A switch or a fuse’s function is to connect or break an electric circuit, but they must be properly connected in a home.
In an electrical circuit, the live wire is always connected to a switch or a fuse, ensuring that the socket or appliance is not live when it is switched off.
Even when the switch is open or the fuse blows if the switch or fuse is installed in the neutral wire, the electrical appliance is still connected to the high voltage live wire.
If the user touched the inside of the device, they might receive an electric shock. curriculum-key-fact.
There is no need for an Earth wire for appliances with an insulating plastic body or case, such as hair dryers, phone chargers, and hand whisks.
These appliances are constructed with two layers of insulating material between the electrical components and any touchable exterior components.
Typically, these two layers consist of the insulated cable carrying the live and neutral wires and the insulating plastic case.
A plastic case is fitted with a metal attachment, like a whisk blade, to prevent it from coming into contact with the electrical components directly.
There are two layers of plastic between the user and the device’s live wire, which is powered by mains voltage.
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(b) The switch is placed on the live wire because when it is turned on, the appliance is connected to a high potential point via the live wire, current flows through the appliance, the circuit is complete, and the neutral wire serves as a path for the current to return. The circuit is broken when the switch is in the off position because no current flows through the live wire to the appliance. It is now safe to perform any necessary appliance repairs.
On the other hand, connecting a switch to the neutral wire is dangerous. Although there is no current flowing through the appliance because the return path is not complete, the appliance is still connected to the high potential terminal through the live wire when the switch is in the off position. However, it is dangerous to perform repairs in this situation because touching the live wire in the appliance could result in the person receiving a fatal electric shock. Additionally, if a live wire accidentally touches the metallic body of an appliance due to a defect, the person who touches the appliance could receive a fatal shock.
Therefore, it can be misleading and even dangerous for the user if the switch is connected to the neutral wire. Switch handling precaution: Avoid touching a switch with wet hands. Is there an error in this question or the answer to the concept of an electric switch?
What does a switch do in a circuit, why is it connected to the live wire, and what safety measures should you take when handling a switch?
On the other hand, if the switch is connected to the neutral wire and turned off, the lightbulb won’t receive any current. However, the device is still wired to the high potential terminal via the live wire.
A switch is a device that controls the flow of current through a circuit or an appliance. To allow the appliance to be connected to the high potential point via the live wire, the switch must always be connected to the live wire. As long as the neutral wire serves as the current’s return path, the circuit is complete in this position. When the appliance does not work i. e. when the switch is in the off position, the circuit is broken and no current reaches the appliance.