Might be safe as can be but i wouldn t do it.
Can you run power cord behind wall.
Much better to install an outlet behind the tv using a recessed box arlington industries tvbox for example.
Even low voltage speaker wire that isn t in wall rated is a no no.
Cheep way is to fit a socket on an external box thing on the wall run a length of cable in the wall behind the tv and out at the bottom next to the plug socket and then fit a plug to the cable and plug in.
You re supposed to have a new electric socket installed directly behind the tv where you can plug in.
This cut lets you move the wire through the wall without having to make a large hole to fit plugs or power strips through the wall.
It can be done but if a fire results from this then the insurance company may find a reason to not cover the damages.
You should not run power cables through a wall as a substitute for permanent wiring ie wired outlets.
1 as a substitute for fixed wiring of a structure.
Or use a powerbridge to accomplish the same thing as running the power cord but code compliant and just as easy.
In other words running power cords through the walls is not a substitute for permanent wiring.
2 where run through holes in walls structural ceilings suspended ceilings dropped ceilings or floors.
Cut off the end of your extension chord leaving at least two inches of wire length from the power circuit or plug end of your cord.
Yes you will violate code.
Unless specifically permitted in 400 10 flexible cables flexible cord sets and power supply cords shall not be used for the following.
If so you can add a receptacle rather easily behind the tv.
My wife and i finally broke down and bought a modern flat screen tv.
The cord can later be reattached once it is routed through the wall.
No it is not.
If you ran the tv cord through the wall there must be an outlet receptacle nearby.
About 5 for the socket and box 2 for a plug and 7 for the cable.
If you want to safely run cables and you need to get power to your television or other devices but need an outlet.
I would like to hang it and hide the wires behind the wall.
Running anything with power other than in wall rated power wire romex in the wall is against code and will void your home owner s insurance iirc if a fire were to occur.