Recently installed some lights that are sunk in the ground. They had connections for the earthing / ground cable, which I did connect and test to be sure. But I would like to understand why this is required in the first place given that the lamps are literally in the earth. Thanks.
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I would imagine it’s to do with where they are installed. Imagine you had a large flowerbed built from wood or concrete, the lights would not be technically connected to ground per se. Or the entire garden could have been built upon an area that would be electrically separated from the ‘ground’.
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