My flat is fitted with switchable sockets as per below:
Please settle an argument a friend and I are having: if a socket is switched "on", is it wasting electricity if nothing is actually plugged into it? If so, any idea how much?
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With nothing plugged into the power point, there is no closed circuit, i.e. no connection, so no current flow. Simple electrical theory...switch off, no closed circuit, thus no power flow. Unless, of course, there is a light of some kind which illuminates when the switch is turned on. The light will consume a minimal amount of power. But minus an indicator light, absolutely not.