How To Use A Piece Of White Paper To Prove Whether The Copper-clad Grounding Rod Is Of Poor Quality
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When checking copper clad ground rods, just use one end of copper coated earthing rod and rub a piece of white paper on copper plated ground rod. If there is black matter on the white paper, it means that there are more impurities in copperbond earth rod. The color of inferior earth bonding rod is darker and the hardness is greater.
