在现代化办公大厦、宾馆酒店、居民住宅、厂矿企业中 ,电气线路星罗棋布 ,而包裹电线的绝缘层有两种。一种是橡胶绝缘导线 ;另一种是塑料绝缘导线。殊不知 ,橡胶绝缘导线结芯最高允许温度为 65度 ,而塑料绝缘导线线芯最高允许温度可达 70度。因此一般情况下 ,大都采用塑料绝缘 In the modern office buildings, hotels, residential buildings, factories and mines, electrical wiring, and wrapped wire insulation there are two. One is a rubber insulated wire; the other is a plastic insulated wire. As everyone knows, rubber insulated wire knot maximum allowable temperature of 65 degrees, while the plastic insulated wire core maximum allowable temperature up to 70 degrees. Therefore, under normal circumstances, the majority of plastic insulation