State how transformers can be used to reduce energy loss and in doing so state the uses of step-up and step-down transformers

Transformers can be used to reduce energy loss through the following process; first electricity passes through step-up transformers which increase the potential difference to several hundred thousand volts because less energy is lost in the power cables when the potential difference is very high. Now the electricity passes through high-voltage cables which cannot yet be passed to homes as the potential difference is too high, so finally the electrical passes through step-down transformers which reduce the poetical difference to around 230 Volts, then the electricity is passed to homes