Electrical professionals have long observed the “underloading” of customer-owned transformers, which, in part, is brought about by National Electrical Code (NEC) Chapter 2 design demand rules. This practice can be traced back to more than 50 years ago — when the economy was growing close to 10% compared to the 1% we see today. This was also a time when customers could visit the local electric utility store to get an incandescent light bulb replaced for free. The widely ...

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