Given that the following are true.
- They are the same size.
- They take the same amount of work to install.
- Doubles are twice as useful.
- Double adapters are a thing.
Why do single electrical receptacles even exist? I was looking at the plans for a house and some of the power points were specified to be singles. Is it a code/standards compliance issue? It can't be to make a house $2 cheaper, they wouldn't be worth manufacturing if that were the case.
Someone edited this to say "Receptacles". I assume that's an Americanism? Sounds very odd to me.
Standard Australian power points. They're the same size, fit in the same hole, and have the socket in almost the same point. I've seen singles mostly in older houses. I thought maybe doubles used to be more expensive, or maybe they just ran out and put a single in. But then I saw the building's wiring overlay and somebody decided - in the planning stage - that for some reason that point needed to be a single. I know it's of no real importance, but this has been bugging me for years. This is just an average room in an average suburban house. No basement pump. (Cultural note: Australian houses don't have basements. Until recently, we tended to spread out horizontally, not vertically.) There's nothing that would be damaged if the power failed. Except the fridge, and I've never seen a fridge with it's own circuit.