规模较大的港口工程,建成后一般都形成一个新港区(或新作业区),区内道路长达数公里.道路照明设计已成为港口工程设计中不可缺少的一部分.道路照明设计内容较多,涉及面广.我们在设计中,主要计算工作量是对路灯供电电缆的(或导线)截面选择.它的选择应符合电缆允许载流量,满足一定的机械强度要求,并保证光源有给定的电压水平.在满足这些要求的 Large-scale port projects, after the completion of the formation of a new port area (or new job area), the road up to several kilometers in the road. Road lighting design has become an integral part of port engineering. Road lighting design more , Involving a wide range of our design, the main calculation of the workload is on the street lamp power cable (or wire) cross-section selection. Its choice should be consistent with the cable current carrying capacity to meet certain mechanical strength requirements, and to ensure that light is given The voltage level at which these requirements are met