{
  "schemaVersion": "1.0",
  "id": "https://elect-learn.org/zh/lesson/08-receptacles-switches-lights/",
  "url": "https://elect-learn.org/zh/lesson/08-receptacles-switches-lights/",
  "markdownUrl": "https://elect-learn.org/zh/lesson/08-receptacles-switches-lights/index.md",
  "jsonUrl": "https://elect-learn.org/zh/lesson/08-receptacles-switches-lights/index.json",
  "language": "zh",
  "title": "插座、开关、灯具接线逻辑",
  "description": "不背死图，而是理解电源进来、负载出去、开关控制哪一段。",
  "kind": "lesson",
  "safetyNotice": "学习参考：不同国家/地区的电气规范、许可和验收主体差异很大，本课程不替代当地法规、持证培训、现场许可或主管部门要求。任何实操前都应断电、验电，并遵守当地 AHJ/监管机构和雇主流程。",
  "sections": [
    {
      "id": "component-to-symbol",
      "heading": "把器件名称与图纸符号对应起来",
      "paragraphs": [
        "器件图帮助识别外观，原理图帮助理解功能连接。通过独立符号表练习沿回路读图。"
      ],
      "links": [
        {
          "title": "电气符号图解与读图练习",
          "url": "https://elect-learn.org/zh/guides/electrical-drawing-symbols/"
        }
      ]
    },
    {
      "id": "section-1",
      "heading": "课程信息",
      "paragraphs": [
        "住宅常见器件 · 进阶 · 26 min",
        "接线逻辑"
      ]
    },
    {
      "id": "section-2",
      "heading": "控制负载，不等于隔离所有带电部分。",
      "paragraphs": [
        "电源提供电压。开关闭合，形成完整回路，负载才有电流。"
      ],
      "items": [
        "电源、开关、负载组成工作回路。",
        "开关改变通断，灯的状态随之改变。",
        "灯灭不能证明灯具各处都无电。"
      ]
    },
    {
      "id": "section-3",
      "heading": "学习目标",
      "items": [
        "理解插座、开关和灯具的典型功能端子。",
        "识别开关腿和持续带电导线。",
        "知道拆线前为什么要拍照、标记和验证。"
      ]
    },
    {
      "id": "section-4",
      "heading": "开关关了灯头仍有电",
      "paragraphs": [
        "更换灯具时，墙上开关关了，但灯盒内某根线仍检测到电压。",
        "错误判断: 以为开关关了就可以直接拆灯。",
        "停手边界: 灯具盒内可能有持续电源或多回路，必须断路器断电并验电。",
        "推理路径: 拍照标记，识别电源、开关腿、中性线和地线；不确定的多线盒交给持证人员。",
        "复习: 常考：开关控制火线、设备接地、端子颜色和导线标识。"
      ]
    },
    {
      "id": "section-5",
      "heading": "完整知识点",
      "items": [
        "开关通常控制火线侧，让负载在关闭时不再获得电源。",
        "白线不一定永远是中性线，旧式开关腿可能重新标识。",
        "插座黄铜端常接火线，银色端常接中性线，绿色端接地。"
      ]
    },
    {
      "id": "tool-driver",
      "heading": "绝缘螺丝刀",
      "paragraphs": [
        "用于端子螺丝和面板螺丝，绝缘层提供额外保护。",
        "误用与边界: 绝缘工具不是带电作业许可证，破损后不能继续依赖。"
      ]
    },
    {
      "id": "tool-stripper",
      "heading": "剥线钳",
      "paragraphs": [
        "按线规剥除绝缘层，保护铜芯不被割伤。",
        "误用与边界: 剥伤铜芯会降低机械强度并增加发热风险。"
      ]
    },
    {
      "id": "tool-pliers",
      "heading": "尖嘴钳",
      "paragraphs": [
        "弯线、夹持小零件、整理线盒内导线。",
        "误用与边界: 不要用普通钳子剪带电导线或当作绝缘工具。"
      ]
    },
    {
      "id": "tool-wire-nut",
      "heading": "压线帽",
      "paragraphs": [
        "把合适数量和规格的导线机械连接并绝缘。",
        "误用与边界: 规格不匹配、铜线未齐或未拉拽检查，都会造成松动。"
      ]
    },
    {
      "id": "tool-cable",
      "heading": "NM 线缆/导线",
      "paragraphs": [
        "承载回路电流，颜色和标识帮助识别用途。",
        "误用与边界: 线规、护套、环境或颜色使用错误都可能违反规范。"
      ]
    },
    {
      "id": "tool-box",
      "heading": "接线盒",
      "paragraphs": [
        "容纳接线、固定器件并保护连接点。",
        "误用与边界: 盒内过满、无盖或连接点裸露都是常见隐患。"
      ]
    },
    {
      "id": "section-12",
      "heading": "常见误区",
      "items": [
        "拆线前不拍照不标记。",
        "把所有白线都当中性线。",
        "把背插松动问题误判为设备故障。"
      ]
    },
    {
      "id": "section-13",
      "heading": "安全流程",
      "items": [
        "断电、验电、拍照、标记。",
        "识别电源进线、负载出线、开关腿和接地。",
        "按设备说明和当地规范端接；完成后由合格人员检查。"
      ],
      "ordered": true
    },
    {
      "id": "quiz-1",
      "heading": "灯开关关了，灯盒内一定无电吗？",
      "paragraphs": [
        "不是。盒内可能有持续电源或其他回路，必须断路器断电并验电。"
      ]
    },
    {
      "id": "quiz-2",
      "heading": "拆线前最应该留下什么记录？",
      "paragraphs": [
        "清晰照片、标签和每根线所在端子/连接关系。"
      ]
    },
    {
      "id": "section-16",
      "heading": "回头看",
      "links": [
        {
          "title": "复习第 2 课：断电验电流程。",
          "url": "https://elect-learn.org/zh/lesson/02-deenergize-test-lockout/"
        },
        {
          "title": "复习第 5 课：火线、零线、地线角色。",
          "url": "https://elect-learn.org/zh/lesson/05-hot-neutral-ground/"
        }
      ]
    }
  ],
  "dateModified": "2026-10-23",
  "publisher": {
    "name": "Elect Learn",
    "url": "https://elect-learn.org"
  },
  "review": {
    "status": "not-independently-reviewed",
    "statement": "尚无独立专业审校记录。参考来源不代表来源机构审校或认可本站。",
    "policyUrl": "https://elect-learn.org/zh/methodology/"
  }
}