I had to change a ceiling lamp, electrical installation (Europe, 240V) is quite old and i've no idea how it works.
The old lamp had 3 bulbs and a wall double switch can light up 2 of the bulbs and/or the other one.
When i removed the old lamp, there were 3 wires. When i tested each one using a screwdriver phase meter, one of the wires made the screwdriver light up (i.e. wire was hot), the other ones didn't. This happened when the switch was off, of course. This made me flip the breaker for the whole room so that no wire would light up the phase meter.
I hooked up the wire that tested hot to the L in the scheme below (brown lamp wires) and one of the other wires to N (blue lamp wires). When i flip the right switch, the lamp works as expected.
However when i tested the L, Ground, and N sockets/ports, when the switch is OFF, all of them caused the phase meter to light up. Any metal parts on the lamp body itself also cause the screwdriver phase meter to light up.
Will i cause fire and/or death to whoever touches the lamp while changing bulbs?