1984年初,我站扩建了几十平方米钢筋水泥结构的办公楼。安装时采用2英寸镀锌水管作楼梯扶手。几年来扶手被摩得又光又亮,从未发生异常现象。1987年“五一”前夕,全站同志大搞卫生时,一位同志突然大叫:“扶手有电!”扶手离室内、外电线不下数米,电是从哪里来的呢?为什么长期没电,而现在突然有电呢? In early 1984, I station expansion of dozens of square meters reinforced concrete structure of the office building. Installation of 2-inch galvanized water for staircase handrails. Over the past few years, the armrest was Molly light and bright, never anomalies. 1987 “51 ” on the eve of the whole station comrades engaged in hygiene, a comrade suddenly shouted: “armrest has electricity! ” Armrest from indoor and outdoor wire less than a few meters, where is the electricity come from Why long-term no electricity, but now there is a sudden electricity it?