- Lightning Strike - 1 Update
| Jeff Liebermann <jeffl@cruzio.com>: Oct 24 10:36AM -0700 On Sun, 24 Oct 2021 08:50:53 -0700 (PDT), "Peter W." >One more thing: Every single string-filament LED in the house got fried - those that were in the chandeliers, not the spares, that is. As we found out yesterday when the kids and grands were over for dinner. No small thing, as there are 26 in the dining room, 16 in the center-hall, and 12 in the library. >They look like this - in various wattages: https://m.media-amazon.com/images/I/7175z+CxhXL._AC_SL1420_.jpg >How, I do not know, unless the strike came down the neutral as well as the cable - not impossible. They were all turned off, of course. Induction perhaps? Those LED "filaments" form a 1 turn loop of 60 LED's in series. A lightning strike nearby could create enough of a field to blow out the bulbs. In a 60 LED series string (E12), only one LED needs to open in order to kill the bulb. The chandeliers have all the bulbs in parallel, so they all get the same overvoltage spike. The loop is typically completed by a light dimmer with MOV overvoltage protection, but I suspect it isn't necessary if the house wiring to the chandelier is long enough. Just a guess because we don't get much lightning on the left coast so I have little experience with lightning. -- Jeff Liebermann jeffl@cruzio.com PO Box 272 http://www.LearnByDestroying.com Ben Lomond CA 95005-0272 Skype: JeffLiebermann AE6KS 831-336-2558 |
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