When does a business need a low-voltage or networking specialist instead of a standard commercial electrician?
Commercial buildings require two different categories of electrical work: line-voltage (power, circuits, panels) handled by a licensed commercial electrician, and low-voltage (networking, cabling, security, AV) handled by a low-voltage or structured cabling contractor. Understanding the distinction prevents hiring the wrong contractor — or missing a required trade altogether.
What a standard commercial electrician handles
A licensed commercial electrician handles all line-voltage work: 120V and 240V circuits, panel installation and upgrades, lighting fixtures and controls, HVAC electrical connections, emergency lighting, exit signs, and any work that requires an electrical permit and inspection. If it carries power from the utility — it's their scope.
What a low-voltage or networking specialist handles
Low-voltage specialists handle systems that operate at 50 volts or below: structured cabling (Cat6, Cat6A ethernet), coaxial cable, fiber optic runs, telephone and data outlets, patch panels and network switches, security camera systems (IP and analog), access control wiring, intercoms, AV distribution, conference room systems, and nurse call systems in medical environments. In most states, this work requires a separate low-voltage or limited-energy contractor license.
When you need both for a commercial project
Most commercial buildouts need both. The commercial electrician provides power to server rooms, AV equipment locations, and security panels. The low-voltage contractor runs the cabling that connects devices to the network, cameras to NVRs, and access control readers to control panels. For an efficient project, hire both early and have them coordinate on conduit routes, ceiling plenum access, and equipment room layout before build-out begins.
Specialty cases: fire alarm and AV
Fire alarm systems are low-voltage but typically require a separate fire alarm contractor license in most states — a low-voltage contractor without this license cannot do fire alarm work. AV integration (conference rooms, digital signage, sound systems) is also low-voltage but requires an AV integrator with specific system experience. When building your contractor list for a commercial project, account for each of these separately.
Published · ElectriScout Editorial