Who did not encounter the situation when it is impossible to make out what is connected in the pile of wires, and still there is not enough free space in the outlet and you have to puzzle over what you can do without, what can be temporarily turned off so that you can use the most urgent necessary electrical appliance. Often such constant switching options end with overloading the extension cord, or short circuit, or current with the next pulling out a fork from a rosette in a pile of wires.
