Reserve a hole slightly larger than the distribution box dimensions, with depth equal to the box plus wall plaster, to ensure proper fit and secure installation.

Steps to Leave a Hole

1. Determine Box Dimensions: Measure the length, width, and depth of the distribution box. For concealed installation, the reserved hole should be about 20mm larger in length and width than the box itself, and the depth should equal the box thickness plus the plastering layer on the wall . 2. Mark the Wall: Use a pencil or marker to outline the hole on the wall at the desired height (typically around 1.5 meters for residential setups) and ensure it is level and accessible for maintenance . 3. Cut or Drill the Wall: Depending on the wall material, use an electric drill, chisel, or wall saw to create the hole. Ensure the edges are clean and straight to allow the box to sit flush with the wall surface . 4. Secure the Box: Place the distribution box into the hole. If embedding in masonry, fill the gap between the box and the wall with concrete or plaster to hold it firmly. Ensure the box is horizontal and vertical, with vertical deviation not exceeding 3mm . 5. Finish the Wall: After securing the box, apply plaster or wall finishing around the edges to create a smooth, gap-free surface. Coat contact areas with anti-corrosion paint if necessary . 6. Leave Space for Wiring and Ventilation: Ensure there is enough room inside the box for wiring, circuit breakers, and future maintenance. Avoid tight fits that could damage wires or obstruct heat dissipation . By following these steps, the distribution box will be properly embedded, safe, and accessible for electrical connections and future maintenance.