5.2 cables and plugs

Question 1

Why is plastic used to enclose electrical conductions such as sockets and plugs?

Answer 1

Plastic is used because it is a good electrical insulator

Question 2

What is a mange cable made up of?

Answer 2

Two or three insulated copper wires surrounded by an outer layer of flexible plastic material

Question 3

What colours are the wires in a three dash plug or three – core cable?

Answer 3

The live wire is brown, the neutral wire is blue, and the Earth wire is striped green and yellow

Question 4

What is the Earth wire?

Answer 4

The wire in a mains cable used to connect the metal case of an appliance to earth (ground)

Question 5

What is a plug?

Answer 5

A plug is an insulated case that connects the cable from an appliance to a socket

Question 6

What is a three pin plug?

Answer 6

It has a life pin, a neutral paint, and an earth pin

Question 7

What is a fuse?

Answer 7

Contains a thin wire that melts and cuts the current off if too much current passes is through