Sub Panel Installation in Ontario, CA
Whether you are converting a garage, building an accessory dwelling unit, or finally wiring the shop behind the house, a sub panel is the clean way to do it. Our electricians design and install sub panels for Ontario homeowners and small businesses throughout San Bernardino County.
Sub Panel Installation services we provide in Ontario
- Garage and detached workshop sub panels
- ADU and guest house electrical panels
- Pool, spa and outdoor equipment panels
- Sub panels for home additions and remodels
- Underground and overhead feeder installation
- Trenching coordination for detached buildings
- Circuit relocation from a full main panel
- Load calculations and permit handling
Each sub panel project in Ontario starts with a load calculation to confirm the main service can support the new panel. We then run a properly sized feeder, install the sub panel with its own breakers, bond and ground it correctly, and label everything. The result is a clean, expandable panel that passes inspection the first time.
We have installed sub panels for garages, ADUs and shops in Ontario and neighboring Guasti, Montclair and Rancho Cucamonga. If your main panel is already full, we can also discuss whether a panel upgrade should be paired with the sub panel so you are not back at capacity next year.
A sub panel makes sense in Ontario when
- You are building or converting an ADU or garage
- The main panel has no open breaker spaces
- You need several new circuits in one area
- You are adding a shop with 240-volt tools
- Pool or spa equipment needs its own feed
How sub panel installation works with Unique Electrical Services
Call or book online
Tell us what you are seeing. For emergencies, a dispatcher gets an electrician moving right away.
Diagnosis and flat quote
The electrician inspects, explains the cause in plain language, and gives you a written flat price before starting.
Work done right
Clean, code-compliant work with the parts on the truck. Permits and inspections handled when required.
Walkthrough and guarantee
We test everything with you, label the panel, clean up, and back the work with our written guarantee.
Serving Ontario and nearby areas
Searching for sub panel installation near me in Ontario? Our electricians cover every neighborhood in Ontario and the surrounding communities of Guasti, Montclair and Rancho Cucamonga. We are a local electrical company for all of San Bernardino County.
Sub Panel Installation near Ontario
What Ontario customers say
★★★★★Ceiling fans in three bedrooms with no existing wiring. Braced boxes, new switches, all in one afternoon. Our Ontario summers are a lot more comfortable now.
★★★★★Called at 11 pm with a burning smell from the panel. An electrician was at our Ontario house within the hour, found the loose connection and had it fixed before midnight. Genuinely grateful.
★★★★★Recessed lighting in the living room and kitchen. They laid out the spacing on the ceiling first so we could see it, and the dimmers work perfectly with the LEDs. Our Ontario home looks brand new.
Sub Panel Installation in Ontario: frequently asked questions
How much does sub panel installation cost in Ontario?
Cost depends on panel size, feeder length and whether trenching is needed. Ontario customers receive a written flat quote after a site visit.
Do I need a permit for a sub panel in Ontario?
Yes. Sub panels in Ontario require a permit and inspection, which we include in the job.
Can a sub panel go in a detached garage?
Yes. Detached garage sub panels in Ontario are common. We run an underground or overhead feeder and install a separate grounding electrode as code requires.
Which areas near Ontario do you cover for sub panel installation?
All of Ontario and nearby communities including Guasti, Montclair and Rancho Cucamonga, plus the rest of San Bernardino County.