That's NEC text Al. I didn't write it. But if you stand on wet concrete in bare feet, and grab a leg of 220, don't say they didn't warn you!......lol

EVERY material, including your body, pool water, even the air you breath is conductive. Some are more resistive than others, but when you BURY a metal mesh, you have an EARTH GROUND whether you know it or not. (And you EE's should certainly know that!)

ANY resistive element will create a voltage drop across it's length when connected to a source e, so relying on a utility co. "service ground", depends on the conductivity/current carrying capacity of the wire and the connection quality of EVERY TERMINAL in between you and the generator. Lose connection quality at ANY POINT and you've created a voltage drop across that point and in series with the load. And bingo, you've got yourself a ground loop. (just remember, on the murphy side of the equation, we're talking about little people standing in pools of ionized water and carrying long metal poles around)

I'm not here to make enemies, but to learn about pools and make a few friendly acquaintances. I'm not going to take the other side of posturing that will put someone's family in jeopardy, so this'll be my last post on the topic.

I stand behind everything I've written and practice what I preach My family is too important to me, not to take the best precautions.

STS