I’ve also been qualified tutor since 2008 and have taught electrical installation ‘C&G, EAL and Logic’ courses and we’ve been successfully teaching the Wiring Regulations online here at. Cut the cable to length if there is extra once you pull through the second box. Repeat on the other end and run it into your second switch box. Strip 6-9' on one end to expose the three separate wires, then run the first half into your first switch box. I’ve even run my own electrical contracting company. Run a 3-wire NM cable between the first and second boxes. I started as an apprentice electrician at the age of seventeen in 1982 and worked for many years as an electrician, a site foreman, a manager, a NICEIC Qualifying Supervisor, and a general manager. The first way of wiring uses a couple of Two-Way Light Switches with a three wire control (3 Wire Control). I believe this is called a three way switching circuit in some. Note all non brown conductors need to be sleeved brown. This video shows how to wire a two way light switching circuit, or a two way lighting circuit. If needed additional switching positions can be added through the use of intermediate lighting switches which are placed in between the two-way switches and work by crossing over the strappers when switched. All CPCs should be connected to terminals on the back-boxes and switch plates as necessary. On the second switch the 3-core connects to the same terminals as the first switch. The grey and black conductors are referred to as the ‘strappers’ This leaves the grey of the 3-core and blue of the Twin and Earth and these go together into the L2 connection of the switch. The brown of the 3-core connects on its own to the common on the light switch and the black of the 3-core along with the brown of the Twin and Earth go together into terminal L1 of the switch. Two-Way Switching ArrangementĪt the first switch we have the brown, blue and CPC of the Twin and Earth and along with the brown, black, grey and CPC of the 3-core cable. Don’t forget the brown sleeving on this blue conductor as before. These control a light from two or three switch locations, such as at the top and bottom of a stairwell, at either end of a hallway, or in a large room with multiple entrances. A three-way switch has three terminals a four-way has four. The circuit may have one or more lights in it. The most common household switch, a single-pole, has two terminals and simply turns power on or off. The Twin and Earth cable connects at the ceiling rose the same way as previously with the brown in the central ‘loop’ connection and the blue in the two terminal connection along with the brown line conductor of the lamp holder. A two way lighting circuit enables one circuit to be turned on or off by either of two switches. The switches used in this instance are two-way switches and have three connections which are called common, L1 and L2. One end of the bulb is connected with the Common Terminal of the second switch and another end of the Bulb is connected with the Neutral line of the AC power. The most common and easiest way of doing this is to link both of the light switches together using a 3-core and CPC PVC cable and have a Twin and Earth cable connecting one of the switches to the ceiling rose of the light to be switched. When a light needs to be switched on or off from two separate positions which is usually the case on stairs or landings, a two-way lighting switch arrangement can be used.
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