Electricity enters our homes, schools, factories, warehouses through copper cables from powerful generators in power plants.
These plants burn coal or oil, or use nuclear reactors or the power of waterfalls to produce the energy needed to run the generators.
Powerful loads of current come from these generators and are reduced by transformers before they reach our homes and factories.
The electrical current produced is a continuous flow of small particles called electrons. This flow of electrons can be activated or deactivated by means of switches. When you turn on an electric light switch, a television, or any other appliance, the electric current is given a message to start flowing. When the switch is lowered, the current flow stops.
Sometimes that current flow stops without touching the switch. This occurs when wires or circuits overload when there is too much electricity, and a device or fuse in the house automatically breaks the circuit to prevent damage to the wires or even a fire in your home.
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