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Fruit Trader

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Everything posted by Fruit Trader

  1. I wonder how much crap made it through those holes to the evaporator. If it's not chewed by a rodent there's something very wrong with that filter.
  2. The vehicle braking system applies load on the rotating roller motors which is measured and displayed to the operator. I believe in some countries heavy goods vehicles include load or down force applied during these tests. Not sure why this is done, possibly to test suspension or vehicle load sensors during tests.
  3. Mains supply isolation requirement for home automation switching devices is mostly decided by the the relay contacts state. If the contacts are dry (volt free) then good mains isolation at the PCB is desirable. Example below Shelly with dry contact isolation. The OP has model without dry contacts.
  4. https://www.eess.gov.au/rcm/regulatory-compliance-mark-rcm-general
  5. Shelly device with powered electronics only, no relay load. All brand name devices like Shelly and Sonoff have some kind of internal protection at the electronics supply circuit. Inline fuse, fuseable resistor or similar. As already mentioned, very short lengths of 1mm cable will easily carry your breaker trip current although an electrician following his code would likely shout foul.
  6. One possible cause of premature failure in LED pool lights. A while back my brother-in-law returned home with some failed LED pool lights from a local pool. Thinking about making repairs we dismantled the lights to find that the electronics sealed inside a clear compound has suffered corrosion and burning. Further investigation revealed water had found its way inside of the sealed area down the supply cable. We later made a visit to the installation and found all poolside connections to the lights submersed in water because of pools flood over design. This service bulletin from Hayward Pool Products points out this problem and the need to seal cable ends at the supply junction. https://deltatriluhur.com/wp-content/uploads/2018/09/hayward_underwaterlight_installation_guideline.pdf
  7. Your statement is pointless without defining accuracy required. I have just repeated the area measurement method made by @Muhendis (the method you previously questioned) on a 10mm2 copper cable using digital vernier caliper which repeated within .03mm. I repeated the test using a 0-25mm micrometer and obtained the same result but the wider contact area of the micrometer slightly improved repeatability.
  8. XLPE is an insulation type. The average accuracy of digital vernier calipers is around .02mm
  9. Would you get back inside and drive an EV that has just been heavily rear ended.
  10. I have not done much reading in these threads but interesting to discover a Sofar KTL-G3 series user. I have some history with this series of Sofar inverters which use passive cooling only. I would be interested to know if your inverter logs 'Temperature De-rating' errors on very hot days. If your inverter is located outside in the shade you probably never see this error. Along with a few guys in a small group, we also use Sofar KTL-G3 inverters (3.3kW version) one for each phase feeding our work sheds. They are de-rated for no export but rarely does the situation arise where we don't use all solar production. Only problems we have had with these inverters are over temperature de-rating solved with extra cooling, over grid voltage solved by changing country code and extracting Modbus information from Sofar technical. Below I show a mod done to all inverters. Electronic controlled cooling fans below the heat sink which includes modified mounting bracket to increase spacing. Back to the subject of this thread, how to see the maximum panel output that is possible under the current conditions. To find potential power output above actual consumption would require a known reference. This might be a small loaded collector mounted next to the main string.
  11. It's very likely this inverter is exporting which means all energy being produced will be consumed. If this is the case, current variations will be from cloud movements and the constant voltage from the inverters control of power point.
  12. Yes you will, every time without fail.
  13. Most ICE vehicle fires can be extinguished quickly often with less than 2000 litres carried on a fire truck.
  14. The video below is a lot more informative and goes beyond the subject of EV fires. The exploding vehicle on charge early on in the video is quite spectacular.
  15. On the monument circle road head out and pass under the expressway then make a U turn. On the left side just before the expressway you passed under; there is a turn onto the toll gate ramp, you really can't miss it.
  16. Does not matter where the fire started as once EV's containing 500 slabs of self oxidizing fuel joined the party it was game over. I hear the ship will enter salvage with a new name Dutch Oven.
  17. The 8 pin 24V ac relay shown earlier will do the job if only operated one time each day. As for the cheap solid state relays, they do not employ the ideal electronic switching method for inductive loads. Very likely it would fail in the on state which is probably not ideal or even introduce a high resistance path and cook itself to death.
  18. Solid state relays for reactive loads like a 1.5HP motor should be chosen carefully. Not all switching methods are suitable. Low price fake Chinese Fotek brand (zero cross point) solid state relays are famous for containing underated low quality componemts unable to handle specified currents. A search for cheap Chinese solid state relays will soon reveal why they are so cheap. A reliable and common solution for Sprinkler controllers like Rainbird and Hunter is to interface with a pump contactor using a small 24V ac relay. Below shows irrigation control we built for a local well installation. The sprinkler controller calls a 24V AC relay which in turn energises the 220V AC pump contactor to supply a feed pump. Example of a off the shelf sprinkler to pump interface.
  19. No matter how much of your personal story you throw at it, my claim remains true. I must say though, your EV obsession and ramblings are somewhat entertaining. PS English is my second language, so I guess comprehension issues are possible. Having said that, people who live in glass houses shouldn't throw stones.
  20. Yes when the solar investment has paid back. Until that point arrives, surplus yes, free at no cost, no.
  21. After being ripped off and given the run around by several Chon Buri vets our family uses the Kasetsart University Animal Hospital in Bangkok for anything complicated. Get there at 7:00 am to avoid heavy traffic and pick up queue ticket. Take with you all info from local vet visits. 13.844378, 100.578134 From Si Racha to this area I used H7 - H9 - 350 - 351 or use Google for other route. https://vet.ku.ac.th/veten/index.php/hospital-kamphaengsaen2
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