diy solar

diy solar

Search results

  1. R

    Need electrician in Tampa Florida area for DIY solar permit.

    https://www.myfloridalicense.com/wl11.asp?mode=2&search=City&SID=&brd=&typ= License Category: Electrical contractors License Type: Cert. electrical contractor Maybe Reg. electrical contractor city county state Special Qualification: Electrical Contractor Licenses Per Page: Search
  2. R

    Is it the beginning of the end for Solark?

    Meaningless? https://www.zerohedge.com/markets/sp-500s-best-performing-stock-over-past-5-years-not-nvda-or-tsla
  3. R

    Why hybrid solar air conditioners but not the 48vdc ones?

    I believe AC mini-splits use a full wave bridge rectifier to convert AC into ripple DC. Then they try to flatten out the ripple DC using a capacitor. A few years ago I posted about the much-improved power factor, derived by plugging my Midea U-shaped inverter window AC into a square wave...
  4. R

    Is there a proper way to pull one feed directly from grid?

    Plug in 120vac Emergency light? When 120v power fails, the emergency light turns on using an internal battery. (No idea what the question is. I'll live.)
  5. R

    Best material to insulate batteries? Best R-value?

    Aspen Aerogel. Seems to be an Aerogel in name only. R-10 per inch thick. Typically 6mm thick so four layers needed for an inch. Expensive. Different types and temp. ratings. This guy in VA Beach has been selling it for years...
  6. R

    About DIY Solar Heating Systems...

    https://www.builditsolar.com/SiteMap.htm Old thermal solar site. The sun still works the same. Not necessarily for heating a greenhouse, but for heating air, fiberglass bug/window screens seem to work the best. Must insulate the greenhouse. Fiberglass batts held in place with house wrap...
  7. R

    Something limiting my PV production all of a sudden

    Flagish https://www.wunderground.com/wundermap leads to https://www.wunderground.com/dashboard/pws/KAZFLAGS192 Random pick weather station with Solar Radiation (watts/m²) near bottom of page. Not all stations have Solar Radiation (watts/m²). Can look back to any day/wk/mth/yr. In future, 10...
  8. R

    Need lot cleared for solar-- how do I estimate the space?

    Why summer might be better. Northern hemisphere summer sun moves through a maximum of degrees. If living at Lat 69.69, Nov 22, the sun is only up two hours. Having shadows that stay in the same position all day long doesn't tell much of anything. The summer would allow a more exact location...
  9. R

    Need lot cleared for solar-- how do I estimate the space?

    https://www.suncalc.org/#/29.8505,-81.6992,3/2023.11.22/14:47/1/3 Any place, date, time of the year. Box for shadow length in meters. (take on) Can use to measure tree height. Probably best to use in summer. Use along with Google Earth Pro. Right triangle 3x4x5 squaring each number leg leg...
  10. R

    Fans: 12V vs 110V watts per cfm

    https://www.amazon.com/AmazonBasics-Adjustable-Oscillating-Standing-Pedestal/dp/B07BNK6T5Q/ref=sr_1_8?keywords=circulating+fan&qid=1700674604&sr=8-8 16" 115vac to inverter dc. I have a couple years older version.. Older version advertised 24 speeds which was really only 12 speeds. I removed...
  11. R

    Interesting re solar cooling

    Maybe something like that is going on with the Bandera Volcano Ice Cave, also known as Zuni Ice Cave. A video taken this summer showed it frozen, even though it is located in NM.
  12. R

    please help with plan for mini split wiring...

    NEC code rules used to be disconnects needed within 50 feet and within sight of. I haven't read an NEC in about 30 years so maybe they changed the rules or mini-split manufactures have rules that are more stringent.
  13. R

    Minisplits have a mind of their own?

    Based on the outstanding COP of FUJITSU H-Series mini splits, either SEER or COP numbers are near meaningless. Even FUJITSU H-Series with 20+ SEER 2, the Cooling COP(and possibly Heating) crushes almost every other make and model. Settings 7-15 Btu/Hr @ 47 degrees-FUJITSU-Single Zone-Energy...
  14. R

    Has anyone actually used or is using reflectors or mirrors to solve shading?

    If shade similar to Andy's off grid solar garage, shinny AL window screens might work. A few layers with spacing between to homogenize the sunlight.
  15. R

    over head service mast to revenue meter to PV meter to fused knife, IMC vs EMT

    You may be able to get away without having to thread the IMC riser. I believe 2 1/2" EMC and IMC have the same outside diameter. You might be able to use 2 1/2" IMC with a 2 1/2" EMT water tight connector. There used to be a table near the back of the NEC that showed conduit outside...
  16. R

    How good are the newer mini splits at heating?

    https://ashp.neep.org/#!/product_list/ 115754 mini splits reduce that number to 8242 by checking the box ENERGY STAR V6.1 Cold Climate reduce further by moving the size sliders and further by ducting selection/single zone-non-ducted-wall placement clicking on list view reveals who gamed the...
  17. R

