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degrub

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Everything posted by degrub

  1. Had 3 strikes within 1-2 years about a decade ago, all within 100 ft of the house. Took out two trees and a transformer + neighbor’s electronics. Convinced me to add MOVs at the main breaker panel in addition to all of the UPSs and surge protected plug bars. The upper Texas Gulf coast is second only to Florida in likelihood of getting hit. Benjamin Franklin was one of the earliest to figure out a way the reduce the chance of church steeples getting a strike that would destroy them by installing air-terminals directly connected to earth thus providing a mimimim resistance path to earth and diverting the 30-100,000 amps of current around the building. They are not 100% effective. here is a link to a basic explanation https://stormhighway.com/protection.php
  2. I would vote for the Shera board for insulating as well. Non-combustible, which can be important around batteries and wiring. EVA foams melt at moderate temperatures (130 - 200 C) and are combustible if exposed to flame. Polycarbonate sheet should be better than acrylic due to its scratch resistance, higher melt point, and impact resistance,
  3. Commercial solar farms would use motorized tracking as there would be payback versus the maintenance and extra capital required. For a home user, it should be simpler , less costly, and less maintenance to add panels on fixed mounts as is commonly done to capture the additional peak time.
  4. That’s what all the green/yellow wire bonding jumpers are meant to address - when you have to isolate with nonconductive components for mechanical reasons.
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