How to install electrical wiring

 


Many DIY and remodelling projects require either new wiring or the replacement of old, worn-out or burnt-out connections. For extensive work, it is obviously best to hire an electrician, but some projects can be done by the average DIYer. 

Wiring basics

When working with wiring, always disconnect the power at the breaker box first before starting any actual work. Then check the surrounding area with a neon tester to make sure the power is off and you can proceed safely.

Most wiring in a house is either 12-core or 14-core. When connecting existing wiring to an appliance or device, you usually follow the colour code by connecting each colour of wire to its corresponding twin. For example, light switches are operated with the black cable and connected directly to another black cable already in the system.

Connecting to the socket

As a rule, the wiring to be installed is connected to the last socket of the current cable run. You can determine this by looking for the socket whose wires are connected to only two of the four terminal screws. Make sure the circuit is switched off, then remove the covers of each socket to find the socket you are looking for.

Attaching the cable for rewiring

Loosen the screws securing the socket and remove it to do the wiring. Make sure you attach the correct size cable. If you are using 12-gauge cables, take 12-gauge cables; the same applies to 14-gauge cables. The white cable is connected to the chromium-plated terminal of the socket, while the black cable is connected to the brass terminal. The earth cable is attached to the socket itself, but only if it is made of metal.

Adding new wiring from a junction box

New wiring can also be installed in a junction box, provided it has sufficient capacity. Once the power is off, carefully trace the connecting wires back to the box to make sure you are not connecting a 240-volt supply to a 120-volt outlet or vice versa.

To connect the new wiring, first locate the main supply line by tracing the white wires, as all of these wires are connected to the white wire of the supply line. Unplug the unused connector and run the new wiring from the box. Secure the cable to the junction box with clamps.

Call the Emergency Electrician in Bolton. We are your right contact partner. Furthermore, we are 24 hours available. Call us now, 01204918005.

Location: Bolton, UK

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