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Panels & Service Upgrades · Ontario, California

Sub Panel Installation in Ontario, CA

Extra capacity for garages and ADUs. Local electricians in Ontario with upfront pricing, same-day appointments and 24/7 emergency response.

⚡Same-Day Service
💲Upfront Pricing
📍Ontario Local Electricians
🛡️Workmanship Warranty

Sub Panel Installation Services in Ontario

Searching for sub panel installation near me in Ontario? Dab Electrical Services is the local electrical company Ontario homeowners and businesses trust. A sub panel brings power where you need it: a garage workshop, ADU, pool house, home office or addition, without crowding your main panel. We serve every neighborhood in Ontario and nearby Guasti, Montclair, Rancho Cucamonga.

Why choose Dab Electrical Services for sub panel installation in Ontario? Because we show up when we say we will, explain every option in plain English and never pad the invoice. Our electricians in Ontario carry the parts for most jobs on the truck so your sub panel installation is finished in one visit.

Our sub panel installation in Ontario includes:

  • Garage and workshop sub panels
  • ADU and guest house panels
  • Pool and spa equipment panels
  • Feeder wiring and trenching
  • Load calculations
  • Permits and inspections

Popular searches we serve: sub panel installation Ontario, subpanel electrician Ontario, garage sub panel Ontario, ADU sub panel Ontario, detached garage electrical Ontario.

Sub Panel Installation – Ontario

Call: (888) 592-6466

Serving: Ontario and San Bernardino County, plus Guasti, Montclair, Rancho Cucamonga

Availability: 24/7 emergency · Same-day appointments

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How Sub Panel Installation Works in Ontario

Call or book online

Tell us what is going on. For emergencies we dispatch immediately; for projects we schedule a convenient arrival window.

Diagnosis and upfront quote

Your electrician inspects the issue, explains the options and gives you a firm price before any work starts.

Expert work, clean finish

We complete the job to code, test everything, clean up and walk you through what was done.

Warranty and follow-up

Your work is backed by our workmanship warranty, and we are one call away if you ever need us again.

Ontario Reviews

★★★★★

“Had a Level 2 EV charger installed in the garage. Clean conduit run, permit handled, and they even submitted the rebate paperwork. Charging at home now.”

— Daniel R., Ontario, CA
★★★★★

“Aluminum wiring remediation with approved connectors. They documented everything for the insurance company.”

— Emily J., Ontario, CA
★★★★★

“Tesla Wall Connector installed on a 60 amp circuit. Clean work, Wi-Fi set up, and the inspector had zero notes.”

— Steve N., Ontario, CA

Sub Panel Installation FAQs – Ontario

What size sub panel do I need?

It depends on the loads you plan to run. We calculate it during the estimate.

Can you run power to a detached building?

Yes, via underground feeder or overhead conduit as the site allows.

Does an ADU need its own panel?

Most do. A dedicated sub panel also simplifies future metering.

What payment options do you accept in Ontario?

We accept cash, checks and all major credit cards, and financing is available for larger projects.

Sub Panel Installation in Ontario – call now

Upfront pricing. Same-day appointments. 24/7 emergency response.

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