Opening a hole in a masonry electrical distribution box

For Brick/Block: Use a hammer drill and masonry bit to drill holes for the box's mounting hardware or to create a space for the box. For Concrete: Install the box within the formwork before the concrete pour. Due to previous treatment, it may be difficult to find mortar joints. Once the location is determined, use special screws designed for stone. Installing a masonry electrical box might sound like a job for a superhero, but don't worry—you've got this! With a bit of grit and the right tools, you can tackle this project without turning your living room into a scene from a disaster movie. Regularly inspect and maintain your installation to ensure long-lasting safety. Modifying an electrical box is necessary when standard knockouts do not align with custom wiring plans, such as adding non-standard conduit sizes or unique electrical devices. [pdf]