Earthling is used to defend us from an electric shock. It does this by providing a protective conductor for a default current to flow to the earth. It also contains a circuit breaker or fuse to switch off the electric current to the circuit that has the fault. This course will help you to define the earthling system, define the significance and purpose of earthling in power systems and define terminologies related to earthling. It will also enable you to identify what needs to be earthed and explain the specifications of the earth continuity conductor.