Welcome to the module on Electricity in the Home.

At the end of this module you should:
1. Understand how a ring circuit works. 
2. Understand the difference between direct and alternating current. 
3. Know that the voltage of the mains supply is 230 volts a.c. 
4. Know the unit of electrical energy used by electricity supply companies. 
5. Be able to calculate the cost of using common electrical appliances. 
6. Know how to wire a plug correctly. 
7. Understand the safety role of a fuse in domestic electrical circuits. 
8. Understand the safety role of circuit breakers in domestic electrical circuits.