A concealed distribution box can be safely installed by embedding it in the wall, securing it firmly, and covering it with a custom door or cabinet for aesthetic concealment.

Step 1: Prepare the Wall Opening

• Reserve a hole in the wall 20mm larger than the distribution box in both length and width, with a depth equal to the box thickness plus plastering thickness ( ).
• Ensure the wall area is structurally sound to support the box and door.

Step 2: Fix the Distribution Box

• Embed the box into the wall and fill gaps with concrete if using masonry for stability ( ).
• Ensure the box is level and plumb, with vertical deviation not exceeding 3mm.
• Apply anti-corrosion paint to contact surfaces between the box and wall to prevent rust ( ).

Step 3: Electrical Wiring

• Connect the power line to the intermediate contact terminal and the load line to the threaded terminal to prevent electric shock during fuse replacement ( ).
• Install AC, DC, or multi-voltage circuits with clear labeling.
• Separate neutral (N) and protective earth (PE) busbars, and number all connections for clarity ( ).
• Dress wires neatly, secure with cable ties, and leave space for heat dissipation ( ).

Step 4: Concealing the Box

• Build a custom cabinet or door that matches the wall or interior design ( ). Options include:
  • Small wooden cabinet painted or finished to blend with the wall.
  • Storage space or closet that doubles as a functional area while hiding the box.
• Ensure the door or cabinet allows easy access for maintenance and complies with safety regulations ( ).

Step 5: Final Checks

• Perform visual inspection and multimeter tests to verify proper wiring and insulation ( ).
• Label all circuits clearly for future troubleshooting.
• Ensure the concealed door opens smoothly without obstructing access to breakers or fuses. By following these steps, you can achieve a safe, functional, and aesthetically concealed distribution box that meets electrical standards and allows convenient maintenance.