What Is In Wall Surface Channeling for Media Displays? (Chasing TV)
In-wall channeling is a planned route for low-voltage media cables from a TV to connected equipment, usually through a stud bay or listed raceway. It hides signal wiring while keeping cables replaceable and protected. It does not allow ordinary power cords inside walls. Safe work starts with a wall survey, code checks, and a route that preserves framing and firestopping.
Visible cables can spoil a finished display wall, but cutting a channel without a plan can create structural, electrical, or fire-safety problems. I treat TV cable concealment as a low-voltage pathway project, not as permission to bury any cord that happens to fit.
“Chasing” often means cutting a groove into a solid wall. In a typical framed wall, the safer approach is usually to route cables through a stud bay or a listed surface raceway. The right method depends on the wall, the cables, and local code. Confirm the locally adopted code editions and amendments before work begins.
Plan the Chase and Survey the Wall
A cable chase is a planned path that lets media cables travel between the display and equipment. Before opening the wall, identify its structure, services, barriers, and access points. A short survey can prevent a route from crossing a stud, electrical cable, plumbing pipe, or fireblock that should not be cut or left unrestored.
I start by marking the TV location, the equipment location, and the path between them. Then I check the wall with a stud finder and inspect both sides, along with the attic or basement when accessible. A stud finder is a guide, not proof that a cavity is clear. Use suitable inspection tools and stop if you find an unknown wire, pipe, or obstruction.
Check whether the wall is wood-framed, metal-framed, masonry, insulated, or part of a fire-rated assembly. Each needs a different plan. Ask the local building department whether a permit or inspection is needed, especially if the work affects framing, a rated wall, or line-voltage wiring.
Plan two accessible openings: one behind the display and one near the connected equipment. Choose low-voltage plates or fittings that allow the cable ends to pass without sharp bends. If you may upgrade the system later, a listed raceway with room for future cables can be more useful than a tight bundle pulled directly through a small hole.
Check Stud, Cable, and Equipment Clearances
Clearance means enough space to protect the framing, avoid damage to wires, and fit the cable and its connectors. Check the code limits before drilling or notching a stud. Also confirm cable bend limits, raceway fill, and the space needed behind the TV and equipment; a route that fits a bare cable may not fit its connector.
For wood studs, IRC R602.6 generally limits bored holes to 40% of the stud width. An exception can allow up to 60% in doubled studs, subject to the code’s conditions. A bored hole must be at least 5/8 inch (16 mm) from the stud edge. If it cannot meet that clearance, an approved steel protection plate may be required.
Notches have separate limits. IRC R602.6 generally limits a notch to 25% of the width of a bearing stud and 40% of a nonbearing stud. Do not use the bored-hole allowance to justify a deeper notch. When a proposed cut exceeds the limit, stop and ask a qualified building professional or the local authority about an approved repair or alternate route.
| Check | General limit or requirement | Practical check |
|---|---|---|
| Bored hole in a wood stud | Usually no more than 40% of stud width | Confirm stud type and adopted IRC edition |
| Hole in a doubled stud | Up to 60% may be allowed under an exception | Check all conditions and limits in the local code |
| Hole edge distance | At least 5/8 in. (16 mm) from stud edge | Add an approved steel plate where required |
| Notch in bearing stud | Usually no more than 25% of stud width | Do not treat it like a bored hole |
| Notch in nonbearing stud | Usually no more than 40% of stud width | Confirm the wall is truly nonbearing |
| Raceway capacity | Follow listing, fill rules, and cable limits | Leave room to pull and replace cables |
A protection plate is a steel plate installed over a vulnerable area to help prevent a nail or screw from reaching wiring. NEC 300.4 includes physical-protection rules; where a steel plate is required, the applicable provision calls for a plate at least 1/16 inch (1.6 mm) thick. Confirm the adopted code and installation conditions rather than assuming any scrap metal plate will comply.
Also measure the full cable path, not just the distance between openings. HDMI and similar connectors may be wider than the cable itself. Check the cable maker’s bend limits and the TV mount’s movement range. A tight bend behind a tilting mount can strain a connector or make future removal difficult.
Route Cables and Protect the Assembly
A low-voltage pathway carries signal or communications cables, such as HDMI, coaxial, Ethernet, or fiber. Use cables marked for in-wall installation where required by the building and cable manufacturer. Choose a listed raceway when the design calls for one, and follow its fill and bend limits; there is no universal airflow or CFM target for a passive cable chase.
After confirming the route, make only the openings needed for the fittings. In a framed wall, use an existing clear stud bay where possible. Drill through framing only within the applicable limits, and protect wiring from nails or screws where required. Do not cut studs, enlarge a cavity without checking structural limits, or remove fireblocking and leave it out.
Keep power and communications wiring separated as required by the locally adopted electrical code and the specific wiring methods. NEC 725 and 800 cover different classes of circuits and communications wiring; NEC 300.4 addresses physical protection. The exact rules depend on the wiring types and installation, so do not assume that simply placing both cable types in a wall makes them safe together.
