发布时间:2025-02-01 03:06:56
导线截面积s=I/a。I表示电流安,a表示每平方安全承载电流安。铜线a取每平方8安,铝线4安。比如100安的电流,铜线s=100÷8=12.5平方,铝线s=100÷4=25平方。
装修民宿想在吊顶上装点木条但是消防那边说吊顶不可以用易燃材料所以想说有什么可以替代木头过消防
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