by dashony
The temperature was around 20+ degrees C (little over 20), full sun at that point, around 11am and here in Australia - Victoria the summer just started. I found this weather the best for solar panels. I watched the 100w panel putting out as much as 110w ! Crazy! If I see that again I'll make another video. The grid tie inverter gti is 250W model SUN-250G you can see? it in action in some of my other videos. Thanks
by EskimoJan
Comment on your video: 100w solar panel exports 101.1w to the grid 101% efficiency
Impressive ! What Grid Tie Inverter are you using and was the weather cold, since the panel was putting out so much?
by Xoke
You are right that is about 330w/h, 8Kh for day and 24Kw a month.
by dashony
Hey Xoke, are you sure your house consumption is only 330w a day?
I'm sure that you meant 8kw a month but my daily use is about the same
as your monthly consumption and more. But if that's the case great!
You'll be doing well with your system once you have it all running.
That inverter is what you need for your system. Seems like it is made
for a 12 v system and the wattage is fine too. The amount of panels
you are intending to connect is the right amount of panels but I
wouldn't recommend adding any more than your 325w. That will be enough
to keep your gti working on about 280 to 300w if you're lucky.
Recommended for that gti is 300w input. You have 325w in panels but
that's fine as you won't get more than 300w output and if for a short
period of time you do, the grid tie inverter is ready for up to 360w.
So, go for it! If your daily output is higher than your daily house
consumption, that is great, that means your power bill will be very
small and your power meter will be spinning backwards which means the
excess power will be exported back on the power lines on your street for
your neighbours to use. If you don't have a smart meter the house meter
numbers won't spin backwards which is good this way you don't get in
trouble with the electricity company. In order to build credit with the
electricity company by exporting power back to them and the meter
numbers to roll back you need a smart meter ( a 2 way meter ) and your
system must be certified. If you really manage to produce more than you
consume, ideally will be to implement a switch or something to export
that power in a battery bank so you don't lose that power. But that
probably means you may have to manually switch from exporting to grid
to exporting to your battery bank. I can't think right now how to do it
better. One other thing I wanted to say, when you are intending to get
more panels, get another gti and connect it in parallel with the other.
Don't overload this gti with more panels. Good luck! And keep me updated.
Watch my video " watch my meter spin backwards " is on my website under
videos I posted a link below. That will make you feel good and want to
get your system setup soon ! :) good luck again !
by Xoke
Hi Dashony, I'm thinking about buying a GTI of 360W, and build five solar panels of 65W each, a total of 325W. have an average daily consumption of 330W, about 8Kw per day. 1 - All these panels can connect safely to 360W GTI? 2 - what happens if the household consumption is lower than that produced by the GTI? I am asking you these questions because you were the only person with information available on this subject. already contacted you in the forum by the name of Xoke. Thanks for the help Regards Xoke
by Xoke
Hi Dashony, thanks for the tip, Cheers Xoke
by dashony
@Xoke, I found this link for you to have a look at (link hidden) Ask the seller to confirm that what he stated in the Specification table (DC Input Voltage Range 10.8V~30V) is correct. If it is, that means it will be just fine for your system. Have you measured the output voltage from the 12v wind turbine? It has to be somewhere around 18v. I wouldn't connect the GTI straight from the batteries as they put out too many amps. For that you would need a massive GTI. What I would suggest to do is to implement a switch to be able to charge the battery bank (you must have a power charge controller for that which you probably already have)once a week to have it charged in case of a black out and have a normal inverter connected to it so you can use the power from the bank when needed. Let the power from the wind turbine go through a 30A fuse and straight into a GTI and into the grid from there. That's the best I can think at the moment for your system. Most of the GTI today already have a "power islanding" feature; make sure yours will have that so you or the street electricians don't have any surprises. Good luck!
by Xoke
Hi,Dashony I have a 12v 441Ah battery bank, a 500w Hugh Piggot wind turbine and building a second one. Maybe this kind of inverters push too many amps from the batteries. Hi have a friend that damage their grid tie inverter when left then connected to the batteries in a wind day. cheers Xoke
by dashony
hi, can you tell me what size battery bank do you have? 12v battery bank ? And how many Ah ?
