Drilling or penetrating areas which contain or may contain energized electrical conductors is
considered "working near". Such work requires extreme caution and good planning. Drills or
penetrating equipment must be grounded so that accidental contact with an unexpected
energized electrical conductor will be cleared quickly by the circuit protective device.
Double insulated equipment cannot be counted on to provide protection when accidental
contact is made with energized circuits. A drill bit stop should be used to limit the distance of
any penetration.