To install the bottom frame of a distribution box, securely position it on the installation surface, align it with expansion bolts, and fasten it firmly to ensure stability and proper alignment.

Step-by-Step Installation

1. Choose the Installation Location Select a dry, accessible area with good ventilation, away from water, flammable, or corrosive substances. For residential setups, the ideal height is around 1.5 meters above the ground, while industrial installations depend on surrounding equipment and space . 2. Mark and Drill Mounting Points Mark the positions for the expansion bolts on the wall or installation surface according to the bottom frame dimensions. Drill holes of appropriate size and insert expansion bolts to secure the frame . 3. Position the Bottom Frame Place the bottom frame of the distribution box onto the installation surface. Align the frame with the expansion bolts to ensure it sits level and stable. Check for any tilt or looseness before tightening . 4. Secure the Frame Tighten the screws or bolts firmly to fix the bottom frame in place. Ensure the frame is stable and can support the weight of the distribution box and internal components . 5. Prepare Wiring Cut the insulation of wires to the required length, leaving enough exposed conductor for secure terminal connections. Avoid leaving wires too long or too short to prevent poor contact or short circuits . 6. Connect Terminals Attach the input and output wires to the corresponding terminals: line to line, neutral to neutral, and ground to ground. Use a wire stripper or screwdriver to ensure tight and conductive connections . 7. Arrange Wires Neatly Dress and route all wires within the enclosure, securing them with cable ties. Leave space for heat dissipation and avoid contact with sharp edges . 8. Final Checks Perform an insulation resistance test to verify proper insulation between wires and the box. Conduct a circuit on/off test with a multimeter to ensure all connections are correct and functional . Following these steps ensures that the bottom frame of the distribution box is installed safely, securely, and ready for further assembly of internal components.