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  1. K

    How would you build this sysytem?

    If you are at 12v, id say you need huge diversion, a larger battery and 3 more controllers. Best way is to automate or manually introduce and shed loads as with 5500Wpv there is so much power which could not otherwise be used in the system without a larger battery.
  2. K

    300 watt mono or 330 watt poly??

    The original question was basically 'is it worth 3$ more per module, not double per....... big difference and highly subjective when the cost disparity flip flop when discussed. I understand people are spending their money and when uncertain it gets all kinds of protective, desperate and...
  3. K

    300 watt mono or 330 watt poly??

    @gnubie Sure will. You could check home power in the mean time. And heres some reading you shouldnalso actually read the nrel and doe papers........ if its that serious a subject to you. https://pv-magazine-usa.com/2018/12/10/solar-module-lifetime-predictions-getting-better/#content...
  4. K

    300 watt mono or 330 watt poly??

    As i said....... the absolute worst question is the one that is already answered in the askers mind........ its such a trap i refuse do it. At some point any aspect of architecture amd component selection is highly subjective and it is impossible #1 to be absolutely spot on correct every time...
  5. K

    Building a Portable Solar Unit- Need Critique on Drawing

    Could you post the print as an image file? Try not to download links.
  6. K

    battery lug questions

    Yes, absolutely there are values for all fasteners. Loose electrical connections are a leading cause of fire especially in a battery system without fusing amd sometimes innspite of it.
  7. K

    Definitely a beginner - help welcome

    A great example of de-prioritizing a battery, the seasoned will het it at a glance...... 12k$ us in powerelectronics and a marine deep cycle starting battery fleet of leprosy with tiny cables. The arrays are huge and they bought a large thermal hydronic system that does not work. The system...
  8. K

    Definitely a beginner - help welcome

    If it makes it affordable and can be replaced in a few years, marine deep cycles are ok. Heck most of the long time installation companies charge for true deep cycle and supply marine anyway. A set of marine deep cycle batteries will likely be ok because they live in float amd not cycle use...
  9. K

    Definitely a beginner - help welcome

    Ballast mounts with block. It can be made of wood or metal. No problem.
  10. K

    Definitely a beginner - help welcome

    Now, that is from a person who gives shit advice for diy........ and lives on solar diy......and helps others live on a quasi diy where we gve assistance to actual paying clients to bring it together which most companies avoid like a plague. So i hope the op gets the drift has no fear and goes...
  11. K

    Definitely a beginner - help welcome

    It is an emergency power supply. The battery, grid charger and inverter are the place to put money in this type system, especially if the person is wanting to upgrade or have the option. Op says balcony mount, totally doable and that they have good exposure. ( i left this on my clipboard and...
  12. K

    Definitely a beginner - help welcome

    No, 6v golf car batteries are gc2 7.5"x10ishx 10ish" just like most of them. 119$ 235Ah Crown. Most balconies < spelling? ) would easily be 80" wide or better, so im not sure 66"x39.5" is what you consider huge, but they will be more useful, have less parts cost to mount and have higher power...
  13. K

    General info on solar heater

    Fat old, i got it wrong on nomenclature....... cells do come with reflective backing to reflect light back onto the back side of each cell, hanwha q cell possibly, rec, sunpower, etc. Build it solar is great. I built my immersed coil HE tank from guides there, plumbed with pex and holds reverse...
  14. K

    Definitely a beginner - help welcome

    If your budget is only going to allow so much. Id skip space heating and go with sweaters amd blanketry unless the sun is blazing and your battery is nearly full. There are time you can manage loads in order to use something "too big" for the sytem. Id reach for 4 golf car batteries, a cheap...
  15. K

    Thanks Overkillsolar!

    Wiki says Oceania. Learned some-things new.
  16. K

    Thanks Overkillsolar!