Fireblocking limits the spread of fire and smoke through concealed spaces. If your route interrupts a fireblock or crosses a rated assembly, restore it with materials and methods approved for that condition. NEC 300.21 addresses firestopping around electrical penetrations. A common sealant is not automatically suitable for a rated wall or penetration.
Most important, never conceal an ordinary extension cord or power strip in a wall or raceway. A recessed receptacle does not change that rule. For TV power, use a properly installed receptacle or a listed in-wall power relocation system. Have line-voltage work done under local licensing and permit rules.
Compare TV Cable Routing Methods
The best route depends on wall construction, access, and how many cables you need to run. Compare the options before cutting. A framed-wall cavity may allow concealed routing with small openings, while a surface raceway avoids opening the wall. Cutting a channel into masonry can affect the wall and needs a different level of review.
| Method | Best fit | Main checks |
|---|---|---|
| Stud-bay route | Wood-framed wall with a clear cavity | Stud limits, hidden services, fireblocking, cable rating |
| Listed surface raceway | Finished wall where opening it is not practical | Raceway listing, capacity, fittings, appearance |
| Masonry chase | Solid wall where a concealed route is needed | Structural role, utilities, depth, dust control, local approval |
| Existing conduit | Route is accessible and has spare capacity | Fill, bend limits, pull access, cable compatibility |
I do not treat a masonry groove as a simple version of drilling a stud. The wall may be load-bearing, reinforced, or part of a fire-rated assembly. Confirm its construction and get qualified advice before cutting. In any wall type, use a route that leaves the cables accessible for repair or replacement.
Close, Label, and Verify the Installation
Before closing the wall, check the pathway from end to end. Confirm that cables are protected, connectors can pass, bends stay within manufacturer limits, and all required fireblocking is restored. Label both ends so future work is easier. Test the display and connected equipment before patching or covering openings.
A practical sequence is:
- Pull one cable at a time and avoid force that could damage its jacket or connector.
- Label both ends with the equipment or port name.
- Confirm that each connector reaches its device without tension.
- Check the TV mount’s full range of movement.
- Photograph the open route for future reference.
- Inspect the fittings, plates, and firestopping before closing the wall.
- Test picture, sound, network, and other connected functions.
There is no universal airflow requirement for a passive cable pathway. Do not use a sealed chase to ventilate hot equipment. Place heat-producing devices where their manuals allow, and keep the pathway for cables rather than treating it as a cooling duct.
Two illustrative installation scenarios
Framed living-room wall: A homeowner wants HDMI and Ethernet from a TV to a cabinet below. A survey finds a clear stud bay, but a horizontal fireblock interrupts the route. The installer plans accessible openings above and below, checks drilling limits, and uses a method to pass through the obstruction without leaving it open. The cable run is tested before the wall is patched.
Finished masonry wall: A display needs a concealed signal route on a solid wall. Rather than assume a shallow cut is harmless, the installer checks the wall type, services, and whether it is structural or rated. If cutting is not suitable, a surface raceway may provide a safer route with less disruption.
FAQ: In-Wall TV Cable Channeling
Can I put an HDMI cable inside a wall?
Yes, if the cable is suitable for in-wall use under local rules and the manufacturer’s instructions. Route it through a protected pathway and follow bend limits.
Can I hide an extension cord behind drywall?
No. Do not conceal an ordinary extension cord or power strip inside a wall. Use a properly installed receptacle or a listed in-wall power relocation system.
How large can I drill a hole through a wood stud?
IRC R602.6 generally limits a bored hole to 40% of stud width. A limited exception may allow up to 60% in doubled studs. Check local code conditions before drilling.
How close can a stud hole be to the edge?
A bored hole generally needs at least 5/8 inch (16 mm) of wood between its edge and the stud edge. Where required, use an approved steel protection plate.
Can I notch a stud to make a cable chase?
Only within the limits for notches, which differ from hole limits. IRC R602.6 generally allows up to 25% of a bearing stud’s width and 40% of a nonbearing stud’s width.
Do I need a raceway for TV cables?
Not always. A suitable cable may be routed through a wall cavity where local rules allow. A listed raceway can help protect cables and make later replacement easier.
Can power and low-voltage cables share one opening?
Do not assume they can share a route. Follow the adopted electrical code’s separation and wiring-method rules for the specific cables.
Does a cable chase need ventilation?
A passive cable pathway has no universal CFM requirement. Do not use a sealed chase to cool equipment; follow device and cable manufacturer instructions.
What if I find a fireblock in the way?
Do not remove it and leave the opening unsealed. Use a compliant route and restore required fireblocking or rated construction with suitable materials.
Should I use a surface raceway instead of opening the wall?
Consider one when the wall is masonry, the cavity is blocked, or cutting would pose structural or fire-safety concerns. Check the raceway’s listing and capacity.
Final Installation Check
A clean TV cable route starts with the wall, not the saw. Survey the cavity, choose a suitable low-voltage pathway, respect framing limits, protect the wiring, and restore any fireblocking or rated assembly you disturb. Keep line-voltage work separate from signal-cable routing, and verify local rules before closing the wall.
(This article was written by one of our staff writers, Garrett Vance. Visit our Meet the Team page.)
