A time may come when you need to run electrical wiring through a masonry wall. For example, you may want to install an electrical socket on your home's exterior, requiring you to run electrical wiring from your basement circuit breaker box through the basement's masonry wall to the outside outlet. The electric wire needs extra protection from the masonry wall because the concrete's abrasiveness may remove the wire's protective insulation. Extra protection also guards the wire from moisture in the masonry.
- Skill level:
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Things you need
- Tape measure
- Polyvinyl chloride (PVC) pipe
- Masonry drill
- Masonry drill bit
- Caulking gun
Measure the collective diameter of all the electric wires you will run through the masonry wall. Bundle all of the wires together, and then measure the bundle's diameter. The diameter will determine the width of the polyvinyl chloride (PVC) needed to form a pipe sleeve.
Drill a hole in the masonry for the pipe sleeve. Begin by measuring the pipe sleeve's (the PVC's) outer diameter. Using a masonry drill bit that is slightly larger than the pipe sleeve's outer diameter, drill a hole through the masonry wall at the desired location.
Cut the pipe sleeve to the proper size. Measure the masonry wall's thickness. Cut the pipe sleeve so that it will stick out of each side of the wall about 1 inch.
Slide the pipe sleeve into the masonry wall.
Slide the electric wiring into the pipe sleeve.
Install the electric wiring as necessary for your specific application.
Caulk around the pipe sleeve where it meets each side of the masonry wall. That will provide a weather-tight seal. Depending on the application, you may want to fill the annular space in the pipe sleeve with caulking.
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