The back of a distribution box can be securely fixed using wall mounting with expansion bolts, ground mounting on a solid base, or embedding in a wall with concrete, depending on the installation environment.

Wall Mounting

For most indoor installations, the distribution box is mounted on a wall. Use expansion bolts or screws to attach the box firmly to a solid wall. Ensure the wall can support the weight of the box and its electrical components. The bottom edge of the box is typically installed 1.5 to 1.8 meters above the ground for convenient operation and inspection. For smaller boxes, wood bricks can be embedded at the installation points, and wood screws can secure the box to the bricks ( ).

Ground Mounting

In outdoor or frequently accessed areas, the box may be mounted on the ground. Use a solid base or stand to support the cabinet and ensure stability. The base should prevent tilting or movement due to vibration or environmental factors ( ).

Embedded or Concealed Installation

For concealed installations, the box can be embedded in a wall. Reserve a hole slightly larger than the box dimensions (about 20mm extra) and fill the gap between the box and wall with concrete. Ensure the box is level, horizontal, and vertical, with a vertical deviation of no more than 3mm. Coat contact areas with anti-corrosion paint if necessary ( ).

Bracket or Suspended Fixing

In industrial or special applications, the box may be fixed to a bracket, frame, or suspended from the ceiling using hooks or chains. This method is suitable for environments where floor or wall mounting is impractical ( ).

Additional Considerations

• Ensure proper grounding of the metal box and internal components.
• Maintain ventilation and accessibility for maintenance.
• Use high-quality mounting hardware appropriate for the box weight and environment.
• Follow local electrical codes and safety regulations during installation ( ). By selecting the appropriate fixing method and ensuring secure attachment, the distribution box will remain stable, safe, and compliant with electrical standards.