Lighting Distribution Box Specifications and Dimensions Table
Lighting distribution boxes come in various standard sizes, typically ranging from compact wall-mounted units to larger floor-standing enclosures, with dimensions selected based on wiring capacity, device count, and installation type.
Standard Dimensions Overview
Lighting distribution boxes, also known as consumer units or distribution boards, are available in multiple configurations depending on application, mounting type, and internal components . Typical dimensions are influenced by the number of outgoing circuits, incomer devices, and space for wiring.
Wall-Mounted Distribution Boxes
- Small/Compact Units: 200 × 200 × 120 mm up to 400 × 300 × 150 mm
- Medium Units: 400 × 400 × 150 mm up to 600 × 400 × 200 mm
- Applications: Residential lighting, small commercial installations, or limited circuit counts
Floor-Standing or Large Enclosures
- Height: 1600–2200 mm
- Width: 600–1800 mm
- Depth: 300–600 mm
- Applications: Industrial or large commercial lighting systems, multiple incomers, and high circuit density
Junction Box / Compact Lighting Boxes
- Rectangular Boxes: 2 inches wide × 4 inches tall, depth 1.5–3.5 inches
- Round/Octagon Boxes: Common for ceiling-mounted fixtures, depth varies 1.5–2.125 inches
- Applications: Single light switches, outlets, or small lighting circuits; suitable for splicing multiple wires safely
Mounting Types
- Flush Mounting: Installed inside walls for a clean finish
- Surface Mounting: Hung on wall surfaces, often used in industrial or mining sites
- Modular Din Rail Components: Allow flexible installation of MCBs, RCDs, and terminal blocks
Selection Considerations
- Internal Volume: Ensure sufficient space for wire fill and device installation
- Ingress Protection (IP) / NEMA Rating: Match environmental and safety requirements
- Future Expansion: Choose a box with extra capacity for additional circuits or devices
- Device Compatibility: Verify space for incomers, MCBs, RCCBs, and busbars
Example Dimension Table
| Box Type | Width (mm) | Height (mm) | Depth (mm) | Typical Use |
|---|---|---|---|---|
| Small Wall-Mount | 200 | 200 | 120 | Residential lighting, single-phase circuits |
| Medium Wall-Mount | 400 | 400 | 150 | Multi-circuit residential or small commercial |
| Large Wall-Mount | 600 | 400 | 200 | Commercial lighting, multiple incomers |
| Floor-Standing | 600–1800 | 1600–2200 | 300–600 | Industrial lighting, high-density circuits |
| Junction Box | 50 | 100 | 40–90 | Single switch or outlet, ceiling fixtures |
This table provides a practical reference for selecting lighting distribution boxes based on installation type, circuit requirements, and space constraints. Always verify dimensions with the manufacturer's catalog and ensure compliance with local electrical codes .
Factory Distribution Board Specifications | PDF | Electrical Connector
This document outlines the specifications for the supply of lighting and power distribution boards, including technical requirements
Factory Intelligent panelboard for lighting control and energy
The manufacturer of the lighting control panelboard shall be regularly engaged in manufacture of electrical distribution equipment,
Factory Distribution box catalogue | PDF
This document provides specifications for various distribution boxes including dimensions, mounting sizes, and number of ways. It
Factory TECHNICAL SPECIFICATION FOR LT DISTRIBUTION BOX
General Technical Particulars for LT Distribution Boxes : - The L.T. Distribution Boxes should be of the dimensions as per the
Factory SELECT YOUR DISTRIBUTIONSYSTEM
Distribution is an essential function for the electrical panels, as well as for control and circuit protection. As well as purely technical
Factory MNS® Low Voltage Distribution Board and Power Cabinet
Features ABB distribution board and power Cabinet conform to GB7251.3-2006. Product includes distribution board, lighting control
Factory TECHNICAL SPECIFICATIONS FOR A. C. DISTRIBUTION BOARD
SCOPE: This specification covers the design, manufacturing, testing at works and supply of Indoor type A.C. Distribution Boards for
Factory The Lighting Handbook
A lighting management system makes sure that exhibits which are sensitive to light are exposed only to the amount of light that is
Factory Lighting Distribution Box Size Specifications Table
This guide explains standard electrical box dimensions by type, compares common sizes, and helps you select the right box for
Factory Lighting Distribution Panel
Lighting Distribution Panel Lighting Panel (LP) sub-distribution boards offer the right low voltage (LV) solution for large buildings by
Factory High-Quality Electrical Lighting Distribution Boxes Explained
High-quality electrical lighting distribution boxes are indispensable components in modern lighting systems, offering a combination of
Factory Main Lighting Distribution Board (LDB)
DOHO is a leading lighting distribution board and other safety equipment for industrial, commercial, and
Factory Distribution Boards & Consumer Units
Clear detailed description of each size and easy to select with the ordering codes. Box with four studs and adjustable nuts for easy fit
Factory Distribution Boxes
Get the best quality distribution boxes & other lighting with TradeSparky - UK electrical wholesaler for domestic and industrial supply.
Factory DISTRIBUTION BOARDS CATALOG
Designed by BAHRA, the Load Centers (LC) use the best selection of materials, cutting edge technology and class leading features
Factory 12 Types of Electrical Boxes and How to Choose
Learn about the many common types of wall and ceiling electrical boxes for switches, outlets, light fixtures, ceiling
Factory Light Box Data sheet
Lightbox dimensions are custom specified. To begin, select from 4 possible depth/heights: Then specify width and overall length.
Factory DRAFT SPECIFICATION FOR L. T. DISTRIBUTION BOX OF
DRAFT SPECIFICATION FOR L. T. DISTRIBUTION BOX OF DISTRIBUTION TRANSFORMER (DTR) OF DIFFERENT RATINGS
Factory Distribution Box Specs
It performs well in wet locations with the water-proof rating of IP66. With the maximum carrying capacity of 6000W, it can be applied
Factory DISTRIBUTION BOARDS CATALOG
Table (1) ITEM DESCRIPTION Standard IEC61439-1&3 Busbar Rating (AFW) 100, 250 No of Phase 3 Voltage Rating (V)-AC (50/60
Factory Distribution Boards & Consumer Units
Distribution boards, together with modular ABB system pro M Compact protection devices and Modular Din Rail Components, can be
Factory 5 Types of Electrical Boxes
Learn about the types of electrical boxes you can use for your home wiring project. From junction boxes to work
Factory Distribution Box and Selection Guide: Internal Structure, Components
Learn how to choose a distribution box and understand its internal structure, including MCBs, busbars, neutral bars,