understand how the use of insulation, double insulation, earthing, fuses and circuit breakers protects the device or user in a range of domestic appliances

Question 1

Earthing -

Answer 1

Object that is earthed has a wire that connects it to the ground

Gives current an easy way to flow away from the object

If a fault occurs, and u touch, current will flow to the earth wire (taking the path of less resistance)

this is instead of u getting an electric shock

Question 2

Circuit Breaker -

Answer 2

A switch that opens if a current that is too large flows through it

Can be quickly reset

Prevents fires and electric shocks

Question 3

Fuse -

Answer 3

Designed to melt when a current that is too large flows through it

Breaks the circuit and helps to prevent fires and short circuit

When choosing a fuse for a circuit use a fuse which is rated just above the current that is normally needed

Question 4

Insulation -

Answer 4

Surrounding wires in materials that don’t conduct electricity.

means u can touch them safely without an electric shock

Question 5

Double Insulation -

Answer 5

Extra layer of insulation