This sounds great but violates all the building codes for a variety of reasons: eddy currents, risk of electrocution if there’s a short somewhere, noise in telecom cables, etc.
You can absolutely put NM cable, etc, under a cover. It's just more trouble than it is worth. You still need the required setbacks from the wall, etc, and .. there's reasons why bored holes very low on the wall (like for a baseboard cover) could be problematic.
And for telecom / low voltage, you have a lot of freedom of how you do it.
You can absolutely put NM cable, etc, under a cover. It's just more trouble than it is worth. You still need the required setbacks from the wall, etc, and .. there's reasons why bored holes very low on the wall (like for a baseboard cover) could be problematic.
And for telecom / low voltage, you have a lot of freedom of how you do it.