Help finding wires in the junction box
Hello! The question is, old aluminum wiring (all wires are of the same color). There are three bundles of wires in the junction box, how to determine where the phase is, where is zero, and where is the connection of the switch and the bulb? And accordingly, how to determine this? And how exactly? Thank)
The fact is that the wiring is not the same type and almost always the wiring is mounted in different ways. It is not known what exactly is connected in these bundles and where each wire goes. In order to understand where this or that wire goes, you need to ring all the wires, first disconnecting the wiring and checking the absence of voltage in order to avoid electric shock.
The only option is to untwist the twist of wires, having previously marked in which twist each wire was, and ring each of the wires relative to sockets, switch, chandelier, etc. - that is, those elements that are connected in this junction box. Do not define it in any other way if the wires are not marked - only a dial tone. After the calls, mark each wire in order to know in the future which wire is going where.
The dialing can be done with a multimeter in the dialing mode or with any tester that checks the integrity of the circuits.