Is the switch on and off with a screwdriver?
If you really want to live operation, first suggested that the landlord should stand in good insulation board (foot not directly steps), the screwdriver must use insulation good plastic handle, so that it can be charged operation, but the operation should pay attention to whether there is zero line in, and do not meet the zero line and in the line of attention, as far as possible to remove a root, remove a wire with a cloth glue down.
Live operation is very common for skilled electricians, but it will probably not apply to the landlord, because you can raise this question, it has already explained that the landlord is not familiar with the strong electricity.
