I think Mos has it right. One thing to consider if you're drilling. CALL DIG-ALERT FIRST. I wanted to bore some holes for getting water deep in the ground for some trees we planted. The guy for the electrical detection- our electric is underground- was late because a person was setting a post next to the house and hit the 220V coming in, and the tester was called in by first responders to verify exactly where the wires were. Fatality.

The Other Steven