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Post by Paul on Dec 23, 2014 4:42:28 GMT 10
Just had to put this up as I am very excited, I just purchased my off grid solar system, It is just a small system but is upgradable just add more panels and more batteries, The inverter is capable of taking 3kw worth of panels and puts out 4000w of power, this will be going on my house to run the new section I am building in downstairs for the kids. here is a link to were I got it. www.aussiebatteries.com.au/off-grid-solar/power-systems/I just started out with the budget xmas special they have going at the moment. I am very keen to get this on and running, so hopefully this will motivate me to get the renovations finished. I will put up some pics when I get it, it will be in the new year. Paul |
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Post by thereth on Dec 23, 2014 12:21:04 GMT 10
great going paul, if its the $2990 one thats the cheapest I have seen a kit for that size. I like the fact it is 48v to, you have less issues that way with longer cabling.
Just be sure you dont drain the batteries, there may be a theoretical 10,000w+ in those 4x 220A batteries, but you wouldnt want to drain them more than 50% at the most.
All in all looks like a good xmas pressie for yourself!!
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Post by Paul on Dec 23, 2014 17:34:13 GMT 10
Xmas present for the wife. I will be setting the batteries to no more then 30% drain so they last me a longer time frame, The system is fully programable so I will set them to 70% then top up off the grid if need be.
I have looked at putting together my own system but for this price it does everything I want it to and more so Im happy with it. In the long run I will add more panels and batteries but that might be for the wife next Xmas. (She is so lucky.)
Paul
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Post by graynomad on Dec 23, 2014 18:20:18 GMT 10
Good stuff Paul. Welcome to the solar set.
If you plan to add panels and batteries bear that in mind when you run the wires, I've seen installs where the wires coming down from the roof were sized for say 20A but then the owner doubled the number of panels and that's a fire hazard. Best to just use wires that are well oversized if you plan to add stuff later.
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Post by Paul on Dec 24, 2014 6:07:30 GMT 10
thanks for the info graynomad, when I finally save up for more panels and batteries, I will defenatly run larger wires.
Paul
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shinester
Senior Member
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Post by shinester on Dec 24, 2014 9:15:21 GMT 10
48V means less effect of resistance in the wire, which means longer runs with less losses, which means less fire hazard. The downsides are that if one battery goes bad, you can't just pull it, you have to replace it for the system to work. Usually maintenance would be at issue for such a problem as well maintained batteries tend to fade out rather than die. In a house set up, it makes lots of sense to use. As greynomad pointed out, it's a good idea to have over-sized wire for the job, particularly inverter/regulator to battery, which should be rated at least 100Amp [48v x 100Amp = 4800W] and it ought to have some kind of breaker/fuse in case of shorts. That much current in DC will literally weld metal. Obviously a qualified electrician [who knows DC!] would be the go.
The less you drain the batteries per day the longer they last which means a over-sized battery system can work out to be more economical in the long term, depending on your daily usage. Fridges particularly are the biggest drain on a household for a normal house being 1/3 of their energy usage.
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Frank
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Post by Frank on Dec 31, 2014 12:20:19 GMT 10
Great stuff Paul, you will have to let us know how it goes once you get it installed.
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Post by Paul on Jan 20, 2015 20:54:04 GMT 10
I went for a drive today to pick this up, I am very excited to get it up and running but it is still a while off yet.  |
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Post by graynomad on Jan 20, 2015 23:21:42 GMT 10
Looks good. All pre-wired eh, so just 2 wires in and 2 wires out?
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Post by Paul on Jan 21, 2015 14:24:33 GMT 10
Looks good. All pre-wired eh, so just 2 wires in and 2 wires out? Yes nice and simple, panels on the roof with circuit breakers, down to this board and connect the batteries and it is up and running. then I just have to put the circuits from the house I want to run into it. I have to get an off grid solar person to come and do some of it so I can get my rebates for them to certify the system. Paul |
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Post by Paul on Mar 7, 2015 14:48:40 GMT 10
I have the bloke coming to do the install next wednesday, He will also do the certification while he is here so I can get my rebate. Once it is installed it will just be sitting mounted as I haven't finished my renos yet for it to run.  new batteries. |
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Post by Joey on Mar 9, 2015 7:11:58 GMT 10
Those look like wet cell batteries.
just keep in mind where you position them, as that much current going into them will make them charge big time and this put off hydrogen gas big time.
this meaning outside storage, maybe build a dog box to keep them out of the weather, and put some sort of ventilation port on the roof of it.
Or in future money permitting upgrade to gel cell or AGM so no more gas
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Post by Paul on Mar 9, 2015 7:26:03 GMT 10
Yeh joey they are wet cell, When I was talking to the installer he said the same thine you just mentioned, I have A hole separate room that will be dedicated to all of my solar gear, I am going to fit a vent fan on a timer for the room but I was still thinking I may have to put them in a box.
thanks for the input.
Paul
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Post by Joey on Mar 9, 2015 10:53:38 GMT 10
make sure it's a sealed box with a vent pipe leading outside, because leaving them in a Locked room is a bomb waiting to happen. Exploding batteries is no laughing matter.... this is for 1 small car battery, letalong a bank of big batteries. I've seen a bank of batteries go up in a workshop and it blew out the roller door from its tracks |
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Post by Paul on Mar 9, 2015 20:23:29 GMT 10
thanks for that joey, I was thinking about a box, after seeing that will defiantly build b box for them.
Paul
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Post by StepfordRenegade on Mar 17, 2015 16:33:30 GMT 10
Just catching up on this, that's so exciting Paul! How are they going now? All hooked up?
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Post by Paul on Mar 18, 2015 19:22:36 GMT 10
Hey StepfordRenegade, Yeh all hooked up and running, Now just sorting out how much I can use them, I also am working out how to use the generator in put with a extension lead. I have it sorted out I just have to get a few bits.
but so far so good.
Paul
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