Installation of the distribution box on the interior wall

A distribution box can be safely installed inside a wall by embedding it flush, securing it with expansion or dovetail bolts, properly grounding, and carefully arranging internal wiring.Site Preparation and PositioningChoose a dry, ventilated, and accessible location away from water, flammable, or corrosive substances. The box should be positioned at a convenient height (typically around 1.5 meters) for maintenance and inspection, and close to the main power supply for easy connection . Mark the installation points on the wall and drill holes for expansion bolts or dovetail anchors, ensuring the wall structure can support the box and its maximum load .Mounting the BoxEmbed the box flush with the wall so that the front panel is level with the wall surface .Secure the box using expansion bolts, dovetail bolts, or pull bolts depending on whether the wall is solid or hollow .Check verticality and levelness using a spirit level; adjust with pad iron if necessary, but do not exceed three layers .For heavier boxes, consider floor pedestals or additional support to reduce stress on fasteners .Wiring and Internal ConnectionsPrepare wires by stripping insulation to the appropriate length and following color coding standards: line to line, neutral to neutral, and ground to ground .Install circuit breakers and protective devices according to load requirements, ensuring each circuit has its own protection .Connect busbars and terminals carefully, applying neutral Vaseline to contact surfaces if required, and maintain proper spacing to avoid short circuits .Arrange wires neatly inside the enclosure, using cable ties and leaving space for heat dissipation. Avoid tangling or contact with sharp edges .Grounding and SafetyGround each cabinet panel separately, connecting to the foundation steel with copper wire and using spring washers to prevent loosening .Connect cabinet doors to the PE row with braided copper wire for reliable grounding .Perform insulation resistance and continuity tests before powering on to ensure all connections meet safety standards .Final Checks and LabelingEnsure the box is level, stable, and free of tilt or looseness .Label all circuits and devices for easy identification during maintenance .Maintain manufacturer-recommended clearances and ensure doors can open fully without obstruction .Schedule regular inspections and maintenance to ensure long-term reliability . By following these steps, a wall-embedded distribution box can be installed safely, with proper grounding, secure mounting, and organized internal wiring, ensuring both operational safety and ease of future maintenance.