Cabrillo Project · Marina, San Francisco · Panel Upgrade + EV Charging
60A panel upgrade to 200A + Tesla Wall Connector, Marina duplex
1920s duplex, 2 units, single 60A knob-and-tube service
Draft — awaiting Cabrillo photography & customer consent
The customer's problem
New EV in the driveway with no way to charge above trickle. Existing 60A service was already at capacity (kept tripping when both units ran the microwave). Owners wanted a modern service, a Tesla Wall Connector, and a dedicated subpanel for a future ADU conversion — without displacing the downstairs tenant.
The Cabrillo solution
Coordinated PG&E service upgrade to 200A. Replaced the exterior meter socket + main disconnect. Installed a new 200A main panel in the garage; kept the existing subpanel for the downstairs unit alive throughout. Ran 60A subfeed to a new Tesla Wall Connector at the driveway. All existing knob-and-tube branch circuits inspected and phased for a subsequent rewire project.
Equipment installed
| Brand | Model | Role |
|---|---|---|
| Square D | QO 200A main breaker panel (40 space) | Main service panel |
| Milbank | U5168-XL 200A meter socket | Meter can |
| Tesla | Wall Connector Gen 3 (48A / 240V) | EV charger |
| Square D | QO 40A subpanel (downstairs unit) | Preserved existing subpanel |
What the homeowner got
- 48A EV charging (~44 miles/hour of range)
- 200A service supports future ADU + heat-pump conversion
- Zero downtime for the downstairs tenant
- Full PG&E coordination handled by Cabrillo
- Duration
- 3 working days (crew of 2; 1 day PG&E cutover + meter install, 1 day panel + subpanel wiring, 1 day EV charger + inspection)
- Financing
- In-house 12-month same-as-cash
- Service
- Panel Upgrade + EV Charging
- Location
- Marina, San Francisco