Across
- 2. they are built into the walls of a building to provide places to safely plug electrical appliances
- 3. controls the flow of electricity to the building
- 6. they need a source of energy like coal to generate electricity
Down
- 1. this draws the electrical energy needed from the mains supply
- 4. they support overhead cables or power lines to transfer power from power stations to substations
- 5. high voltage electricity is reduced to a lower voltage for the buildings where it will be used
- 6. it goes into a wall socket and connects the electrical appliance to the circuit