# I Thought High Current Always Meant a Fault Until I Came Across Transformer Inrush Current
For a long time, I had a simple rule in my mind: high current means fault . If a transformer suddenly drew 5 times or 10 times its rated current, I wo…
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I Thought Harmonics Were a Grid Problem, Then I Realized They Were Everywhere
Whenever I heard about harmonics, I thought they were only related to large substations, transmission systems, and industrial facilities. I assumed ha…