Author: Noyafa–CCTV Tester
Question: What are the methods for judging whether the cable fault tester is live? Answers: If the cable is not running, but if this cable is parallel with other running cables, there will be an induced current, and the induced current will also have a magnetic field. , Question: What are the methods for judging whether the cable fault tester is powered At this time, the meter will also have instructions, and misjudgment will occur at this time. 2. If the running cable has voltage and no load, there is no current flowing on the cable, and the magnetic field cannot be detected at this time, and it is thought that it is a non-energized cable, which is very prone to misjudgment. 3. If there are multiple cables in the cable trench, these multiple cables will generate a magnetic field. At this time, the entire area will generate a magnetic field generated by the current. At this time, there will be a magnetic field in the entire area, making the judgment impossible.
Misjudgment is easy to occur. The result of misjudgment is very serious, and serious casualties will be caused. Therefore, you must clearly and seriously judge whether the cable of the cable identification instrument will be charged to protect your personal safety.
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