絶縁抵抗測定

昨日、エアコンの絶縁抵抗を計測。

1回目 0ΩでNG。 コンセントからエアコンのプラグを抜くと∞ΩでOK.

再び差し込むと0ΩでNG。 エアコン不良? でもブレーカも落ちないし、何が原因?

全然わからない!!

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