Question

Usually, three insulated wires of different colours are used in an electrical appliance. Identify the three colours.

Answer 1

Answer:

• Generally three insulated wires of different colours are used in electrical appliances, and these three colours are Red, Black and Green.

Explanation:

• In electrical appliances, especially in household wiring these three colours are used mainly to identify each wires and the state of its connection.

• Red wire is the live wire, it is the phase of the electrical circuit which remains separate from other red or black wires.

• Black wire is the neutral wire because it does not carry any charge, and is connected to the neutral bar inside of the electric circuit. It can be connected to other black wires since they both have no electrical charge on it.

• The third is the Green wire, which is used for earthing or grounding in a electric circuit. They are generally used for larger electrical appliances like Television, refrigerators, etc which have 3 sockets. It is because they have larger risk of short circuiting.

• In general wiring systems for lights or fans, etc only live and neutral wires, that is red and black are used.