郭老师，知道电机功率如何计算电缆线径、接触器、热过载、空气开关
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http://hi.baidu.com/%D0%D0%BF%D5%CC%EC/blog/item/fc03fc544c3a60cdb745ae06.html
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1.1kw\u7684\u7535\u673a\u9009\u62e91\u2014\u20142.5\u5e73\u65b9\u7684\u5355\u80a1\u94dc\u5bfc\u7ebf\uff0c\u65ad\u8def\u5668\u7528\u6765\u4f5c\u77ed\u8def\u4fdd\u62a4\u548c\u77ed\u671f\u8fc7\u8f7d\u7684\uff0c\u5982\u679c\u662f\u7a7a\u5f00\u7684\u8bdd\uff0c\u9009\u62e9\u7535\u673a\u989d\u5b9a\u7535\u6d41\u76841.5\u2014\u20142\u500d\uff0c\u5982\u679c\u662f\u5c0f\u578b\u65ad\u8def\u5668\u7684\u8bdd\uff0c\u81f3\u5c112\u500d\u7684\u7535\u673a\u7684\u989d\u5b9a\u7535\u6d41\u6570\u503c\uff0c\u8b6c\u59825\u5b89\u57f9\u7684\u7535\u673a\uff0c\u53ef\u4ee5\u9009\u62e910\u5b89\u57f9\u7684\u65ad\u8def\u5668\uff1b\u63a5\u89e6\u5668\u4e3b\u8981\u662f\u7528\u6765\u5931\u538b\u4fdd\u62a4\u7684\uff0c\u6240\u4ee5\u6700\u597d\u89812\u500d\u4ee5\u4e0a\u7684\u7535\u6d41\u4e86\uff1b\u7194\u65ad\u5668\u7528\u6765\u4f5c\u8fc7\u6d41\u4fdd\u62a4\uff0c\u90a3\u5c31\u8981\u770b\u4f60\u7684\u7535\u673a\u662f\u7528\u6765\u9891\u7e41\u542f\u52a8\u7684\u8fd8\u662f\u7528\u6765\u957f\u671f\u6ee1\u8d1f\u8377\u8fd0\u884c\u7684\u4e86\uff0c\u5177\u4f53\u7684\u8981\u7531\u4f60\u81ea\u5df1\u62ff\u94b3\u5f62\u7535\u6d41\u8868\u6765\u6d4b\u6ee1\u8d1f\u8377\u7535\u6d41\u4e86\uff0c\u7136\u540e\u53ef\u4ee5\u4e58\u4ee51.2\u3002
3kw\u7684\u9009\u62e92.5\u5e73\u65b9\uff0c\u5176\u4f59\u540c\u4e0a\u3002
每平方1一个千瓦乘以1.5安全系数 电流为每千瓦2安培所以接触器为40A
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