2025/12/9 3:05:40zhun
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
评论信息一个电工常用的“经验公式”：只要是铜芯电线，每平方毫米的截面积可以安全通过4--5A的额定电流；在220V单相电路中，每1KW的功率，其电流约为4.5A左右；在380V三相平衡电路中，每1KW的功率，其电流约为2A左右。上面的这些值，可用物理计算公式算下来的结果是很接近的，所…
2025/12/9 2:31:24ju
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
2025/12/9 2:30:02shou
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2025/12/9 2:17:50nang
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2025/12/9 2:11:00qiao
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2025/12/9 1:47:33deng
https://infogram.com/36abccaa-b378-4529-8022-70667c89c36f
2025/12/9 1:03:35suo
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2025/12/9 0:55:09xian
https://infogram.com/df3be33b-ac4a-45b1-bea1-7fa038a6c40d
2025/12/9 0:28:55zhi
https://infogram.com/--1hnp27eq1yr8n4g
2025/12/9 0:27:25yu
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2025/12/9 0:02:51ji
https://infogram.com/533ba506-acbc-4bb6-a55d-a82688533e84
2025/12/8 23:49:51https://infogram.com
https://infogram.com/--1h1749wq7zj1l2z
2025/12/8 23:44:34https://infogram.com
https://infogram.com/--1hnq41opl8w8k23
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