Electric vehicles have gone from a niche purchase to a common sight in East Bay driveways, and with that shift comes a question a lot of new owners haven’t had to think about before: how do you actually charge it at home? Unlike a gas fill-up, home EV charging depends entirely on your property’s existing electrical capacity — which means the installation almost always starts with your electrical panel, not the charger itself.
Here’s what to expect from a professional EV charger installation with O.T. Electric Inc, whether you’re a homeowner in San Leandro or managing a multi-family property across the East Bay.
Most home EV charging setups use a Level 2 charger, which requires a 240-volt circuit — the same type used for a clothes dryer or electric range. This delivers a full charge overnight, compared to the trickle-charge speed of a standard 120-volt outlet. But a Level 2 charger draws a meaningful amount of continuous power, which is where the electrical panel comes into play.
Before a charger goes on the wall, a licensed electrician needs to confirm your panel can safely support the additional load without overloading existing circuits. This involves a load calculation that accounts for your home’s current electrical demand plus the new charger. In many older East Bay homes — particularly those still running on 100-amp service — this step reveals that a panel upgrade is needed before the charger installation can move forward. It’s a common enough pairing that we covered the warning signs in more detail in our post on signs your home needs a panel upgrade.
Residential installations typically involve a single Level 2 charger for a single-family home, though multi-family buildings and townhouses have their own considerations around shared electrical infrastructure and dedicated circuits per unit.
Commercial installations are a different scale entirely. Offices and apartment complexes often need multiple chargers installed at once, which means load calculations, conduit work, and panel upgrades sized for simultaneous use rather than a single vehicle. Property managers considering EV charging as a tenant amenity should factor in both the upfront installation and how future chargers might be added as demand grows.
Most EV charger installations require a permit, and most homeowners don’t realize that until they’re partway through a project. Skipping this step can create real problems at resale or during an insurance claim if the wiring was never inspected. We handle permitting and utility coordination as a standard part of every installation, so there’s no gap in your documentation later.
Most residential installations are completed in a few hours to a day. Commercial projects take longer depending on the number of chargers and whether panel upgrades are required.
Can you install an EV charger in an older home? Yes. Many older homes need a panel upgrade or circuit modification to safely support a Level 2 charger. We evaluate your system first and recommend any necessary upgrades — see our panel upgrade services for what that process involves.
Do you handle commercial EV charger installations? Yes, we install and manage EV chargers for offices, apartment complexes, and other commercial properties, including installations with multiple charging units.
Do I need a permit for EV charger installation? In most cases, yes. We handle all permitting, inspections, and utility coordination so your installation is fully compliant with local regulations.
How long does an installation take? Most residential installations take a few hours to a day. Commercial installations may take longer depending on the number of chargers and any required panel upgrades.
Which areas do you serve for EV charger installation? We install EV chargers throughout San Leandro, Oakland, Hayward, Fremont, Berkeley, San Mateo, and the surrounding East Bay communities.
Thinking about home or commercial EV charging? Contact O.T. Electric Inc for a free estimate, or browse our full range of electrical services to see everything we handle beyond EV charging.
