In my house there is a switch in every room that controls an outlet. I’ve asked my electrician to remove that so that the outlet is always on.
He says it’s safer to have a “control switch” but I can’t think of a good reason why.
What am I missing?
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You may have noticed that you can walk into a room that you've never been in before, and reach for a light switch, your hand has a really good chance of finding it. It's almost like magic, and it's so universal that people take it for granted.
Actually, it's no accident. It's required by both the electrical and the building codes. Every room must have a light, and the light must be operated in a switch located at -- well, your hand knows.
Here's another non-accident. Ever go up a stairway, go the first couple of steps and then your feet just know what to do? That's because of a rule that says on a stairway, every step's rise and run must be identical. This is what happens if it's not.
This is one of literally a thousand rules in the Building Codes designed to keep people safe.
Normally, Codes require that the light switch operate an overhead light or other built-in lights - sconces, cove lighting, etc. However, builders lobbied to get an exception to allow a switched receptacle instead -- on the presumption that someone would plug a floor lamp into that receptacle, and be contented with that as the room light, and switch the light only at the switch.
The reason builders wanted this is, it's cheaper.
Of course, this is a bad plan for exactly the reasons you are observing - #1 people will switch the light off at the light, and #2 it renders the receptacle unusable as a plain receptacle. This is especially bad with the consumer electronics revolution, where people have an exponentially increasing number of things to plug in other than lamps.
Unfortunately, you only have 2 options for eliminating the receptacles.
A number of years ago it was required by building code to have a switched receptacle if there are no ceiling fixtures in a room. It still is I am certain. It is a safety issue for entering a room when it is dark. If you have a ceiling light, then I believe it can go, but to remove all the related wiring and switch will require drywall work and/or a blank plate where the switch used to be. That is unless code allows simply wire nutting both ends of the swicth leg and leaving them in the outlet/switch boxes. Then it would be just a blank plate only, where the switch is eliminated.
A remote switch for an power outlet can also be a safety measure.
When I was a child, a TV appliance caught fire during the night and we lost part of our home. When my parents got to build their own house later, they put a master switch on each room that would control all power outlets in that room. Every night they would make the rounds cutting off power to any appliance in the house. It is also very convenient as it allows you to unplug everything in one go, I miss that feature from my childhood home.
From where I am, there is no code requiring switches to power outlets but I have installed one for my autistic son's TV. I require that all appliances not in use be unplugged to save on the electric bill. The outlet switch however makes it easier for my son to just leave the TV plugged in reducing the chances for him to be electrocuted.