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Gerald_D

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  1. In the post above I showed MajorTech's Veti modules, but I much prefer Onesto's Matrix or LeGrand's Ysalis ranges. Modules make a very neat installation. I can think of nothing worse than power trollies and extension cords!
  2. I hear you. At some plug outlets I pulled a second twin+earth through the conduit to feed dedicated UPS modules. See pic, some modules will be blue colour, on the UPS. Feeding a 1.5mm2, and making all the extra module connections in the 4x4 wall box was easier that way. Remember that the whole UPS circuit is behind a 15 Amp breaker near the Victron. (Not at home now, so I stole a pic off the net - I sometimes have the modules on the left as blue UPS) My biggest loads are the fridges, and the cabtyre supplied with them is only 1.0mm2
  3. Some more detail about installation; links for Inverter spec sheet and Watt meter Comments re Victron; When loadshedding ends, the Victron takes about 5-10 seconds to decide that Eskom is really back and only then switches Eskom power back on. It does this seamlessly and I suspect it may be syncing with Eskom before it switches. This delay is great because it is known for the Eskom network to be shaky when it returns and that some home appliances don't like this shaky period. However, when Eskom fails, there is a tiny glitch when the Victron kicks in. Supposedly 20milliseconds and it i
  4. By January 2008 we realised that we are in for serious loadshedding in the long term. I then knocked together a little UPS with a 1500Watt pure sine wave inverter, charger and two 105A.hr batteries. That was before LED lights and batteries in garage door openers and gates. It served us very well until 2012 when we built a new house and wired it for having a UPS. Essentially we have 2meters of cabtyre coming out of the wall in the garage with a blue standard 3pin plug top (like the plug end of an extension cord). This is connected to all the consumers needing UPS during loadshedding. The plug c
  5. Here are the Watt ratings as opposed to the VA ratings of those Mecer inverters: https://mecer.co.za/ivr-1200lbks-12v-power-inverter/ 1200VA model is 720W and the 2400VAmodel is 1440W
  6. A few seconds is optimistic - my Meanwell TS 1500 inverter says it can handle twice the continuous power for 30 cycles (0.6sec) and that is one of the better brands. See: https://www.meanwell.com/Upload/PDF/TS-1500/TS-1500-SPEC.PDF
  7. Your Mecer's VA ratings (1200 and 2400) may be the so-called "peak" power ratings. Their continuous power output ratings could be only half of that. I used to run those Coromasters off a Cotek S1500 (1500VA continuous, 3000VA peak) pure sine wave inverter. I suspect the Mecer 2400VA will do the job, with a bit more noise than usual. Those Mecers are not the best things for running motors.
  8. Have started noticing that Victron drops the float voltage down to 13.2Volt if the batteries have not been used for 48 hours and then applies a full charging cycle every week. I am thinking to emulate this by turning my 13.7V float charger off for most of the time. Floating above 13.5V for long periods makes my batteries weep and it obviously dries them out.
  9. All the new Victron chargers float at 13.2 Volt but then have a full 3 stage recharge once a week. Some people cannot afford Victron . . . . . We can get 20Amp 3-stage chargers at about the R500 mark. But they float at 13.8 Volt which is too high for my liking. I see sealed batteries weeping after a few months of no loadshedding. Taking a cue from Victron, can I put those cheap chargers on a geyser timer so that they only get about 3 hours of mains power once a week? The connected charger has a parasitic draw of 70 milliamp; about 11 Amp.hr. The battery size is between 100 and 200 Amp.hr.
  10. Since I started putting together systems in 2008 to beat the loadshedding problem, I made the assumption that Eskom would be available more often than sunshine. Charging batteries with Eskom makes more sense to me than using solar. Loadshedding would have to get a heck of a lot worse before Eskom is unreliable for charging batteries. My new house's roof is designed for solar, but I don't think that I would be using it in my lifetime.
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