[PA Engineer]

If you're interested, he said that the only sure-fire Faraday cage was a solid box made of (preferably) copper or aluminum that, when closed, conducted electricity as if it had been welded shut. It has to be grounded with a nine-foot copper rod hammered into the earth and welded to the box itself through copper wire.

Are you sure about that grounding part?

[danielmryan]

Are you sure about that grounding part?

That's what I remember reading. Is it wrong?