PHPWIND
HELLOCQ
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图片:10d2v%20short.jpg
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估计没匹配好,3.5kw电流也不超过10a,这么粗的馈线,流10a的电流,是不会发热的。
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10a是如何计算出来的?
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i=p/r再开平方3500/50=70,再开平方=8.366a<10a
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功因数没有考虑