So I've been following the forum for years and now it's time for a question i can't seem to figure out myself.
My psu for a 20m led strip died, so a friend gave an old modified atx psu as a temporary replacement.
I wired it up, plugged in and placed it next to another led psu, only to get immediately zapped.
I moved it away and put my mains tester on the chassis.
The metal frame was getting 220v that I didn't feel as long as the psu wasn't in contact with the nearby one.
Oddly enough the tester would turn off when I simultaneously touched the chassis myself, as if I'd absorb the voltage without feeling anything.
Turned out the psu cable was damaged and only the live wire was connected. No neutral, no ground.
However, can someone explain how would this happen? Ok the psu only got the live 220v.
Why was it transferred to the chassis?
Why was I not zapped when touching it?
Why would the voltage drop when I touched it?
Why was I zapped only when the metal frame touched a nearby working psu?
My psu for a 20m led strip died, so a friend gave an old modified atx psu as a temporary replacement.
I wired it up, plugged in and placed it next to another led psu, only to get immediately zapped.
I moved it away and put my mains tester on the chassis.
The metal frame was getting 220v that I didn't feel as long as the psu wasn't in contact with the nearby one.
Oddly enough the tester would turn off when I simultaneously touched the chassis myself, as if I'd absorb the voltage without feeling anything.
Turned out the psu cable was damaged and only the live wire was connected. No neutral, no ground.
However, can someone explain how would this happen? Ok the psu only got the live 220v.
Why was it transferred to the chassis?
Why was I not zapped when touching it?
Why would the voltage drop when I touched it?
Why was I zapped only when the metal frame touched a nearby working psu?