Resistive losses occur in cabling. Equipment w ith a l arge power usage should, therefore, be supplied from a high voltage supply as close as possible, e .g. the corresponding transformer should be as close as possible.
Cables to equipment should be oversized to prevent unnecessary resistance and losses as heat. The power supply can be optimised by using high efficiency equipment such as transformers.
Other high efficiency equipment such as motors, i s covered in Section 3.6, compressors in Section 3.7, and pumps in Section 3.8.
電力線路會造成阻抗損失，所以使用大動力裝備就要越靠近高電壓供應端越好，例如越靠近變壓器端越有利。
電力輸送設備的線路線徑應該設計大一些，以減少不必要的阻抗及發熱損失。電力供應應採用高效率的裝備，如變壓器等。
其他高效率裝備如馬達、壓縮機、泵浦等。
