In india the potential difference between live wire and neutral wire is

The mains supply in the UK is an alternating current (ac) voltage at a frequency of 50 hertz (Hz) and a voltage of 230 volts (V). The power input for households is ac as the National Grid can only use ac input. This means that the direction of the current and voltage changes 100 times per second. The direction of a direct current (dc) voltage, such as that produced by a cell or a battery, does not change. In the diagrams below, A shows an ac voltage, and B shows a dc voltage. B Live, neutral and earth mains wires The UK mains supply is connected to appliances in the home by using a plug. The plug contains three wires – the live, neutral and earth wires. In a plug, the live wire (brown) and the neutral wire (blue) are the two wires that form the complete circuit with a household appliance. The earth wire (green and yellow) does not normally form part of the circuit and is included as a safety wire. It is connected to 'earth', which is usually a large metal spike buried under a house. The potential difference values between these wires is different. Wires Voltage between them (V) Live and neutral 230 Live and earth 230 Neutral and earth 0 Safety features in plugs and appliances There are three main safety features that are found in plugs and appliances to ensure that no harm comes to the user. • The fuse – a fuse is designed to melt if a current flows through it that is too large. For example, if a fuse has a rating of 3 A then it will melt if the current flowing through it ...

Live Wire - It is wire in which current flows from electric pole to our home . Its colour is Red. Neutral Wire - It is a wire whichis used to complete domestic circuit. Its colour is Black. Neutral is the wire tied at the low potential end between each phase, enabling the completion of a circuit and maintaining a stable voltage level. Since the neutral wire completes and electrical circuit (in terms of alternating current) it carries the same current as the live or phase wire tracing back to the generator, however, it's potential to earth is nearly 0V. The voltage between the phase to earth would be 220V, so the phase wire would alternate current direction between maximum positive and maximum negative peaks of the AC cycle. As a potential difference is needed neutral wire is equally important. hope it helps