Thanks, everyone. I'm glad that I'm not the only one who feels that this is one of those points of Code that are open to interpretation.
FWIW, I usually try to get the #4 down at least 12" deep, figuring that that'll keep it out of the way of a roto-tiller or lawn aerator.
Smurf, why use metallic conduit? Schedule 80 is the way to go. But if you do use IMC or GRC, bond it at BOTH ends.
Cliff
