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[2020-05-08 04:50:24] <-- Armanelgtron has quit (Quit: https://quassel-irc.org - Chat comfortably. Anywhere.)
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[2020-05-08 04:50:47] -!- Topic for #armagetron is "http://www.armagetronad.org/ | pastebin: http://armagetron.pastebin.com/ | Tournaments: #armagetron.tourneys | Pickup a game: #armagetron.pickup"
[2020-05-08 04:50:47] -!- Topic set by guru3 on 2015-04-22 20:50:50 UTC
[2020-05-08 04:51:06] -!- card.freenode.net set mode #armagetron +cnrt
[2020-05-08 04:51:06] -!- Channel #armagetron created on 2006-11-26 06:42:45 UTC
[2020-05-08 05:00:47] <guru3> I hadn't heard about the 20 hours standard before, but that's interesting.
[2020-05-08 05:01:36] <guru3> https://www.batterystuff.com/kb/articles/battery-articles/battery-basics.html#4 says that 10Ah at 10H means that you're guaranteed 10Ah total over 10H, but if you draw 10A it will last on the order of 1 hour.
[2020-05-08 05:06:22] <guru3> I'm a little wary of your relay package. The relay itself rated for 10A is maybe OK, althought that seems a bit low for what could be a theoretical peak (4000W/12V = 300A over 12 batteries = 25A per battery), but I'm more worried about those screw terminals the PCB track thickness.
[2020-05-08 05:10:30] <guru3> It's impossible to tell exactly what model screw terminals have been used, but they could be under-rated for even 10A. The widths of the tracks the current takes look OK, but I'm not sure about the size of the pads or the separation/sopacing between the tracks. That is, things look close enough to potentially spark-gap in an over-current situation.
[2020-05-08 05:10:48] <guru3> Maybe I'm just being super conservative, I get more and more electrically conservative as the current goes up.
[2020-05-08 05:14:28] <guru3> If 15A is your max expected current draw that diodes are probably fine, but what's your worst case current draw? Based on what you said about 4000W of inverter, with 12 batteries I worked out 25A just before, but it's totally possible I've misunderstood or made a mistake somewhere. I'm not this type of engineer afterall.
[2020-05-08 21:35:33] <Lucifer_arma> I just checked, the relays are rated at 40 amps at 14VDC
[2020-05-08 21:42:33] <Lucifer_arma> I don't know how much current it takes to activate them, but I'm willing to sacrifice one of these boards to find out if they can handle it :)
[2020-05-08 21:44:09] <Lucifer_arma> You're also looking at the wrong relay.  I'm not passing power current through those two boards.  Instead, the load they're controlling is a separate relay that I didn't link here.
[2020-05-08 21:44:22] <Lucifer_arma> That separate relay is the one rated at 40 amps 14VDC.
[2020-05-08 21:44:54] <Lucifer_arma> It does mean there'll be a constant draw, but I've been assured by the seller on amazon (somehow, I forget how) that the constant draw is relatively low.
[2020-05-08 21:46:05] <Lucifer_arma> and right now I don't have the inverter.  These batteries, right now, will only be powering the dc power system, which is basically lights and the water pump
[2020-05-08 21:47:27] <Lucifer_arma> I'm not even looking at buying the inverter for awhile, because I need to get the generator up and running as designed, see if it can power both ACs, and if it can't get them both started, *then* I'm looking at an inverter for the car battery in the array, so that it can provide the surge needed to turn on the second ac unit
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[2020-05-08 22:13:46] <Lucifer_arma> but we can probably move into the rv safely with only one working AC unit, if the reason there's only one is because the generator doesn't put out enough power for the second one to turn on
[2020-05-08 22:14:30] <Lucifer_arma> AC units for RVs run in the range of like 1500W to 1800W, which means my 4kw generator can power both, after they've been started, and assuming that everytime the compressor turns on, there's a power source for the surge needed
[2020-05-08 22:15:11] <Lucifer_arma> the RV initially came with a 7kw generator, which was capable of powering the ACs, the microwave, and taking over the entire DC system, so I don't think it's unreasonable to hope that a 4kw generator can at least power the ACs
[2020-05-08 22:15:27] <Lucifer_arma> the fridge, too, don't forget about the fridge :)
[2020-05-08 22:16:07] <Lucifer_arma> so, right now the focus is on building up the battery array and the smart charging/management system
[2020-05-08 22:16:36] <Lucifer_arma> the next big step after that is going to be adding a solar array, and possibly some wind turbines
[2020-05-08 22:16:53] <Lucifer_arma> it's after all of that that I start seriously looking at the conversion for the generator
[2020-05-08 22:17:25] <Lucifer_arma> so, the talk about fuel injecting the generator right now is actually geared towards getting it running, and just that.  The generator bay isn't physically tall enough to accomodate the carburator.
[2020-05-08 22:18:16] <Lucifer_arma> But if I built a custom throttle body for it, I could make it fit.  :)  Or, I have to modify the generator bay, which is most likely what I'm going to do.  Just make it taller to accomodate the generator I found, then worry about other modifications later, after it's running and I can determine how many appliances it will pwoer
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