HoosierSparky
Senior Plans Examiner, MEP
- Location
- Scottsdale AZ
- Occupation
- Senior Plans Examiner
I have a 2400 sq ft house with an existing 200A main. House is getting a PV system w/ batteries and an EV charger. The main requires derating to 125A to make this work. When doing load calcs for derating a main breaker for PV, are EV chargers calc'd @ 100% or 40%?