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  1. Pappion

    NEWS: Florida legislature considers ending solar net metering (Nov.23.2021)

    The hours of solar production does not match the full peak use periods. They still need Peak Power plants, but with solar their hours of operation are reduced. They can't pay for themselves with fewer hours of operation. Wiki Duck Curve Confronting the Duck Curve
  2. Pappion

    Do NOT discard a Dead Victron MPPT 100/30 or its kind

    My old camper setup used XT45. It was only 100W portable. Also used them for quick disconnect of the SCC. On the new Travel Trailer I considered using the larger and easy to handle XT90. Ordered with the pigtail attached. BUT... No reason to void the warranty on the used panels from Santan...
  3. Pappion

    Do NOT discard a Dead Victron MPPT 100/30 or its kind

    I had charging issues with low current. The cheap Chinese MC4 connectors were at fault. One of the connectors kept slipping back into the plastic barrel. I was using these on portable panels and they did not hold up to a few insertion cycles. A big clue was the Victron app showing a low voltage...
  4. Pappion

    Fuse holder nut was glowing RED!

    Actually fuses blow due heat. They are self heating. That hot terminal would take out the fuse, eventually. My roof top AC had bad connection taking out the fuses. I no longer own this home, I buy all my EXs a house. Now when I date the first thing I ask: Do you want a house?
  5. Pappion

    Do NOT discard a Dead Victron MPPT 100/30 or its kind

    I have characterized switching circuits in a design lab. MPPT is just another control layer. 1. Current can be limited by the toroid reaching magnetic saturation. Hot and not accurate. PT (Process and Temperature variation) 2. Current can be sensed by voltage drop across components, like FETs...
  6. Pappion

    Generator pops it's GFCI when I plug the rv into it after inverter install.

    amazon review: Kennaldo 3.0 out of 5 stars Almost perfect, but with a major flaw for me. Reviewed in the United States on May 6, 2020 Verified Purchase I like everything about it, save for one thing. If your shore power is GFCI protected It will trip the circuit. I Called tech...
  7. Pappion

    Generator pops it's GFCI when I plug the rv into it after inverter install.

    Manual is not specific about floating or bonded ground types. Inverters can have a bonded ground. Off or Transfer switch should disable it. manual
  8. Pappion

    Global warming is real, why only in USA is there denial ?

    Houston TX area. Parts of Baytown TX is really in the bay now. Sinking due to depletion of the aquifer. Houston area sinking Martha Vineyard, Massachusetts, USA. Is a resort island that is home to the rich and powerful. Why would Obama buy a $12 Million Estate there if it was under immediate...
  9. Pappion

    Global warming is real, why only in USA is there denial ?

    It's worse when politicians get involved. Don't let a good emergency go to waste. Milk it for more Power and Wealth. Performance is optional, Propaganda Matters.
  10. Pappion

    Global warming is real, why only in USA is there denial ?

    I am not denying climate change. I do deny the severity you expect. I also deny that reducing CO2, etc.. will change anything. I accept we are at or near saturation for CO2 effect. More will have almost no effect. I accept we need large scale atmospheric Carbon Capture and sequestration...
  11. Pappion

    China is urging families to stock up on food as supply challenges multiply

    The RV fridge runs on Electric or Propane. Same for the water heater. Stove top is propane only. But I have a crock pot, etc. Furnace is propane only. Some people connect their propane tanks to a Heat Buddy and claim it is far more efficient. But it just has a high and low setting and you get...
  12. Pappion

    China is urging families to stock up on food as supply challenges multiply

    Full time RVer, I can move to rural areas.. Prep some before covid lock down. I have a month or more of canned foods and pasta and TP. Can stretch my water tanks supply from1 week to 3 weeks. Also have a microbal water filter. Propane lasts months in the summer, maybe 1-2 months in winter. Solar...
  13. Pappion

    What Can I personally do to help against climate change?

    Voting is an option open to individuals. So what I mentioned is germane to this thread.
  14. Pappion

    What Can I personally do to help against climate change?

    Old gas and oil wells leak greenhouse gasses. Pouring concrete down a pipe is not a permanent seal. Pipes rust and concrete crumbles. Better solutions are needed. An aerial survey of California identified old wells as sources of greenhouse gas. Resealing them would be a cost effective way to...
  15. Pappion

    What Can I personally do to help against climate change?

    Cow farts vs Termite burps. Termites are wide spread and have a far larger biomass. If the cows don't consume the grass, the termites will. Stock yard cows are grain feed. Additives to feed can reduce gas. VOTE
  16. Pappion

    What Can I personally do to help against climate change?

    Support engineering solutions to remove Co2 from the air. Greens opposed such measures claiming it would allow irresponsible behaviors to continue. It's too late to depend on reducing Co2 emissions alone. Would pair well with Co2 removal. Stop China. They planned on building more massive coal...
  17. Pappion

    Can Solar & Wind Fix Everything (e.g., Climate Change) with a battery break-through?

