低压导线截面选择及供电半径的确定

低压导线截面的选择，有关的文件只规定了最小截面，有的以变压器容量为依据，有的选择几种导线列表说明，在供电半径上则规定不超过O．5km。本文介绍了一种简单公式作为导线选择和供电半径确定的依据，仅供参考。

Low-pressure Conductor Section Selection And Determine Of Power Supply Radius

Electric equipment used in family increased with the development of society and economy. The design direction changed from lighting to multi - function with the high power electric equipment, such as air condition, color tv set with big screen used in the family. This paper states the design from the aspects of electric load prediction, electric source and distribution system, lead and equipment selection, thunder prevention and grounding, fireproof system and automatic de- velopment.