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How is where trusted research and expert knowledge come together. This article was co-authored by Jesse Kuhlman. Jesse Kuhlman is a Master Electrician and the Owner of Kuhlman Electrician Services based in Massachusetts. There are 20 references cited in this article, which can be found at the bottom of the page. How marks an article as reader-approved once it receives enough positive feedback. This article has 14 testimonials from our readers, earning it our reader-approved status. This article has been viewed 755,893 times.