Charging on a standard outlet gets you a handful of miles an hour. A Level 2 charger fills the battery overnight. OSB installs home and workplace EV charging across Onset, including the load calculation your panel actually needs.
“The dispatcher actually understood what I was describing on the phone and told me which breaker to shut off before they arrived.”
“The quote they gave me on the phone was the number on the invoice. That is apparently rare and it shouldn't be.”
“Bought an EV and had no idea what my panel could handle. They did the load calculation, told me straight that I had room, and installed the charger two days later.”
A short run from a panel with free capacity is often under a thousand dollars plus the unit. Long runs, trenching, or a panel upgrade raise it. We quote flat after a quick look at your panel.
Not always. A load calculation decides it. Many Onset homes on 200 amp service take a 48A charger without changes; older 100 amp services often need an upgrade or a load-management device.
Yes — hardwired, commissioned, and set to the right breaker size for your vehicle and panel.
Most Onset installs are done in a few hours. Trenching to a detached garage or a same-day panel upgrade extends it to a full day.
We file it, meet the inspector, and hand you the closed permit for any rebate paperwork.
100A to 200A service, breaker boxes
See serviceCKT CAT6Automation, structured wiring, hubs
See serviceCKT 14/2Knob-and-tube and aluminium replacement
See serviceCKT 3PHOffices, retail, restaurants, warehouse
See serviceCKT 100AStandby and whole house backup
See serviceCKT DIAGTroubleshooting and fault finding
See serviceFlat pricing quoted before the work starts. Same-day and next-day slots available across Massachusetts.
Three legitimate fixes, one of which is far cheaper than a rewire.
ReadGUIDEOverload, short circuit or ground fault — each has a different cause and a different fix.
ReadGUIDESizing, fuel, transfer switches, and the honest answer on whether you need whole-house coverage.
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