https://post.naver.com/viewer/postView.nhn?memberNo=36314878&volumeNo=23104040
<누전차단기가 내려갈 때>
https://blog.naver.com/weekenddoit/222004880031
http://blog.daum.net/kun9960/12975429
<간단한 누전 확인>
http://www.wowtv.co.kr/NewsCenter/News/Read?articleId=A202008070173&t=KO
<침수 시 차단기>
http://health.chosun.com/site/data/html_dir/2020/07/31/2020073102174.html
<누전사고 예방>
https://www.youtube.com/watch?v=-sHiGLNL-6g
https://www.youtube.com/watch?v=zyngVYD4_y8
https://www.youtube.com/watch?v=T4fYHoaI9_4
<메가테스터기 사용법>
https://search.daum.net/search?w=tot&DA=UME&t__nil_searchbox=suggest&sug=&sugo=15&sq=%ED%85%8C%EC%8A%A4%ED%84%B0%EA%B8%B0&o=3&q=%ED%85%8C%EC%8A%A4%ED%84%B0%EA%B8%B0+%EC%A0%80%ED%95%AD%EC%B8%A1%EC%A0%95%EB%B2%95
<메가테스터기 구조>