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でんちゃん@電気工事

ケーブルを検電する時にぐるっと１周させる理由がコレ

Two power cables, one labeled 100V and the other 200V, each with three colored wires inside. A handheld voltage detection tool is shown near each cable, with arrows indicating its movement around the cables. Text in Japanese reads "反応する" (reacts) and "反応しない" (does not react) near the tool, and additional text at the bottom describes the tool circling the cable.

12:05 PM · Sep 16, 2025

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