What is the size of mains voltage in Northern Ireland?
12 V
115 V
230 V
What colour is the live wire?
Green and yellow
Brown
Blue
What is the position of the neutral wire in a plug?
Bottom right
Bottom left
Top middle
What is the purpose of the earth wire?
If there is a fault, the earth wire provides a low resistance path to earth
The earth wire is needed to make the appliance work
If the neutral wire fails, the earth wire can take over
What is the purpose of a fuse?
A fuse is designed to stop the wires being pulled out of a plug
A fuse is designed to melt if the earth wire becomes loose
A fuse is designed to melt if the current becomes too high