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The Water Cooler
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An Electrical Warning
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<blockquote data-quote="dennishoddy" data-source="post: 3908016" data-attributes="member: 5412"><p>I didn't quite understand why a welder with very low voltage and hi amperage was used as an example of home or industrial wiring that can run up to 480 volts, and sometimes much higher. </p><p>To eliminate a long post with the additional mathematics to illustrate how resistance in an electrical circuit can cause a tremendous amount of heat, I'll just post this here. </p><p>[URL unfurl="true"]https://www.ecmweb.com/maintenance-repair-operations/article/20890352/the-basics-of-electrical-overheating[/URL]</p><p>As an additional sidebar, the guy in the video twisting the wires before applying the wire nut is not in accordance with directions the manufacturers of those wire nuts recommend. </p><p>I've been to a training seminar by Ideal and SquareD on that subject. </p><p>The main issue is that people use the wrong wire nut for the conductors they are attempting to join. If using the proper wire nut, the nut itself will perform the twisting and do it properly. </p><p>I was always concerned when I saw people putting electrical tape on a wire nutted connection because it "didn't seem secure" to them. If it didn't seem secure, they probably used the wrong nut for the wire they were using.</p></blockquote><p></p>
[QUOTE="dennishoddy, post: 3908016, member: 5412"] I didn't quite understand why a welder with very low voltage and hi amperage was used as an example of home or industrial wiring that can run up to 480 volts, and sometimes much higher. To eliminate a long post with the additional mathematics to illustrate how resistance in an electrical circuit can cause a tremendous amount of heat, I'll just post this here. [URL unfurl="true"]https://www.ecmweb.com/maintenance-repair-operations/article/20890352/the-basics-of-electrical-overheating[/URL] As an additional sidebar, the guy in the video twisting the wires before applying the wire nut is not in accordance with directions the manufacturers of those wire nuts recommend. I've been to a training seminar by Ideal and SquareD on that subject. The main issue is that people use the wrong wire nut for the conductors they are attempting to join. If using the proper wire nut, the nut itself will perform the twisting and do it properly. I was always concerned when I saw people putting electrical tape on a wire nutted connection because it "didn't seem secure" to them. If it didn't seem secure, they probably used the wrong nut for the wire they were using. [/QUOTE]
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