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Recent content by Sophias_dad

  1. S

    Solar power roof

    I realize now that my math was wrong. I was using 112W for a square foot of 'ideal' cells, taking every bit of power(both heat and light) that was incident upon that square foot of cells. That 7840 is wildly over the 1200W, so I was a dumbass on that too. The real power of a square foot of PV...
  2. S

    GPS include supercharge stations

    www.plugshare.com will let you know mostly-only-supercharger stations if you set the power to >= 75kw and plug type to NACS. Be aware it might also catch some newer DC chargers that are not Tesla Superchargers but now have NACS plugs. www.supercharge.info will show only superchargers.
  3. S

    Solar power roof

    I don't refuse to harness it, I think its just REALLY suboptimal to do it with car mounted solar panels.
  4. S

    Solar power roof

    1200W is 10 amps at 120v. Charging at 12A(the usual 5-15 rate) would be 1440W (aka DOUBLE what these panels can MAYBE supply, in Arizona at noon in July)
  5. S

    Solar power roof

    I would, but I'm not a sucker. Even their own documents suggest they are stretching the truth. 1200W is essentially a 10A 120V circuit's worth of power. You can try it yourself with a UMC plugged into a wall outlet. If you get more than 3mi/hr reported, I'll be surprised. 3mi/hr times 7 hours...
  6. S

    Solar power roof

    I saw that on a youtube video a week ago, I think. SBSP does indeed have a better chance of being a 'thing' than a laptop sized solar panel powering a car. Starlink is filling two or more very significant niches, where terrestrial fiber/cable just doesn't go and the mobile market(RV's...
  7. S

    Solar power roof

    I'd certainly agree. I was specifically going for best (ideal, unrealistic) case and the math still doesn't work well at all.
  8. S

    Solar power roof

    I think the main disconnect here is the camp that says "solar panels on a car roof will make it so the car never needs to plug in" and the camp that says "solar panels can help slightly" I like math, as those who have read this thread can attest. So lets do some math on that 185W panel, and put...
  9. S

    Solar power roof

    Did you not see that the absolute maximum energy available in sunlight is around 1120 watts per square meter? One handy laptop is about 1 square foot, or 1/10th of a square meter(closer to 1/11th, but I'll be optimistic. This means that if you have absolutely perfect solar panels that absorb...
  10. S

    Solar power roof

    "Said to provide" is a buzzword for "never gonna happen". "Reckons"? That sounds like they probably know it won't, but don't want to tell you. Literally 30 seconds of web searching gets me this "On a cloudy day, a solar panel can typically produce 10 to 25% of its typical power capacity. " and...
  11. S

    Solar power roof

    Your point two is utter crap(sorry to burst your bubble!). There is TONS of extra grid capacity right now. The grid and its generation plants are built for worst case hottest or coldest day scenarios. You can easily tell EV owners they can only charge at off-peak times, either via edict or vie...
  12. S

    Mobile charger amperage limit

    At least in the US, home wiring and breaker used for an EV is required to be slightly oversized to handle the continuous load(defined as >=3 hours of continuous draw). In general the electric code here is stupidly conservative, so that oversizing may not really be necessary. If your...
  13. S

    Mobile charger amperage limit

    https://www.tesla.com/sites/default/files/pdfs/charging_docs/gen_2_umc/Gen2_Mobile_Connector_en_EU.pdf says its good for 13A. It should in theory be able to do that forever(several years continuously). Even in normal charging, it'll run for 4+ hours, which is plenty of time for it to reach...
  14. S

    Mobile charger amperage limit

    I had noticed that OP was in Israel and specifically avoided phrases like 32A as a result. The UMC should be capable of limiting power to what it can sustain regardless of which country/power supply its connected to.
  15. S

    Mobile charger amperage limit

    While it may be 'better' in that it will be less likely to fail, you should expect the charger to be able to run at its max power without failure forever(within reason, like years)