Live wire neutral wire earth wire

The size of the current flowing depends on the potential difference ( voltage) . The fuse fits next to the live wire . The blue neutral wire goes to the left, the brown live wire to the right. A mains electricity cable contains two or three inner wires. Many electrical appliances - including cookers, washing machines and refrigerators - have metal cases.

Earthing of an electric cooker.

Conventional current flows from thepositive terminal of the power source to the negative terminal.

In wires charge is carried by negatively charged electrons. How have wiring colours changed in the UK? The neutral black has been replaced by blue. The line red and has been replaced by brown. The earth is still identified by green and yellow.

The voltage between the phase to earth would be . What are the differences between live, earth and neutral wire ? Appliances with higher power ratings need flexes with larger diameter wires in them. An explanation of the basics of domestic mains electricity suitable for GCSE. These standards apply in the UK and also Irelan Malaysia, Hong Kong, Malta, S. Rings are almost always used in wiring power outlets, and sometime in lighting as well. This growing international standard was adopted for its distinctive appearance, to reduce the likelihood of dangerous confusion of safety earthing (grounding) wires with other electrical functions, especially by persons affected by red-green colour blindness.

In the UK, phases could be identified as being live by using . This should grip the cable itself, and not the individual wires inside it. One wire is called the live wire , as illustrated in Figure 28. The potential difference between these two wires is about 1V. This voltage alternates in time, with the neutral wire connected to ground and the potential of the live wire oscillating relative to ground. Hot and neutral supply power to an appliance, so why the need for a ground wire ? The cable from the appliance usually consist of three wires , an earth and two live wires (line and neutral ) which carry the current (people often think that only the line wire is called live, but both neutral and line are live wires ). The sheath is made of plastic and is . So there are three wires : live (or hot), neutral , and ground , though the ground usually is something like the conduit rather than an actual wire.

The obvious question is why not just have live and ground ? Sometimes this is the case, like in cars.