    Where are they out of?
  17. K

    solar newby building out beach patio

    I would start at altestore, comprehensive catalog of essential specialty gear. Decent site to shop even if you dont buy there. Tutorials, references and they will spend time to help you get it in line of you are buying. With that much source festive lighting and an audio system would be no...
  18. K

    General info on solar heater

    I absolutely know. I have three 4x 12' hydronic collectors, 2 air heaters, and 4500w of off grid pv all diy, except for parts and equipment. My point was if you simply buy the materials you will not come ahead on cost. If you attempt to build much less design a hydronic collector amd its system...
  19. K

    Building a Portable Solar Unit- Need Critique on Drawing

    Ill take a look at your build alittle later leaving for home.
  20. K

    Location of 12v high amperage main switch

    Does it remote trip or remote operate/ on and off? If it will remotely switch on and off it would be great if listed and under 300$
  21. K

    Building a Portable Solar Unit- Need Critique on Drawing

    Burndy amd Magna. For battery connections id use magna amd for other electrical stuff on thhn or stranded building wire, machine tool wire, etc.
  22. K

    General info on solar heater

    Because you cannot make it nearly as good. And the trouble isnt wort the result unless heating air. Hydronic collectors are a work of art and will last a hundred years if cared for...... no acidic fluid. Performance and aesthetics are not happening in a diy. Let me know how much a soldering...
  23. K

    Do I need a disconnect between the inverter and the panel?

    More of a hint to the forums..... people will hem amd haw over 3$ breakers "gotta be a cheaper better way" I spent years until i got my own ship, trying to convince the company owners to just use the purpose built equipment for solar. They would provide panels amd an inverter and throw it at...
  24. K

    General info on solar heater

    Or just buy a heliodyne and be done with it. I watch 150degF fluid circulate in january and february in michigan....... it works fine without the caveat at michigan. The guy lives in venezuela!
  25. K

    Do I need a disconnect between the inverter and the panel?

    Its why i wish people would shop real pv equipment stores, altestore, civic, solar biz, innovateus, tandem solar, backwoods solar, too many to list. Integration usually desires more than an electrician shop will have amd it gets clunky with that gear. I just wiped 3 disconnects off the wall amd...
  26. K

    Do I need a disconnect between the inverter and the panel?

    Ac out, pv lines, and generator line if you have one all can go inside.
  27. K

    300 watt mono or 330 watt poly??

    Just s3arch "my poly panels underproduce?" In as many ways as you can. Just last week we were bouncing that ball with used modules from...... installed projects from cali. They get removed for various reasons, mainly because they no longer can do above 80% output.....
  28. K

    300 watt mono or 330 watt poly??

    Installing 12-30 systems a year plus megawatt machines since 2008............. Poly modules dont puke in 10 years but do in fact degrade quicker than a mono. Circa 1968 nrel install sandia labs doe projects still output above 90% original output.... poly has hardly been in the field 20 years...
  29. K

    Do I need a disconnect between the inverter and the panel?

    Ok, this is what i see. The inverter cannot produce more than its max current. Surge is not continuous amd it needs to be reviewed in the case of inverters which can produce a long duration high surge if it will be exposed to it. Aims etc. You should have overcurrent protection between the...
  30. K

    General info on solar heater

    Home power magazine back issues have the absolute best solar thermal gear reviews and diy info. I install these in michigan since 2002. Good technology. You could have heated air or hydronics for collection, storage and distribution depending amd a mix if required. It will work absolutely fine...
  31. K

    300 watt mono or 330 watt poly??

    Just buy what you like. You argued yourself into poly, its cheaper...... easy enough. Mono panels make more name plate rated watts no matter the condition in my experience.... amd have higher power density and last longer. In my book the word is "sold!". Subjective, but most any mono just...
  32. K

    300 watt mono or 330 watt poly??

    Mono will last longer and perform better in high temps. Likely also smaller footprint per watt. Its 3$.......
  33. K

    Solar Set Up Plan - Battery Questions

    Looks like starting at 2kWh -3 kWh usable. Never like to say such things, but id assume at least 400Wh inverter standby, 600-800Wh fridge, 400Wh lighting, plus comms (phone, laptop, entertainment etc.), and in my book i call that 2kWh consumption minimum for critical loads. -The heat pump will...
  34. K

    Schneider Conext spec help

    Also, id check max voltage allowed. It is likely 60V nominal, but id have to read it
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