怎么样用万用表测地线是否有效? 如何用万用表判断地线是否已正确接地？
\u600e\u4e48\u6837\u7528\u4e07\u7528\u8868\u6d4b\u5730\u7ebf\u662f\u5426\u6709\u6548?\u6ca1\u6709\u4e07\u7528\u8868\uff0c\u600e\u4e48\u68c0\u6d4b\u5730\u7ebf\u662f\u5426\u6709\u6548\uff1f\u5176\u5b9e\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u4e00\u70b9\u5c31\u900f
\u7528\u4e07\u7528\u8868\u662f\u4e0d\u80fd\u5224\u65ad\u5730\u7ebf\u662f\u5426\u6b63\u786e\u63a5\u5730\u7684\u3002
\u9700\u8981\u4f7f\u7528\u4e13\u95e8\u7684\u63a5\u5730\u7535\u963b\u6d4b\u91cf\u4eea\u8868\uff0c\u53ea\u8981\u5728\u706b\u7ebf\u4e0e\u5730\u7ebf\u4e4b\u95f4\u63a5\u5165\u4e00\u4e2a200W\u4ee5\u4e0a\u7684\u8d1f\u8f7d\uff0c\u8fd9\u65f6\u6d4b\u91cf\u8d1f\u8f7d\u4e0a\u7684\u5b9e\u9645\u7535\u538b\uff0c\u5982\u679c\u7535\u538b\u80fd\u8fbe\u5230200V\u4ee5\u4e0a\uff0c\u5c31\u8bf4\u660e\u63a5\u5730\u7ebf\u5df2\u7ecf\u63a5\u5730\u3002\u8fd9\u4e2a\u7535\u538b\u8d8a\u9ad8\uff0c\u63a5\u7ebf\u6548\u679c\u8d8a\u597d\u3002
\u7535\u538b\u662f\u4e24\u70b9\u95f4\u7535\u4f4d\u5dee\uff0c\u6709\u4e86\u7535\u538b\uff0c\u7535\u8377\u5c31\u4f1a\u5728\u7535\u7ebf\u4e2d\u6d41\u52a8\u5f62\u6210\u7535\u6d41\u3002\u8fd9\u5c31\u50cf\u6c34\u4ece\u9ad8\u5904\u5411\u4f4e\u5904\u6d41\u52a8\u7684\u9053\u7406\u662f\u4e00\u6837\u7684\u3002\u6c34\u5728\u6d41\u52a8\u7684\u8fc7\u7a0b\u4e2d\u4f1a\u505a\u529f\uff0c\u7535\u5728\u6d41\u52a8\u8fc7\u7a0b\u4e2d\u4e5f\u4f1a\u505a\u529f \u3002\u706b\u7ebf\u548c\u96f6\u7ebf\u4e4b\u95f4\u6709\u7535\u538b\u5dee\uff0c\u6211\u56fd\u5355\u76f8\u7535\u6807\u51c6\u7535\u538b\u662f220V\u3002
\u7535\u6d41\u901a\u8fc7\u7ebf\u5f84\u7ec6\u3001\u7535\u963b\u5927\u7684\u5bfc\u7ebf\u65f6\uff0c\u4f1a\u53d1\u751f\u7c7b\u4f3c\u585e\u8f66\u7684\u60c5\u51b5\uff0c\u5bfc\u81f4\u53d1\u70ed\u3002\u7535\u706f\u7684\u94a8\u4e1d\u80fd\u627f\u53d7\u9ad8\u6e29\uff0c\u94a8\u4e1d\u5728\u9ad8\u70ed\u60c5\u51b5\u4e0b\u5c31\u53d1\u5149\u4e86\u3002
\u6269\u5c55\u8d44\u6599
\u63a5\u5730\u5de5\u4f5c\u539f\u7406
1\u3001\u5730\u7535\u4f4d\uff0c\u4e0e\u5927\u5730\u7d27\u5bc6\u63a5\u89e6\u5e76\u5f62\u6210\u7535\u6c14\u63a5\u89e6\u7684\u4e00\u4e2a\u6216\u4e00\u7ec4\u5bfc\u7535\u4f53\u79f0\u4e3a\u63a5\u5730\u6781\uff0c\u901a\u5e38\u91c7\u7528\u5706\u94a2\u6216\u89d2\u94a2\uff0c\u4e5f\u53ef\u91c7\u7528\u94dc\u68d2\u6216\u94dc\u677f\u3002
2\u3001\u7535\u6c14\u5730\uff0c\u5927\u5730\u662f\u4e00\u4e2a\u7535\u963b\u975e\u5e38\u4f4e\u3001\u7535\u5bb9\u91cf\u975e\u5e38\u5927\u7684\u7269\u4f53\uff0c\u62e5\u6709\u5438\u6536\u65e0\u9650\u7535\u8377\u7684\u80fd\u529b\uff0c\u800c\u4e14\u5728\u5438\u6536\u5927\u91cf\u7535\u8377\u540e\u4ecd\u80fd\u4fdd\u6301\u7535\u4f4d\u4e0d\u53d8\uff0c\u56e0\u6b64\u4f5c\u4e3a\u7535\u6c14\u7cfb\u7edf\u4e2d\u7684\u53c2\u8003\u7535\u4f4d\u4f53\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1\u2014\u63a5\u5730
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1\u2014\u4e07\u7528\u8868
插座的地线应接在漏电保护器进线的零线上，不能把地线理解为简单的与大地连接
万用表不能测，只能用接地电阻测试仪
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