Hi all!
I'm renovating my house, and the ground net wasn't connected to anything yet.
I was working while standing on wet ground outside, and I felt a few times a "shock" or more like a low amp AC current when I touched a grounded metal on the lamp of fan.
So I made a priority to finally connect the new ground pin to the houses ground net.
Before connecting I checked what happened when the ground net wire and ground pin wire touched, I could see very tiny sparks.
I wanted to test what circuit breaker group was the issue, but I did not get anything useful out of those tests.. I think...
(We have 230v AC in the Netherlands)
I first measured the voltage when all breakers were on, using a multimeter between the two wires, it was 49,5v AC, and measuring current using the same multimeter at 3,3mA.
I guess this was enough to "shock" me...?
Then I started measuring with all breakers off, and is was 2,5v at 0mA
Then measured every breaker solo (only one breaker on at a time)...
breaker 1 on solo = 97,8v - 0,8mA
breaker 2 on solo = 114,6v - 3,3mA
breaker 3 on solo = 121v - 4,7mA
breaker 4 on solo = 62,4v - 3,7mA
breaker 5 on solo = 52,3v - 3,7mA
breaker 6 on solo = 53,2v - 3,8mA
breaker 7 on solo = 53,2v - 3,3mA
So I see no single breaker/circuit being the cause for the ground leak, every circuit has some leakage it seems.
I also tested all breakers on and turning each one on and off, sometimes the leakages becomes bigger, sometimes less when turning a breaker on.
But still, it's enough to "shock" me. I'm not sure if I measured correctly, the amps are a short, and voltage is not.
Is this leakage normal?
At most it's around 0.5watts of energy flowing to ground it seems... but why?
Any insight is useful