Voltage is expressed in Volts .

Current in Amperes.

Power in Kilowatts

To understand these terms, you can compare this with a water tap. The power (kW) is then expressed in the flow of water that flows from the tap. To obtain this flow rate you can both increase the water pressure and increase the size of the tap opening. You can achieve the same flow rate with both a small tap and high pressure and a large tap with low pressure. The pressure can be compared to the voltage (Volt). The size of the tap with the current (ampere). After all, the amperage also determines the thickness of the electricity cables.