400 amps enters at the left switch. The middle box, shown with its door open, takes 150 amps to the cottage and 50 amps to the Tesla EV charger. The switch on the right takes 200 amps to the main panel in the house.The electricity was upgraded while building the addition, taking it from 100 amps to 400 amps. Much of the original wiring was replaced, along with switches and outlets.
Electrical cables from a pole in the NE corner of the property pass deep underground to the east back corner of the garage and, after crossing the access drive to the inside of the garage, into a 400-amp circuit breaker, the likes of which are never seen residentially. (Seriously, that switch alone cost $2,500. In 1986.) Beside that are two separate 200-amp breaker switches, one for the main house and another for the cottage out back.
The electrical line to the cottage is buried in the same trench as the sewage and well-water lines and is therefore five feet deep. The cottage has its own 150-amp main panel (not a subpanel). The electrical meter is unusual, as almost no houses have 400 amps coming in.
The garage has a 50-amp Tesla charging station at the front of the middle bay. It can charge cars in any of the three bays.