Low-Voltage vs the Electrician: Who Owns What on a Job Site

“Line voltage” is the standard building power that lights the space and feeds the outlets. “Low voltage” is the family of systems that run at 50 volts or less — the threshold the Texas Occupations Code uses in §1305.003 to exempt that work from state electrician licensure: network cabling, telephone, wireless access points, security cameras, card access, intercom, paging, and conference-room AV. They are different trades with different tools, different code sections, and often different licenses, which is exactly why the handoff between them needs to be deliberate.

Scopes vary by project and by the contract, but the usual division looks like this:

The electrician

• Panels, circuits, and all line-voltage power.
• Dedicated power and, often, the conduit or raceway system.
• Power to the telecom room and to devices that need a line-voltage feed, such as some displays and gate operators.

The low-voltage / IT contractor

• Data and fiber cabling, jacks, patch panels, and racks.
• Security cameras, access control, and alarm cabling.
• Wireless access points, paging, sound, and audio/video wiring.

The gray areas

• Conduit and pathways: is the electrician stubbing sleeves and the low-voltage crew pulling cable, or is one trade doing both? Decide explicitly.
• Back boxes and mounts: who provides the recessed box behind a display or the mount for a camera?
• The display whip: a wall-mounted screen usually needs both a line-voltage outlet (electrician) and a data or HDMI path (low voltage) at the same spot — coordinate the location so both land behind the screen.

In Texas, licensing follows the type of low-voltage system, and the rules are worth verifying before the bid. Pure structured cabling, telecom, intercom, sound, and audio/video work operating below 50 volts is generally exempt from state electrician licensure under Texas Occupations Code §1305.003, because it is not line-voltage electrical work. Burglar alarm, monitored CCTV, and access control fall under the Texas Department of Public Safety Private Security Bureau. Fire alarm work is licensed separately through the State Fire Marshal’s Office. And the moment a low-voltage system needs to tie into a 120-volt source, that connection is the electrician’s licensed work. Cities can also impose their own requirements on top of the state’s, so confirm the rules for your specific jurisdiction. The practical takeaway: “low voltage” is not one license, and matching the right licensed trade to the right system keeps inspections clean.

The pattern is predictable. Nobody scoped the conduit, so on rough-in day each trade assumes the other has it. Work stops, an RFI goes out, and the fix comes back as a change order with a markup. Multiply that across the display whips, the camera mounts, and the telecom-room power, and a “small” coordination gap turns into real money and lost days.

• Put a low-voltage scope in the drawing set, not a “data by others” note.
• Name who provides and who installs conduit, back boxes, and mounts — line by line.
• Coordinate device locations (displays, cameras, access points) so power and data land together.
• Agree on who feeds power to the telecom room and to line-voltage-dependent devices.

Handled together, structured cabling, physical security, and audio/video can be planned as one physical-layer scope that dovetails with the electrician’s work instead of colliding with it — the coordinated approach we describe in structured cabling for a new build. And because timing drives cost too, it pays to align this with the rough-in schedule.

What is the difference between line voltage and low voltage?

Line voltage is the standard building power an electrician runs. Low voltage covers systems at 50 volts or less — the threshold in Texas Occupations Code §1305.003 — — data cabling, cameras, access control, and audio/video — typically run by a low-voltage or IT contractor. They are separate trades with separate code and licensing.

Does a low-voltage contractor need an electrician’s license in Texas?

Generally no for pure data, telecom, sound, and AV cabling under 50 volts, which Texas Occupations Code §1305.003 exempts from state electrician licensure. But burglar alarm, CCTV, and access control require a Texas DPS Private Security Bureau license, fire alarm requires State Fire Marshal licensure, and tying into 120-volt power requires a licensed electrician. Local cities may add requirements, so verify for your project.

Who runs the conduit — the electrician or the cabling contractor?

It depends on the contract, which is exactly why it should be stated explicitly. Often the electrician provides conduit and sleeves and the low-voltage contractor pulls the cable, but leaving it unscoped is the most common cause of change orders on the physical layer.

How do you avoid change orders between the electrician and the low-voltage trade?

Put a real low-voltage scope in the drawings, name who provides and installs conduit, boxes, and mounts, and coordinate device locations so power and data land in the same place. Deciding this before the bid is far cheaper than resolving it in the field.

Building or renovating in Texas and want the low-voltage scope handled cleanly alongside the electrician? See our network technology and structured cabling services, or call our Houston office at 713-571-2390. See how we work with construction firms on job-site scope.