Is it common to test cabinet screw heads for electrical current in case they may have interfered with wire? Some of the 2x4 behind where I am hanging cabinets have wire running along, in addition to perpendicular, which can more easily be avoided. I would like to use 3-1/8" screws where I have upright 2x4 (as opposed to shorter screws, which would be less risky but less strong too).
If yes what can I use to send the current to, if there is one? Should I somehow send it to an adjacent power outlet?