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Learn how to use the grounding of the energy provider's meter, of course, only if conventional grounding is unfeasible, this unfeasibility does not refer to saving money, much less the hassle of a renovation. I must make it clear that what I will show is only an alternative for a residence that has not been installed with any type of grounding recommended by NBR-5410 and only has the grounding of the concessionaire's meter. Link to my course: https://www.udemy.com/course/instalac...