Electricians

583 readers

1 users here now

founded 2 years ago

MODERATORS

puppymartini@lemmy.world

20V AC between slab and electrical ground (lemmy.ca)

submitted 5 months ago by GreatBlueHeron@lemmy.ca to c/electricians@lemmy.world

7 comments fedilink hide all child comments

I've just had a new house built in Atlantic Canada. This morning I noticed a bit of a tingle from my coffee machine when I touched it with wet hands. The machine has a grounded (3 pin) plug and I checked - it has 0V between the parts I touched (the entire metal outer case) and the ground socket in the outlet. So, I got curious and did some more measurements. It turns out there is 20V AC (and about 300mV DC) between the ground in my outlets and me when I'm standing on my floor (sealed concrete slab) with bare feet.

I assume this isn't good?

I'll be calling the electrician that wired the house in the morning, but I'd appreciate any insights you might have.

you are viewing a single comment's thread
view the rest of the comments

[–] f43r05@lemmy.ca 0 points 4 months ago (1 children)

Is it possible that rebar running parallel to a mains power run is inducting current to the slab?

[–] GreatBlueHeron@lemmy.ca 2 points 4 months ago

No - the main comes down from above.