Is it possible to connect a fan parallel to the luminaire if the switch breaks zero?
I connect the fan parallel to the light bulb, the switch breaks the zero (there is no possibility to redo it). And now the indicator when the light is off shows on two wires that should power the fan, two phases, when the light is on, then phase and zero. Is it possible to connect a fan to these wires or can I redo something?
You can connect! The phase will be on two wires to the switch. The phase to zero through the load is constantly connected. You can try to remake in the distribution box.