Unverified90% confidenceDecision RuleTime unknown
总开关(进线主开关)单相入户选2P(同时断开火线和零线),三相入户选4P;分支回路照明用1P即可,但带漏电保护的必须用1P+N或2P以监测零线电流
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90%
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Long-term
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Unverified总闸(进线开关)必须用2P(同时切断火线和零线),分支回路可用1P(仅断火线);卫生间、厨房等潮湿回路建议用带漏电保护的2P(DPN或1P+N)81% similarUnverified接线式温控器需确认供电方式:单火线(2线)温控器无零线容易造成灯光频闪或无法带屏,有零线(3线)更稳定,老房子多为单火线,改造前先确认底盒有无零线76% similarUnverified零火线调光器带载能力和稳定性远优于单火,若新装修或墙内有零线,优先选零火方案避免频闪76% similarUnverified1P空开只断火线,2P同时断火线和零线。潮湿环境(卫生间、厨房、热水器)和大功率电器回路建议用2P,维修时可彻底断电更安全75% similarUnverified接线务必区分进出线(上进下出)和火零线位置,漏电断路器零线必须接入其N接线端子而非直接跨接,否则测试跳闸但实际保护失效75% similar
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