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  1. M

    800 lbs of batteries over floor joists

    Interesting. They only span 12' in the mudroom over the garage floor. I am sure because in the crawlspace the i-beams run the other direction. So looks over built!
  2. M

    800 lbs of batteries over floor joists

    I remeasured. Gonna have to go on the other wall now actually. Anyways.
  3. M

    800 lbs of batteries over floor joists

    Left to right, so next to the wall, which I understand is better.
  4. M

    800 lbs of batteries over floor joists

    So "The PSF loading of the floor as a whole is irrelevant except insofar as it relates to the total load in the room." - That helps a ton, thanks! Dont know and google didnt help much. Are you saying to block the joists with perpendicular pieces between joists? or putting another piece of...
  5. M

    800 lbs of batteries over floor joists

    Update on battery. Seems I was listing a model that didnt actually come with kit (although I could still use it. Here is kit battery: Length 20.86 inches Width 10.70inches Container Height 10.62 inches Approx Weight 161 lbs So 8 of these in all. If 2 per shelf, then thats: 320 x 4 = 1280 lbs...
  6. M

    800 lbs of batteries over floor joists

    Heating seems like a risky proposition as well, esp if you get a warm day or two and arent the type to want to check equipment every day, nor depend on electronics to always be reliable.
  7. M

    800 lbs of batteries over floor joists

    I was looking at this: 4-Tier Welded Steel Garage Storage Shelving Unit (48 in. W x 72 in. H x 18 in. D) - Supports 2000 lbs per shelf Batteries: Length 19.02 inches, Width 16.69 inches, Height 9.45 inches Rounded: 20 x 17 x 10 So, this means I could prob put 2 batteries on each shelf or 3...
  8. M

    800 lbs of batteries over floor joists

    To start sort of a side-thread, is there a way, and does it make sense, to heat a cabinet to keep batteries warm? Seems like that would cost a lot of power over time, along with safety issues.
  9. M

    800 lbs of batteries over floor joists

    1. Under floor: Guess I might need to hire a builder to make that happen. Not sure where to do it myself. 2. Plating: sounds like you mean metal plating, but sounds similar to plywood. Again, 1 battery alone is almost too much weight, so no way to save any floorspace by doubling up and putting...
  10. M

    Free NEC Access!

    Clear your cache. Also takes at least 30 seconds on mine to load which is weird, but one more reason I preferr NTT pdf.
  11. M

    Free NEC Access!

    Yes, NFPA is great to get the whole guide for free, but only the NTT version has tons of pictures to show what they actually mean. Get it if you dont already have it. Its 2017, which is what my county uses anways.
  12. M

    800 lbs of batteries over floor joists

    I have a cement back porch, but yeah, its super cold here. If going that route, might as well put in garage where at least its warmer.
  13. M

    800 lbs of batteries over floor joists

    Well, that still doesnt escape the total weight over given area given my scenario, so doubt that's helpful unless it extends a bit beyond the battery edge, which will only help a tiny
  14. M

    800 lbs of batteries over floor joists

    Looking at these silicate batteries. 98 lbs each, and 8 batteries. https://watts247.com/product/14-4kwh-12-24-48v-silicate-salt-battery-no-bms-required-no-thermal-protection-required-non-corrosive-non-explosive-built-for-the-military-6-to-15yr-lifespan/ I really dont see a way to make this...
  15. M

    Free NEC Access!

    That NTT manual with diagrams is pretty useful, but its missing stuff like the battery (section 480). Any idea where to get the rest?
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