You betcha, lads and lassies. I haven't heard of an astronomical type being injured by such an event but I sure have heard of people being killed by outside Christmas lights.
240 volts is dangerous.
Please keep in mind that, for practical purposes, some power points might not be protected by a balanced current device. Typically these will be found where refrigerators (or even washing machines and other wet atmosphere equipment is involved). This is because, typically, there will be found small leakage current due to moisture (usually condensation).
If you do have a detection device installed please keep in mind that it will not cover such circuits. Should your electrician have installed things correctly then it should be clearly marked. Alas, this is not always the case. It's easy to check though (it might mean resetting a few clocks) by manually tripping the device(s) whilst leaving the main isolating switch on and ensuring that the outlet you will be using is 'dead'.
If you must use an unprotected outlet then, as already mentioned, use a protected power board or dedicated sensor between you and the outlet to give you some protection.
Adrian, a timely reminder indeed.
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