45 years ago at a major hospital a cleaner couldn't find a free plug for her vacuum cleaner - so took one out, plugged in, did her job and then plugged the original one back in. Would have been fine if it hadn't been the ventilator. The kettle / fridge exchange reminded me of this and that disconnecting plugs that need to be on the whole time was a periodically recurring event during my working career (as was turning off switches to save electricity without realising that some things do need to stay switched on - like the main server).