A standard light switch box is typically 16mm deep.
While socket boxes often have a depth of 25mm, light switch boxes are generally shallower to accommodate the slimmer profile of a light switch mechanism. The depth can sometimes vary slightly depending on the manufacturer and specific type of box.
Here's a more detailed breakdown:
-
Standard Depth: 16mm is the most common depth for light switch back boxes.
-
Purpose: This shallower depth is adequate since light switches don't require as much internal space as sockets, which need room for larger wiring connections.
-
Installation Tip: When creating the recess for the back box, regularly check the depth to ensure a snug fit without excessive space behind the box. This helps prevent debris from accumulating and affecting the switch.
