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What exactly needs to be grounded in a house, and how is it done? That’s what this video explains as it demonstrates how to install a low-resistance panel-to-earth grounding system. Other surge and lightning protection devices are also discussed, and tips on testing systems for functionality and safety are included. A viewable/printable instructor’s guide is available online. Correlates to the National Center for Construction Education and Research standards. A Shopware Production. (16 minutes)

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Voltage and Potential
Buildings have grounding systems for the protection of the people inside. Current flows from higher voltage to lower voltage. When a circuit is shorted out, its current seeks a path to the earth.