If we were to look at my YouTube viewing history from last night, what would we see?
A curious number of videos devoted to topics of concern to so-called linesmen, the men and women who have to work in high places sometimes, safely out of reach to most people, with dangerously high voltage equipment, such as transformers and so on.
The first topic I got into was ferroresonance. Your transformers may overheat if your capacitive inductance from the underground feeder cables cancels the magnetic field induced resistance in your delta wired bank. Magnetic inductance is a key feature of transformers that we don't want to inadvertently undermine with a compensatory resonance.
The second topic, related to the first, was leaving an open corner when doing a three transformer delta wiring, and measuring the voltage across this corner before closing it. If the circuit is correctly wired, the voltage will be pretty low, not some household number like 120 or 240, or even higher depending on the complication.
Why am I concerning myself with these topics? Because I'm a "grid nut" -- someone interested in electrical grids rather generally. I admire those brave linesmen who are sometimes tasked with maintaining or constructing high tension lines at high altitude. If you're looking for ways to be brave, there's no shortage of scary jobs. Don't feel you need to become a soldier, if bravery-testing is your deal.
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