    Growatt Warranty Problem

    https://slate.com/business/2010/12/is-the-better-business-bureau-a-protection-racket.html
  18. R

    Trench and conduit advice

    https://www.bergenmobileconcrete.com/make-your-pour-easier-with-our-concrete-buggy/ Random georgia buggy if you need to move/dump some of dug up dirt. Ones with tires (7 mph) and not tracks(<2mph). Some probably hold up to 18 cu. ft. Doubtful if much dirt has a specific gravity greater than...
  19. R

    EG4 2 Ton Solar Mini-Split Question

    https://www.meanwell.com/webapp/product/search.aspx?prod=UHP-1500-HV Temp replacement for solar input? One or the other around the clock? Supplement ?
  20. R

    Thoughts on this article?

    If that article was true, wouldn't there be thunderstorms and tornadoes during every morning and afternoon rush hour traffic? Does anybody have a storm that follows them around wherever they drive. See many other cars with storms over them? Subdivisions with all black roof houses, storms all the...
  21. R

    Conduit size

    Plastic bread bag with parts of bread bags stuffed inside to make it poofy. Sponge rats cost money and suck up water making them too heavy. Also the foam rats probably allow more air to slip past than bread bags do. Funny story only slightly related. Day one: Had to run two 350' conduits for...
  22. R

    Best way to monitor/control battery temperatures in a Victron Ecosystem?

    https://www.walmart.com/ip/Hcalory-15L-Portable-Car-Refrigerator-16-Quart-RV-Fridge-APP-Control-12-24V-DC-Mini-Electric-Cooler-Driving-Travel-Outdoor-Barbecue-Home-Use/873429805?wmlspartner=wlpa&selectedSellerId=101124813 One of this style of compressor portable car refrigerators with heating...
  23. R

    Trench and conduit advice

    Trenching/narrow shovel. Hoe (whore if low budget enough) to rake the dirt back into the ditch. There is something in the NEC about burying conduit underneath concrete. Concrete needs to be a certain thickness and extend out on either side of the conduit minimum inches. Shallow ditch with...
  24. R

    Small system to track solar generation over winter

    https://www.wunderground.com/dashboard/pws/KMNCARLT2/graph/2021-08-26/2021-08-26/monthly Somewhat random, location, date, time frame. Solar radiation near the bottom.
  25. R

    Gravity Generator with weights (like an old style clock)

    Train up and down an inclined track. > 7%(?) incline wheels spin. Winch weight up circular incline that circles your property. The tower idea with the multi-ton concrete weights they have been trying to sell for a few years. The lower blocks contain little if any energy energy. The lower...
  26. R

    Wall insulation building inspection failure

    With approval of all people involved maybe: https://www.amazon.com/Warner-Manufacturing-250-Wallcovering-Perforator/dp/B000I6JLAQ/ref=sr_1_42?keywords=wallpaper+perforator&qid=1691884234&sr=8-42
  27. R

    Evaporative cooling

    Maybe a window swamp cooler aimed at the outdoor intake of a mini split. If that works, make a DIY swamp cooler since the mini split already has the fan. Laws of physics may prevent this concept from saving any electricity.
  28. R

    EG4 minisplit heat pump grounding question

    Do people run 80+ volt, 1200+ watt, DC power supplies as a replacement for the four solar panels for use when the panels aren't functioning(night etc.) Or maybe 32S batteries.
  29. R

    Help me make sure I understand running DC high voltage wires buried in conduit back to inverter from remote (125ft) array

    "I threw those numbers into a DC wiring calculator online. Using 125'" Did the calculator calculate using round trip?
  30. R

    How do DIY folks deal with NEC 690.4 (C) - Qualified Persons Only

    Back in the buggy whip era, my 1991 FL state masters license was good in FL, NC and CA. My 1981 GA state unrestricted license was good in GA, LA, AL, TN, and SC. Things have changed since way back then. NC and FL are now the states in which to acquire state master licenses. Those two will get...
  31. R

    Power Company - bad neutral - no meter for over a month

    So this an underground service/pad mount transformers?
  32. R

    Best enclosure for batteries outside

    https://www.ebay.com/itm/266134567101?chn=ps&mkevt=1&mkcid=28&srsltid=Ad5pg_FY4KaZKJ10pNG8zxvzhIWNdIWhJQg5DuOPNPuWQr2CPv3GkEOkOC8&com_cvv=a0ca8cf311e059d8bc8090c0d8ed53ef9363e1dc2aeea0d3bd8c43122e608eab This company seems to make various size deck boxes that need to be assembled. Walmart...
  33. R

    Is there a 3 way switch for MC4 connectors?

    https://www.ato.com/dc-reversing-contactors Something like that might work.
  34. R

    Generator Output Amps.. Is this as expected?

    If 3 phase is an option. https://calculator.academy/neutral-current-calculator/ A 11.87, B 11.77, C 9.202 = 6.86 neutral
Back
Top