100A/125A subpanel installations · Atlanta, GA

Subpanel installation for your garage, workshop or addition.

Professional 100A and 125A subpanel installations for garages, workshops, additions, detached buildings and more. Safe, code-compliant work handled by licensed electricians.

5.0 from 35 Google reviews
Installation warranty
Free estimates
Permits & inspections handled when required

Request a free estimate

We'll call to discuss your project and arrange an on-site estimate.

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Power for your space

Perfect for homes and outbuildings.

A 100A or 125A subpanel gives you the flexibility to safely power new spaces, heavy equipment and future needs without overloading your main panel.

Garages & workshops

Power tools, compressors, HVAC and more.

Detached buildings

Sheds, guest houses, garages and shops.

Home additions

Add power for new rooms and expanded living spaces.

Outdoor equipment

Hot tubs, pools, EV chargers and landscape lighting.

A new subpanel installed between wall studs.

Our solution

100A/125A subpanel installation. Done right.

We design and install subpanels that are properly sized, safely connected and fully code-compliant, giving you reliable power exactly where you need it.

Evaluate your electrical needs and load
Recommend the right subpanel size (100A or 125A)
Install feeders, conduit and proper wiring
Mount and wire the subpanel
Proper grounding and bonding
Handle permits and inspections (when required)
Test and ensure safe, reliable operation

Our services

Complete subpanel installation services.

100A subpanel

Ideal for most residential garages, workshops and additions.

125A subpanel

More capacity for larger shops, equipment and future needs.

Feeder installation

Properly sized conductors and conduit from your main panel to the subpanel.

Outlets, lighting & more

Install circuits for outlets, lighting, HVAC, EV chargers and heavy equipment.

Our process

A clear process from estimate to power.

01

On-site assessment

We evaluate your space, current electrical system and power needs.

02

Detailed plan & estimate

You'll get a clear, detailed estimate with no surprises.

03

Installation

We install the subpanel, feeders and circuits professionally.

04

Testing & inspection

We test everything and coordinate inspections when required.

Why choose us

Why Atlanta homeowners choose Swift Wire.

5-year installation warranty

Our work is backed by a 5-year installation warranty.

Clear pricing before work starts

You'll get a detailed estimate so you know what to expect.

Permits and inspections handled

We take care of the permits and coordinate inspections when required.

Careful planning around your property

We minimize disruption and keep your property clean.

Clean worksite

We respect your home and leave the job site clean.

Residential & commercial experience

We handle both residential and commercial electrical work across Atlanta.

Reviews

What Atlanta homeowners are saying.

5.0
from 35 reviews
John Malloy3 months ago
Jesse was professional and took the time to insure job was performed correctly and to my satisfaction. I was very pleased with the end result. I would recommend Jesse for your electrical needs.
Juan Acunaa year ago
Jessie and his team were very efficient! From start to finish there was clear communication. Will continue to use them for all our electrical needs!
Jose Mayaa year ago
Very knowledgeable guy. Jessie came out to install lights inside and outside. Very professional. He also installed a set of 240v outlets for my welders. This guy is great definitely recommend. Thank you Swift Wire Electric ATL!

FAQ

Frequently asked questions.

A 125A subpanel can carry more load and usually has more breaker spaces, so it suits bigger shops, more equipment or future add-ons. A 100A subpanel covers most garages, workshops and additions. A load calculation tells us which one you need.

Yes. We install subpanels in attached garages, detached garages, workshops and outbuildings, including the feeder run and any trenching or conduit needed to get there.

In most cases, yes. We pull the permit and coordinate the inspection for you.

It depends on the subpanel size, the distance from your main panel, the feeder size and whether trenching is needed. We look at the site and give you a clear, detailed estimate before any work starts.

An indoor subpanel near the main panel is often done in a day. Detached buildings with a trench take longer. You get a realistic schedule with your estimate.

Yes. We can run the circuits for outlets, lighting, HVAC, tools and an EV charger off the new subpanel in the same job.

Get a free estimate

Ready to add power to your space?

Tell us about your project and we'll provide a free estimate.

Request a free estimate

By submitting this form, you agree to be contacted about your request.