![]() The mark allows an electrical inspector to immediately know you have used a proper rod.Ĭonnect the grounding electrode conductor to the ground bus. ![]() A listed ground rod will have a marking near the top of it that states that it is approved.If they are not listed, they need to be at least 5⁄ 8 inch (1.6 cm) wide. If they are listed, they need to be at least 1⁄ 2 inch (1.3 cm) wide and they will have a mark that says they are listed. In the US, ground rods need to be at least 8 feet (2.4 m) long.X Expert Source Ricardo MitchellĮlectrician & Construction Professional, CN Coterie Expert Interview. ![]()
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