The 2017 NEC Code Compliance states that flexible power cords hidden behind a wall are a violation of the National Electric Code and could void your home insurance coverage. Multimedia Tech only performs TV mounting, home theater installation, or all of the other home and business installation services following building and national electric codes.
The following is an excerpt from (NEC) – NFPA 70
400.8 Uses Not Permitted. Unless specifically permitted
in 400.7, flexible cords and cables shall not be used for the
(1) As a substitute for the fixed wiring of a structure.
(2) Where run through holes in walls, structural ceilings, suspended ceilings, dropped ceilings, or floors.
(3) Where run through doorways, windows, or similar openings.
(4) Where attached to building surfaces.
Exception to (4): Flexible cord and cable shall be permitted to be attached to building surfaces in accordance with the
provisions of 368.56(B)
(5) Where concealed by walls, floors, or ceilings or located.
above suspended or dropped ceilings
(6) Where installed in raceways, except as otherwise permitted in this Code.
(7) Where subject to physical damage
In plain and simple to understand words, it explains how running power cords through the walls is not a substitute or suitable instead of permanent wiring. A new electric electric outlet installed directly behind the TV is what is required.
Power cables are not rated for in-wall use, can’t handle heat requirements and installing them inside the wall is simply ILLEGAL. Additionally, The insurance company will be happy to void covering a home should a fire result.
Safety of all clients surpasses any monetary gain. IF any type of professional installer or installation company advices it is fine to run power cords inside the wall then those unexperienced professionals may not be aware of the (NEC) National Electric Code requirements or are definitely more concerned about shortcuts than personal safety of those who they call clients.