3*120+2*50铜芯电缆与3*120铜芯电缆所带负荷及电流怎么算的,求大神们指导
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![3*120+2*50铜芯电缆与3*120铜芯电缆所带负荷及电流怎么算的,求大神们指导](/uploads/image/z/7936823-47-3.jpg?t=3%2A120%2B2%2A50%E9%93%9C%E8%8A%AF%E7%94%B5%E7%BC%86%E4%B8%8E3%2A120%E9%93%9C%E8%8A%AF%E7%94%B5%E7%BC%86%E6%89%80%E5%B8%A6%E8%B4%9F%E8%8D%B7%E5%8F%8A%E7%94%B5%E6%B5%81%E6%80%8E%E4%B9%88%E7%AE%97%E7%9A%84%2C%E6%B1%82%E5%A4%A7%E7%A5%9E%E4%BB%AC%E6%8C%87%E5%AF%BC)
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