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voltage

The Roots of our AC Power Grid

By Energy Rant No Comments
A while back, a reader asked, “why don’t we switch to at least localized direct current power grids?” The simple answer is it would cost a fortune for both the utility and the consumer to change all distribution and consuming loads to take DC power. As I researched power factor, I recalled why we have an alternating current power grid in the first place. This is interesting and worth knowing, Rant Pack. With that, I apologize for making you wait another week to understand why power factor matters to energy efficiency, directly. A Short Story You know I can’t resist…
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Power Factor Cures for Toenail Fungus

By Energy Rant One Comment
This post ends with a quiz and more than 49 $5 Starbucks card winners for correct answers. Why the quiz for this post? Because the subject is power factor. Most descriptions of power factor remind me of riding the NYC subway many years ago before passengers buried their faces in their smartphones, which did not yet exist. Instead, choices included looking at the floor or the ceiling, like riding an elevator. God knows you don’t want to make eye contact with the person sitting across from you. At the ceiling were ads for the most socially undesirable products imaginable: cures…
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A Frivolous Novelty

By Energy Efficiency, Energy Rant, Government, Renewable Energy, Stimulus, Sustainability 9 Comments
For this week’s publication, I was trying to think of an expensive, short-lived, duplicative, inconvenient, limited use, frivolous novelty.  Did I mention expensive?  After a half-hour of wonderment, the best I could do is a Homer Simpson bottle opener.   But really the Homer Simpson bottle opener will last longer and at least be useful (note, I didn’t say serve it’s purpose, which is to make people laugh) probably for a far longer period than the electric car. Twenty years ago “they” were talking about developing electric cars, I guess to save us from carbon dioxide, but I don’t recall the…
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Hannibal, Max and Me

By Energy Efficiency, Energy Rant, Retrocommissioning (RCx) No Comments
I hate electricity.  I love what it allows me to do but I just don’t understand it.  I sat through an in-house safety training session on arc flash, which I actually understood – there is a huge burst of energy through a “fault” that melts and actually vaporizes the copper conductor, which expands 7,000 times at Mach 2 and 1 million degrees F (made up numbers but the premise is correct).  It’s one heck of an explosion.  During a break I was asking our electrical engineers what the difference between a neutral and ground was, the flow of electrons, the…
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