CMC Group
Residential & commercial electrical contractor Serving Maryland • DC • Virginia  |  Mon–Fri, 6 AM – 4 PM

Residential & commercial electrical • MD • DC • VA

Electrical work you can verify.

For homes and businesses, we install EV charging, UPS and lighting systems, fix what others left behind, and inspect other contractors' work. Every system is tested, and you get the results in writing.

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MD • DC • VAService area
Every jobTested & documented
Mon–Fri6 AM – 4 PM

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What brings you to CMC?

Different jobs need different help. Pick the one closest to yours.

Homeowners

Safe, reliable power at home

  • EV charger installation
  • Tripping breakers and dead outlets
  • Lighting indoors and out
  • Corrections and safety fixes
Residential → Businesses & facility managers

Keep the building powered and compliant

  • UPS installs, battery swaps and load tests
  • Lighting retrofits and controls
  • Troubleshooting for trips, faults and hot spots
  • Rework to clear failed inspections
Commercial → GCs, developers & owner's reps

Get an independent set of eyes

  • Third-party QA/QC at key milestones
  • Test witnessing and data review
  • MEP coordination and constructability review
  • Deficiency logs and closeout support
QA/QC & MEP → Fleets, property & EV sites

Add chargers without guessing on power

  • Site assessment and load calculations
  • Level 2 and DC fast charging
  • Load management to avoid costly upgrades
  • Permits, utility coordination, commissioning
EV charging →

How we are different

Installed is not the same as verified

Plenty of contractors finish a job. We finish it, then prove it works.

  1. 01

    Test it

    Insulation resistance, continuity, grounding, torque, runtime and functional tests, run on every system before handover.

  2. 02

    Document it

    Results, photos and labels go into a report you can keep for inspectors, insurers, warranties and your own records.

  3. 03

    Hand it over

    As-built notes, settings and a walkthrough, so your team knows what was installed and how to operate it.

EXAMPLE RECORD FORMATPanel LP-2 • Feeder test
Insulation resistanceRecorded valuePASS
Termination torqueRecorded valuePASS
Ground continuityRecorded valuePASS
Labeling & directoryPhoto attachedPASS

Everything we do

How can CMC help?

Eleven services, one accountable team. Pick the one closest to your job.

EV Chargers

Level 2 and DC fast charging for homes, workplaces, multifamily and fleets.

UPS Systems

Install, battery replacement, maintenance bypass and load testing for critical loads.

Panels & Breakers

Panel installs and upgrades, subpanels, breakers and surge protection.

Outlets, Switches & Alarms

Outlets, GFCI protection, switches and smoke and CO alarms.

Lighting

LED retrofits, parking and exterior lighting, emergency lighting and controls.

Smart Home

Smart thermostats, lighting, security devices and sprinkler controllers.

Rework

Correcting deficient installations, failed inspections and punch-list items.

Testing

Insulation, continuity, grounding, torque and functional testing with reports.

Troubleshooting

Methodical diagnosis of tripping breakers, voltage drop, overheating and faults.

Third-Party QA/QC

Independent inspection so the work matches plans, specs and code.

MEP Services

Mechanical, electrical and plumbing coordination, design review and field oversight.

Equipment we work on

From the service entrance to the last fixture

Switchgear & switchboardsInstall, test, troubleshoot
Panelboards & distributionInstall, clean up, relabel
Dry-type transformersInstall, connect, test
Motor control centersTest and troubleshoot
Generators & ATSConnect, start up, transfer-test
UPS & battery systemsInstall, service, load-test
PDUs & remote power panelsInstall and distribute
EV chargersLevel 2 and DC fast
Surge protectionInstall and verify
Lighting & controlsRetrofit, emergency, sensors
Disconnects & safety switchesInstall and repair
Grounding & bondingInstall, verify, correct

See all services →

Where we work

Maryland, Washington DC and Virginia

Residential, commercial, industrial, multifamily and fleet projects across the region. Not sure we cover your site? Ask. We'll tell you straight.

MD

Maryland

Installation, testing, rework and QA/QC.

DC

Washington, DC

Installation, testing, rework and QA/QC.

VA

Virginia

Installation, testing, rework and QA/QC.

Check your site

Free tool

Will your electrical service handle the chargers?

Enter how many chargers you want and the size of your service. Our EV planner gives a first-pass estimate of the added load and whether you need load management or a service upgrade.

Try the EV planner

FAQ

Common questions

Can you inspect work that another contractor did?

Yes. That is our third-party QA/QC service. We review the installation against plans, specs and code, witness or review testing, and deliver a written deficiency log with photos.

Do you fix work that failed inspection?

Yes. Rework is a core service. We correct the deficiencies, re-test, and document the repairs so you can pass re-inspection.

Will I get test results in writing?

Yes. Testing and commissioning records are part of the job, not an upcharge add-on, so you have them for warranties, insurance and future service.

Do you do residential work?

Yes. We work on homes as well as commercial and industrial sites, from home EV chargers and lighting to troubleshooting and corrections.

What size jobs do you take?

From a single troubleshooting call to multi-building installations and project-long QA/QC. Tell us what you have and we will say honestly if we are the right fit.

Have a project, a problem or a punch list?

Tell us what you need. We reply within one business day.

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