发布时间:2025-02-01 03:02:22
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。
去深山自己做个小木屋养条狗养只鸡鸭鹅的种点蔬菜喝着泉水烹着茶享受着大自然的风景
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