On Wed, 04 Jan 2017 18:31:06 -0000, trader_4 wrote:

On Wednesday, January 4, 2017 at 12:58:25 PM UTC-5, James Wilkinson Sword wrote:
Somebody in one of these two groups recently said that a concrete based house means you're earthed. Concrete is a bloody good insulator!

Sorry, can't find the post it was mentioned in.



Wrong as usual. Concrete that's been cured and then dried out,
kept away from moisture, may not be a good conductor. But building
concrete, a foundation is such a good conductor, it's the preferred
ground for the building electrical service. An electrode is placed
inside it before the pour.

Only if the concrete stays wet. Which won't happen unless it rains a lot.

--
I don't have OCD - I'm just defragmenting the universe.