{
  "schemaVersion": "1.0",
  "id": "https://elect-learn.org/zh/lesson/07-breakers-gfci-afci-panel/",
  "url": "https://elect-learn.org/zh/lesson/07-breakers-gfci-afci-panel/",
  "markdownUrl": "https://elect-learn.org/zh/lesson/07-breakers-gfci-afci-panel/index.md",
  "jsonUrl": "https://elect-learn.org/zh/lesson/07-breakers-gfci-afci-panel/index.json",
  "language": "zh",
  "title": "断路器、GFCI、AFCI 和配电箱",
  "description": "认识常见保护装置保护什么、不保护什么，以及跳闸背后的线索。",
  "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": "section-1",
      "heading": "课程信息",
      "paragraphs": [
        "住宅常见器件 · 进阶 · 24 min",
        "保护装置",
        "交互演示"
      ]
    },
    {
      "id": "section-2",
      "heading": "先分清保护对象，才看得懂“跳闸”。",
      "paragraphs": [
        "过流保护关注电流是否过大；剩余电流保护关注流出与流回是否平衡。"
      ],
      "items": [
        "MCB：过载、短路等过电流保护。",
        "RCD/GFCI：检测剩余电流；各地区类型不同。",
        "AFCI/AFDD：电弧故障保护，不等同于前两者。"
      ]
    },
    {
      "id": "section-3",
      "heading": "学习目标",
      "items": [
        "区分过流、漏电和电弧故障保护。",
        "理解为什么不能随意更换更大断路器。",
        "知道配电箱内哪些区域需要持证人员处理。"
      ]
    },
    {
      "id": "section-4",
      "heading": "GFCI 一复位就跳",
      "paragraphs": [
        "浴室 GFCI 插座按 RESET 后立刻跳开，下游插座也没电。",
        "错误判断: 认为 GFCI 坏了，直接换普通插座。",
        "停手边界: 潮湿区域和反复跳闸都不是绕过保护的理由。",
        "推理路径: 拔掉负载，检查潮湿和下游设备；确认 LINE/LOAD、漏电或设备故障。",
        "复习: 常考：GFCI 位置、功能、测试复位、AFCI 与断路器额定值。"
      ]
    },
    {
      "id": "section-5",
      "heading": "完整知识点",
      "items": [
        "断路器响应过载和短路，保护导线。",
        "GFCI 响应火线和中性线电流不平衡。",
        "AFCI 关注可能引发火灾的电弧特征。"
      ]
    },
    {
      "id": "tool-multimeter",
      "heading": "数字万用表",
      "paragraphs": [
        "测量电压、连续性和电阻，用来验证现象而不是猜测。",
        "误用与边界: 把表笔插错孔或量程选错，可能烧表或造成危险。"
      ]
    },
    {
      "id": "tool-breaker",
      "heading": "断路器",
      "paragraphs": [
        "在过载或短路时切断回路，保护导线。",
        "误用与边界: 不能用更大安培数断路器掩盖跳闸问题。"
      ]
    },
    {
      "id": "tool-gfci",
      "heading": "GFCI 插座",
      "paragraphs": [
        "检测漏电流差异并快速切断，常见于潮湿区域。",
        "误用与边界: LINE/LOAD 接反会让下游保护或复位行为异常。"
      ]
    },
    {
      "id": "section-9",
      "heading": "常见误区",
      "items": [
        "用更大断路器解决跳闸。",
        "把 GFCI 跳闸当作烦人的误动作。",
        "打开配电箱后触碰不熟悉的带电区域。"
      ]
    },
    {
      "id": "section-10",
      "heading": "安全流程",
      "items": [
        "记录跳闸发生时的负载和环境。",
        "先移除可插拔负载，再测试复位。",
        "反复跳闸、焦味或配电箱内部问题交给持证人员。"
      ],
      "ordered": true
    },
    {
      "id": "quiz-1",
      "heading": "断路器反复跳闸，可以换更大安培数吗？",
      "paragraphs": [
        "不可以。断路器必须匹配导线和设备额定值，跳闸要找原因。"
      ]
    },
    {
      "id": "quiz-2",
      "heading": "GFCI 主要检测什么？",
      "paragraphs": [
        "火线与中性线之间的电流差异。"
      ]
    },
    {
      "id": "section-13",
      "heading": "回头看",
      "links": [
        {
          "title": "复习第 1 课：断路器保护导线，不替代全部人身保护。",
          "url": "https://elect-learn.org/zh/lesson/01-why-electricity-is-dangerous/"
        },
        {
          "title": "复习第 5 课：GFCI 检测火线和中性线电流差。",
          "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/"
  }
}