Finding Hidden AC Electrical Wall Outlets
When AC outlets get covered by drywall, it really isn't that unusual.
But the covered boxes, and even switches are not that easy to see afterward where the
they are nailed onto stud framing.
Place a straightedge across the wall to find bows. A three foot level, and cast a harsh halogen light
across the wall to reveal bowing.
Any location that is suspect should be verified with a stud finder,
since they are nailed to wood, and run the metal/electrical sensors
for the wiring if your unit is so equipped.
Another way is have a skilled electrician seek out the outlet with a tone generator
to detect its location. These connect with the early wiring and a remote is
run along the signal of the internal wiring.
To prevent the outlets from being covered, draw out the rooms with receptacles
before wallboarding.
Take great care when cutting the discovered receptacles out. Since they are finish-attached
with screws likely and could be under tension, take caution to preventing
damage to the wiring and outlet. Using a shallow-depth zip tool rather than by sawing. The power
should of off when cutting them out.