Transformer

Electrical energy consists of two key elements: current and voltage.

• Current is the rate of flow of electrical energy, measured in amps
• Voltage is the force of that electrical energy, measured in volts

Think of electricity as water flowing through a pipe.

• Current is the rate of water flow
• Voltage is the water pressure

To move water from the city reservoir to homes, businesses, and factories, you need a big pipe and a lot of water pressure. City water lines are built to handle huge volumes of water and that water moves quickly because of powerful water pressure.

Now imagine hooking up a high-volume, high-pressure city water pipe directly to your kitchen sink. The faucet would burst as soon as you turn it on and you’d have a river gushing into your house. To be usable, the water pressure from the main water line must be reduced using pressure regulators.

Once the water pressure has been reduced, it can finally be used for showers, cleaning dishes, watering your garden, and any other household and business chores.