電気220VAC給電のアースについて
Thread Content
220VAC電源にはL、Nに加えて接地線が1本ありますが、この接地線は保護接地なのでしょうか、それとも電圧のゼロ点の接地なのでしょうか？
保護接地は、黄緑色の線とする
保護接地 ノードのメイン線は、入線電源の中性線の重複接地部から取る
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