by XOKE
HI, I'm thinking in buy a 250w grid tie inverter. I have a wind turbine 500w-12v system, can I connect the grid tie inverter direct to the batteries? I have a dump load system rated to dump at 14,4v. cheers xoke
by dashony
have a read here on the website under projects than go under inverters and there is a description of each: modified sine inverter, pure sine inverter and grid tie inverter. If you don't need a grid tie inverter I can help you decide between modified sine inverter and pure sine inverter. Let me know here, add a comment. cheers
by dashony
Do you want an inverter to export the power to the house grid or just to use the power as it gets produced? Do you have a battery bank?
by eliden
which inverter do i buy? modified or unmodified inverters?
by dashony
Dan, the power meter I've used is just a standard meter. They can calculate the power in both directions. When you plug it in the power outlet it reads the power from there. Once you plug a grid tie inverter into it, automatically detects the power going in other direction and gives you the input readings. Cheers.
by Dan
Hi. I was wondering what kind of power meter you are using. can you use any standard electricity meter? I thought you need a special one as the juice flows in the opposite direction? Thanks, Dan prionoo@yahoo.co.uk
by dashony
Thanks Mike, I'll have a look
by Mike
I found your article: -hidden- I also noticed that the site owner changed all your links to no-follow links, robbing you of all their seo value. He robbed me too, so I already contacted him using his contact form, and I thought you might want to also. Thanks, Mike
by dashony
2 new videos added today! Check out my video player under VIDEOS
by dashony
cheers guys, appreciate your comments, based on your comments I've changed my system a bit, I've disconnected one of the grid tie inverters, I'm only using one now. I use one panel (24 V) to recharge my battery bank (24 V) and just use the power from batteries when I need to and the second panel, (12 V) is going straight to the grid tie inverter and in to the house grid. And yes you guys are right the amps coming from the battery bank are a bit to high for the GTI and if you want to use the system like that you really need to keep an eye on the GTI otherwise it gets overheated and further from that you can damage it. Nice and simple now. I didn't forget about my next video as I promised about my power meter spinning backwards I'll get myself together soon and post it out to you. Cheers
by michael970
Very nice system and a very good video great job. Keep us updated TAKE CARE
by OBXSOLWIND
Cool video looking good. I love the nice and clean setup. CHEERS NC
by taztaz79
Wow that's a nice setup you have there! Looks professional! I have a setup much looking like yours.. I have 4x 150Ah 12V connected as 24v (300Ah). These I have connected to a 250w grid-tie inverter just like you.. I have the setup with batteries right now since i can't have the grid tie running all the time. Only when i consume more power on a phase than the grid-tie put in. So I got my grid tie running only when the heat pump is on.. :) ..
by dashony
Wickedman9mm, I've attached a picture-drawing of my system here on my website under projects. Have a look and let me know. Cheers
by WICKEDMAN9MM
Dashony can you make a drawing showing how you wired your system?
by WICKEDMAN9MM
Nice vid, nice equipment too
by dashony
I fried 2 China GTIs as well but since I'm using the US GTI didn`t have a problem with it, but I still have that fear so I only let it work for a few hours until it gets hot and turn it off to cool down for a bit. Once I get more panels I`ll connect them to the GTI and I`ll just leave the batteries connected to the normal inverter. Cheers for the comment, I was wondering if anyone else had problems with the GTI connected straight to the batteries.
by solarwindaus
Hi dashony, I like your work, very tidy. one thing worries me is that i have fried two pswgt-300 inverters by having them directly connected to the batteries, and have since heard only pswgt-600 and above can handle direct battery amps. i was using similar batteries and 2 x180 watt solar panels through a Missouri wind and solar mw160cc dump load to the inverters and grid, with 25 amps plus into inverters also hooked up is a 500 watt mws turbine but it was putting in less than 5 amps. cheers
by dashony
WulfBand, just briefly, a normal inverter is made quite simple in order to amplify the voltage from 12,24 V or other, to a higher voltage like 110 or 220,230,240V and from DC to AC so we can connect and use our home appliances. The grid tie inverter is made so when you plug it into the power outlet it firstly reads the type of power that is running in your home and creates identical power to export to your grid for home usage, when the normal inverter is not electronically prepared to export and if you do try to plug it into the power outlet it will without any doubt BLOW UP! cheers
by WulfBand
What is the difference between a Grid Tie Inverter and the other Inverter ? Can't you use the other inverter as a Grid Tie Inverter ?
by michael970
very nice system and a very good video great job. Keep us updated TAKE CARE
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