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It should be caused by too much dampness in the wall or a leak in the water pipe in the wall on the upper floor.
It is dangerous to have water in a wall outlet. It is easy to cause short circuits. Find out the leak point and fix it before you can use it with peace of mind!
Generally no, there is no danger, and it is recommended to use a splash-proof and waterproof socket for safety.
It should be the problem of your pressurized pump, 300 watts is normal and there will not be a large current, and the pressurized pump may leak or have the wrong wiring.
It depends on whether the wires of the air conditioner socket are allowed? Look at how many squares of the line 4 squares should be per question! If you have a square depends on how big the air conditioner you are! >>>More
This is when your ground wire is not reliably grounded.
Yes, there's not that kind of leaky plug now.