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HW <none@no.no>: Jan 01 05:00PM +0100 >isolated auto transformer   I always thought an autotransformer was a transformer with only one winding, and input and output partially share that one winding.   But if that is true, an autotransformer cannot possibly be isolated.

"pfjw@aol.com" <peterwieck33@gmail.com>: Jan 01 08:21AM -0800 http://www.ipernity.com/doc/777361/45315684   Two components in one box. One of several examples.   Peter Wieck Melrose Park, PA

John Robertson <spam@flippers.com>: Dec 31 02:55PM -0800 On 2019/12/31 5:03 a.m., John-Del wrote:   >> True, he only stole from the thieves...which makes him the good guy...(?).   >> John ;-#)#   > In a Robin Hood sort of way I guess. I'm 62 and read the story only once, and that was when I was in second or third grade, so I don't recall the particulars - but my recollection was that Ali Baba was the good guy.   Yeah, he was the good guy in the story.   The Thousand and One Nights is good reading still... Download a copy from Project Gutenberg.   https://www.gutenberg.org/ebooks/34206   John :-#)#

etpm@whidbey.com: Dec 31 09:20AM -0800 On Tue, 31 Dec 2019 09:43:42 +1100, Trevor Wilson   >**Thank you, but no thanks. Pork is not a meat I like to eat.   >Have you tried a decent, but inexpensive SS amp?   >I'd rather listen to, well, ANYTHING, but Trump. Yeah. I have a decent SS amp. Good speakers on it too. I still like my tube amp. No accounting for taste, eh?

Michael Terrell <terrell.michael.a@gmail.com>: Dec 31 09:05AM -0800 > Thus your property is appreciating in value, afterwards.   The payback only appears to be eight years. There is interest involved in the initial costs. Also the solar panels will raise your property taxes.

"pfjw@aol.com" <peterwieck33@gmail.com>: Dec 31 09:09AM -0800 Do the math, if you can. US $20,000 gets you 6.6 KW of "nameplate", exclusive of land. Make it 7.   7 x 6,000 = 42 KWH per day. 42 X $0.14 = $5.88.   Assume 'perfect' sun every day. Making 365 x 5.88 = $2,146.20 = 9.32 years before payback on a straight-line calculation. Which carefully avoids the concept of Time-Value of Money. On a monthly basis, that comes to $178.85. If you borrow money at 3.5% (unlikely for a solar project with $0 residual value), that would come in at $115.99 per month. Given an actual payback (time-value of money) of 62.86 per month, or 26 years, 7 months. Roughly six (6) years beyond the useful life of the installation.   Had you invested that same $20,000 at that same 3.5% for that same 20 years, on the assumption that you have that much cash lying around, you would have $39,795.78 in 20 years.   NOTE: None of the above counts any sort of maintenance. Such as cutting the grass, scrub or whatever underneath the panels, cleaning the panels - which needs to be done. Snow removal if relevant. Bad days, rain, clouds, nor any other adverse conditions. Equipment servicing - Grid-Tie inverters need regular servicing and certification. And so forth.   One last myth: Appreciation of property - 20,000 watts of panels will take 67 panels at 300 watts per each (optimistic). Each panel is 2 square meters - very roughly 10 square feet. 670 square feet is, again, very roughly 26 feet square. Not one helluva lot of land to appreciate. And an installation that small will hardly generate the material discounts that a Utility-Scale installation will command. But, for you, we are ignoring the hard truths, while looking only at the raw, optimistic numbers.   Solar, without subsidies is a bad deal. Full stop. Solar with subsidies is a bad deal for the taxpayers. Full stop. Solar, with or without subsidies is a bad deal for the Planet. Full stop.   Peter Wieck Melrose Park, PA

"pfjw@aol.com" <peterwieck33@gmail.com>: Dec 31 09:14AM -0800 On Tuesday, December 31, 2019 at 12:05:03 PM UTC-5, Michael Terrell wrote:   > The payback only appears to be eight years. There is interest involved in the initial costs. Also the solar panels will raise your property taxes.   There is that. There is the false assumption of $2,500 in avoided utility bills - possible in some parts of the US with good sun, no snow, and dry-but-dust-free weather. Oh, and the service life of 35 years. Sure. All good.   And, of course, EnergySage wants to sell you solar panels on commission from local installers. Naturally, their figures will be highly optimistic.   Peter Wieck Melrose Park, PA

"pfjw@aol.com" <peterwieck33@gmail.com>: Dec 31 09:16AM -0800 > Solar, with or without subsidies is a bad deal for the Planet. Full stop.   > Peter Wieck > Melrose Park, PA   Correction, 18 square feet per panel, so roughly 35 feet square of land.   Peter Wieck Melrose Park, PA

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