Hello there,
I am trying to measure if my cold water pipes are good grounding points for ESD. I tried to measure the voltage between the mains outlet and the pipe. I live in Scandinavia. Here our mains voltage is 230VAC 50Hz. I tried to measure between one pin on the outlet and the pipe. The reading on the first pin was 142VAC. The reading on the other pin was 148VAC. The voltage between the two pins (not via the cold water pipe) was 226VAC.
This surprises me. I expected to see 230VAC between one pin and the pipe, and 0V between the other pin and the pipe. My flat doesn't have earth ground on any outlets.
Does what does these readings tell you? Do they mean that the cold water pipe a sound ESD-grounding point? Or is something wrong?
Thank you for your time.
Kind regards,
Marius
I am trying to measure if my cold water pipes are good grounding points for ESD. I tried to measure the voltage between the mains outlet and the pipe. I live in Scandinavia. Here our mains voltage is 230VAC 50Hz. I tried to measure between one pin on the outlet and the pipe. The reading on the first pin was 142VAC. The reading on the other pin was 148VAC. The voltage between the two pins (not via the cold water pipe) was 226VAC.
This surprises me. I expected to see 230VAC between one pin and the pipe, and 0V between the other pin and the pipe. My flat doesn't have earth ground on any outlets.
Does what does these readings tell you? Do they mean that the cold water pipe a sound ESD-grounding point? Or is something wrong?
Thank you for your time.
Kind regards,
Marius