Gateway 2.
Main Service Panel rated at 200 A (solar ready Square D SC2040M200PF with 225 A bus bar)
Main Service Panel Houses a 200 A main breaker
All this feeds Tesla Energy Gateway 2
Left side of Gateway 2 houses 3x 30 A breakers for three AC Coupled Powerewall 2s
Left side of Gateway 2 houses 1x 35 A breaker for 240v 6.68 kWp (AC) system (via Enphase Envoy)
L1 Backup Lug uses 6 AWG to feed a internal sub-panel that has operated for years with a 90 A breaker
L2 Backup Lug uses 6 AWG to feed a internal sub-panel that has operated for years with a 70 A breaker
PG&E's engineer's beef is that since the Tesla Energy Gateway 2 is rated for 200A, then my main service panel needs to be sized 120% (240 Amps). So PG&E says I will only be allowed to use a 125 A main breaker and force the contents of the Tesla Energy Gateway 2 down to 100 Amps.
This means I cannot use the L2 backup lugs and need to move those off to a separate line coming out of my Main Panel.
Ugh.
The engineer I'm trying to argue with is claiming the following setup will not work for a 8 kWp DC system with 3x Tesla Powerwall 2's using a Tesla Energy Gateway 2.
Main Service Panel rated at 200 A (solar ready Square D SC2040M200PF with 225 A bus bar)
Main Service Panel Houses a 200 A main breaker
All this feeds Tesla Energy Gateway 2
Left side of Gateway 2 houses 3x 30 A breakers for three AC Coupled Powerewall 2s
Left side of Gateway 2 houses 1x 35 A breaker for 240v 6.68 kWp (AC) system (via Enphase Envoy)
L1 Backup Lug uses 6 AWG to feed a internal sub-panel that has operated for years with a 90 A breaker
L2 Backup Lug uses 6 AWG to feed a internal sub-panel that has operated for years with a 70 A breaker
PG&E's engineer's beef is that since the Tesla Energy Gateway 2 is rated for 200A, then my main service panel needs to be sized 120% (240 Amps). So PG&E says I will only be allowed to use a 125 A main breaker and force the contents of the Tesla Energy Gateway 2 down to 100 Amps.
This means I cannot use the L2 backup lugs and need to move those off to a separate line coming out of my Main Panel.
Ugh.