Domestic Lighting Circuit Diagram Uk

Lighting circuits are not usually complex or difficult to understand.

Domestic lighting circuit diagram uk. Each protected by a 5 amp fuse or 6 amp trip in the consumer unit. All the light wiring diagrams are available in the old and the new cable colours to avoid confusion. We have and extensive collection of common lighting arrangements with detailed lighting circuit diagrams light wiring diagrams and a breakdown of all the components used in lighting circuits. Power is taken from the consumer unit to the first junction box.

Let s have a look at a basic circuit diagram describing two way switch wiring. Instead of taking the feed wire from the consumer unit to the ceiling rose it is taken to the switch. The live is interrupted by the switch wiring and the circuit is carried on to the next junction box. So before we get stuck in to some wiring diagrams.

A cable is run from the junction box to the light usually via a ceiling rose. In addition most homes have low voltage electrical systems with transformers that convert standard power to a lower safer voltage typically from 6 to 12 volts for doorbells intercoms security systems low voltage interior and exterior lighting and the like. Radial circuits are used for lighting there is one lighting circuit on each lighting mcb lighting circuits are usually on a 6a mcb or 5a fuse though 10a can be used with some extra restrictions now removed in the 17th edition of the wiring regs for large circuits however if the area served is large more 5a or 6a circuits would in most cases be preferable. Similarly to a simple one way lighting.

In effect this is exactly the same wiring as the diagram on the top of the page but with the utilisation of the flat twin earth cable. Now you know how to wire a basic lighting circuit with one light switched at one point. Extending the lighting circuit. The second system in popular use is the junction box circuit or system.

However the fact that there is a switch included does seem to cause issues particularly when someone has purchased a fancy new light fitting from b q pulled down the old ceiling rose and then finds 9 wires in the ceiling and only 3 connections in the new fitting. Each house should ideally have at least two lighting circuits. Type one lighting circuit. The neutrals are connected together using a terminal connector.

The permanent live wire is wired into the switch and the switched live into the switched live terminal. This is an alternative way of wiring a lighting circuit. Whether it is the switching of a light from two different places inside a domestic dwelling or switching a series of lights in a commercial environment two way lighting circuits provide a cost effective and easy solution. It can also be used in domestic properties by using twin earth cable between the switches and 1core earth from the switches to the ceiling rose.