Can an extension cord be connected to such a red socket in the floorbox? Sometimes there is no electricity in these white sockets and in the red ones all the time. Why is that some kind of separate power line? It would be best to connect the entire extension cord to such a red socket, and a computer, monitor, etc. to it.
And also, what is the best way to connect the cable to such a socket, because it is difficult to get to the one under the floor? It is easier to first insert the red plug into the socket and then connect the cable, or is it better to put the red plug on the cable first and then aim at the socket in the floorbox? I've never done this, and just for the sake of peace, I'd rather plug my computer into this socket.
And also, what is the best way to connect the cable to such a socket, because it is difficult to get to the one under the floor? It is easier to first insert the red plug into the socket and then connect the cable, or is it better to put the red plug on the cable first and then aim at the socket in the floorbox? I've never done this, and just for the sake of peace, I'd rather plug my computer into this socket.