导线截面积与载流量的计算 本节口诀对各种绝缘线(橡皮和塑料绝缘线)的载流量(安全电流)不是直接指出，而是“截面乘上一定的倍数”来表示，通过心算而得-Wire cross-sectional area and carrying capacity calculation formulas in this section a variety of insulated wire (rubber and plastic insulated wire) of the carrying capacity