Hi @max-pro!

You explained in a good way about the circuits of socket connections. Actually I am afraid of electricity and try to restrain from live connections.

But yesterday I had to make the connection of lights on my own as they were not working. When I checked them I came to know one wire was out of the circuit.

Firstly I was not touching it but remembering necessity is the mother of invention I got the wires opened them carefully and then plugged in in the right place. Then I gave it a try and Alhamdulillah it worked well without any loss and problems.