Nepal Lighting Distribution Box Dimensions

Lighting distribution boxes in Nepal typically follow standard dimensions with tolerances of ±10%, designed for safe and organized power distribution.Typical Dimensions and ConstructionMaterial: 2 mm galvanized iron (GI) sheet for outdoor boxes; plastic or metal for indoor consumer units .Protection Rating: IP-55 for outdoor boxes to prevent dust and water ingress .Door and Locking: Slanting roof with 50 mm overhang, Godrej 3-position locking system, concealed hinges .Earthing: Two solid earthing points on either side .Bus Bars: Copper flat bars, typically 25x4 mm, with color-coded insulation or paint (Red, Yellow, Blue, Black) .Cable Glands: Heavy-duty, double compression type for incoming and outgoing cables .Internal Layout: Provision for one bus bar with 4-pole MCCB and one outgoing feeder with 2 sets of 3-pole MCCBs .Lighting Provision: Space for internal lighting inside the cabinet .Illustrative Dimensions (with ±10% tolerance)TypeHeight (mm)Width (mm)Depth (mm)MountingSmall Indoor DB300200120Flush/SurfaceMedium Indoor DB400300150Flush/SurfaceLarge Outdoor LTDB600500250Wall-mountedExtra-Large Outdoor LTDB800600300Wall-mountedThese dimensions are illustrative and may vary depending on manufacturer, capacity, and specific installation requirements. Suppliers in Nepal, such as Electra Electric, Rathi Switch, Junon Electrical, and Asem Lights, provide distribution boxes with these standard configurations .Notes for SelectionEnsure the IP rating matches the installation environment (IP-55 for outdoor, IP-21 or IP-30 for indoor).Verify MCCB compatibility and bus bar arrangement for the intended load.Consider mounting type (flush vs. surface) based on wall structure and space availability.Check for type-tested certification from approved laboratories for safety compliance . This information can be used to plan, procure, or design lighting distribution boxes in Nepal, ensuring compliance with local electrical standards and safe installation practices.