Plastering after the distribution box is installed
Plastering is generally part of the civil construction work for concealed distribution box installations, but not included in the electrical installation itself.
Surface vs. Concealed Installation
For surface-mounted distribution boxes, the box is fixed directly onto the wall using bolts or screws, and plastering is typically not required around the box . The installation mainly involves securing the box, wiring, and connecting electrical components. For concealed or embedded distribution boxes, the box is installed inside the wall, and the wall surface must be prepared to accommodate it. In this case, the reserved wall holes are slightly larger than the box dimensions, and after the box is fixed, the gap between the box and the wall is often filled with concrete or plaster to ensure stability and a smooth finish . The plastering, spraying, and painting are considered part of the civil construction work, not the electrical installation itself .
Installation Sequence
- Wall preparation: Reserve space in the wall for the box, slightly larger than the box dimensions.
- Box placement: Fix the distribution box securely using bolts, concrete, or other supports.
- Civil finishing: Plaster, spray, and paint the wall around the box to achieve a smooth surface.
- Electrical work: Install breakers, busbars, wiring, and other components inside the box.
- Testing and commissioning: Perform insulation, continuity, and functional tests before powering on .
Key Takeaways
- Plastering is not included in the electrical installation; it is part of the wall finishing done by civil construction.
- For surface-mounted boxes, plastering is usually unnecessary.
- For concealed boxes, plastering ensures the box is flush with the wall and provides a neat finish.
- Coordination between civil and electrical teams is important to ensure proper alignment and safety. In summary, whether plastering is involved depends on the installation type: concealed installations require plastering as part of civil work, while surface-mounted installations do not.
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