pcsailor
Member
- Location
- Minneapolis
Hello,
I've been wondering how you consider solar and battery backups when doing load calculations and the effect it has on the utility transformer.
My thinking is that it has little effect, or positive effect and that will cause the transformer to have less output amps to the customer.
But what if you're calculating the other way?
Between solar, a grid-tied vehicles, and batteries, what happens if you're sending kW to the grid?
What are the chances to burn up a transformer stepping up, not down, and should a load calculation reflect this?
I'm asking because I'm adding ~40kW solar and ~85kWh battery backup to a 'bugout' shelter with a 400amp service, two 200a load centers, 3 geothermal systems, and four 14-50 EVSE charger receptacles.
Thanks,
Phil
I've been wondering how you consider solar and battery backups when doing load calculations and the effect it has on the utility transformer.
My thinking is that it has little effect, or positive effect and that will cause the transformer to have less output amps to the customer.
But what if you're calculating the other way?
Between solar, a grid-tied vehicles, and batteries, what happens if you're sending kW to the grid?
What are the chances to burn up a transformer stepping up, not down, and should a load calculation reflect this?
I'm asking because I'm adding ~40kW solar and ~85kWh battery backup to a 'bugout' shelter with a 400amp service, two 200a load centers, 3 geothermal systems, and four 14-50 EVSE charger receptacles.
Thanks,
Phil