    Do you want to save the earth or just the humans? The Tibetan plateau uplift exposed rock to the atmosphere. The rock absorbed vast quantities of Co2. Sending the earth into a long downward spiral of ice age cycles, which gets progressively worse. Then somehow we learn to dig up the carbon and...
  18. Pappion

    Can Solar & Wind Fix Everything (e.g., Climate Change) with a battery break-through?

    I think you have the curve backwards. A little has a lot of effect, more has less effect, add more and it tends to flatten out. Effect Saturation point can be debated, is it 95%, 97%, 99%, 99.99%?
  19. Pappion

    Can Solar & Wind Fix Everything (e.g., Climate Change) with a battery break-through?

    Reread posts 212, 213. Cutting Co2 emissions now will not change anything. We are at or near saturation for it's effect. It's logarithmic, not linear incremental. Only removing Co2 will prevent a new equilibrium, with Miami under water.
  20. Pappion

    Can Solar & Wind Fix Everything (e.g., Climate Change) with a battery break-through?

    My professors (night school) were excited about cold fusion and faxed ideas back and forth (no internet). They had 2 conclusions: 1. It's bad science. They will be shamed and one will grab the money and run. 2. It's real and dangerous. They will be shamed and one will disappear with a...
  21. Pappion

    Can Solar & Wind Fix Everything (e.g., Climate Change) with a battery break-through?

    Great responses. I will admit my info is several years old, and I have not reviewed it recently. To save Miami, etc, will require actively removing huge amounts of Co2 from the atmosphere. Anything less fails, impoverishes us, and puts more power and money (carbon credits) in politicians hands.
  22. Pappion

    Can Solar & Wind Fix Everything (e.g., Climate Change) with a battery break-through?

    We exceeded CO2 saturation a long time ago. At saturation more CO2 will not change the amount of reflected infrared. A good portion still gets thru. Fortuitously, it is just a narrow slice of the wide bandwidth reflected back to space. Below upper atmosphere heat is transferred by conduction not...
  23. Pappion

    Can Solar & Wind Fix Everything (e.g., Climate Change) with a battery break-through?

    Can Solar & Wind Fix Everything with a battery break-through? Air Conditioning must become more efficient. Imagine solar heat pump panels that cool and also provide shade. Imagine they could provide heat in the winter too.
  24. Pappion

    Is putting PV panels inside a dumb idea?

    Apparently everyone here loves a dumb idea. ;)
  25. Pappion

    Is putting PV panels inside a dumb idea?

    It won't cut the heat by much. Solar only converts a small % to electricity.
  26. Pappion

    Diode needed for 48v to 12v converter?

    I used an automotive relay to isolate my 13.8v boost (12v input) when the tow vehicle is not providing power to it. Also used fuses on input and output, because I don't trust Chinese electronics. Yea, it looks similar to your finned brick. new travel trailer: I retained the 12v lead acid...
  27. Pappion

    Battery inverter to preheat diesel engine

    There are low temperature batteries. Typically from Canadian vendors. silicon dioxide aka lead crystal
  28. Pappion

    Mppt size

    Also consider you may lose 4-10W in the wiring from the solar panels (at peak watts). Also the MPPT might be 96% efficient, which is a 4% loss. or 48W at peak.
  29. Pappion

    Mppt size

    I wouldn't be concerned about harvesting peak watts on the rare occasions everything works as spec. You don't need the excess, unless your running AC. 1200w / 28v = 42A, 1200 / 25.6v low battery = 46A 4awg may not save you much power. Use an online calculator to compare wire power loss (4 vs...
  30. Pappion

    Help/Critique of RV System, Wire/Connectors

    My OverKill Solar showed lower SOC vs. Victron Smart Shunt. So I change the OverKill Solar SOC settings to better match the charts here. LiFePO4 Voltage Chart? thread
  31. Pappion

    Help/Critique of RV System, Wire/Connectors

    Voc 40.46V x 2s is just ok for 100v rating. There are rare atmosphere lense effects. 3s would give you 42A peak at 14v. So a 150v / 35A controller would be OK, you lose some power when it is easy to produce. Two 3s strings shouldn't cost much more in wiring and you have redundancy with 2...
  32. Pappion

    Placement of bypass diodes

    Bypass diodes installed in the panels have a low reverse voltage rating. I ordered 15A 45V for replacement. Good enough for sections in a panel. Not good enough for entire 48v panel or higher. bypass diodes
  33. Pappion

    39 year old flooded batteries

    it does if you google bell cells. proper links would have helped.
  34. Pappion

    39 year old flooded batteries

    interesting: https://en.wikipedia.org/wiki/Oxford_Electric_Bell
  35. Pappion

    ANYBODY? Need anti-reflection, UL listed panel?

    last I looked you have 10 views
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