My New Installation - How to buy

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My New Installation - How to buy

Postby Bob James » Sat May 27, 2017 7:36 pm

I have been looking for panels and systems and was lucky enough to attract a guy who had changed his solar system to a hire type system in Queensland Australia. He hires the panels and inverter and his input to the grid is supposed to cover his monthly payment and give him some back ?

I'm waiting to see what he thinks about that after a few months.

Panels
However he offered me his 10 panels which are 250 watt jobs for $20 each. No Inverter , the installers took that.I guess it was only a 2.5KWH type anyway. I snapped it up even though it was a full day drive to get them. Mounting hardware and rails came free.
IMG_20170525_172902.jpg
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There is conflicting data on the web page but it says Perlight Solar started in 2006 so they can't be more than 11 years old and the PDF for a similar 60 cell panel warrants 90% at 10 years old . Well I dont think they are putting out better than about 70% atm and voltage is at 174V with 6 panels so they seem to be passing on voltage fine.



Inverter
Then I advertised for an inverter and there were a few around but they still wanted big bucks . Considering if you buy this way there is no way to test it before you buy . There is no way to test it after you buy until it is attached to a system and there is no way to test a grid tied inverter without an electrician connecting it in to the grid which means you have to pay the powerco up front .Thats the legal way anyway. What you do with your own system is up to you until you want to connect to somebody else's grid!

Dilema ! There is no warranty either of course. So they should be cheap to buy second hand. The sellers I came across were fresh into selling them mostly and did not realise they have to be cheap for me to buy them .

Eventually negotiated a 1.5KWH job for $70. Put it all together with 6 panels initially ,got approval and an electrician did the install check and let me put the panels on the roof and run the cabling. One of the panels still had a switch attached so I removed that and placed it inside for access.
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So there it is , a 1.5 KWH system for $270 plus installation

Results
Interestingly I don't know how old these panels are and don't know how to find out . The owner did not know. Probably 10 years or more judging by their output -about 800 watts at a pretty sunny time. See above . So I put 2 more panels in the string as I had plenty of headroom to the 1.5KWH and the inverter says maximum input 1875 watts so it should be safe. Its now showing 240V inputbut I have yet to see what watts are produced at peak times.



Anyone have any thoughts on this?
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Re: My New Installation - How to buy

Postby davidg » Sat May 27, 2017 8:48 pm

Technically, according to the regs throughout AUS what has been done is illegal, period.

Regardless of whether a sparky checked it or not.

Sorry to say.
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Re: My New Installation - How to buy

Postby Bob James » Sat May 27, 2017 10:26 pm

Technically everything you do is illegal nowadays . Have you noticed . The Survivors are just ignoring all the shit , like this post and trying to stay sane . What you worry about is your own business. Why you feel a need to make that post is also a bit questionable . If you want to be a policeman ...go enlist

Oh btw I can do whatever I want with my own system period . Its nobody else's business legally so you are spreading false information knowingly to try to enhance your own business. Now that is illegal and I am one with the legal knowledge to follow you up , and will.

The Electrical laws can only apply if and when the grid is connected and that requires a licenced electrician to certify the system .
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Re: My New Installation - How to buy

Postby davidg » Sat May 27, 2017 10:46 pm

Bob James wrote:Oh btw I can do whatever I want with my own system period . Its nobody else's business legally so you are spreading false information knowingly to try to enhance your own business.

If LV electrical work is involved and it is within Australia then what I stated is correct, does not matter whether you like it or not. Essentially if you are not a licensed electrician or registered electrical apprentice working under the direction of a licensed electrician then it is illegal to do LV electrical work in Australia. There is an exception to this, it is a "remove and refit" licence which has specific conditions.

Bob James wrote:Now that is illegal and I am one with the legal knowledge to follow you up , and will

Stop spouting rubbish.

In Australia what I stated is correct, whether you like it or not.

I really don't care whether you personally deliberately break Australian electrical regulations or not. However suggesting others should as well within Australia is just not on. I have offered advise freely to plenty of people.

BTW, based on the description of the way the system is installed and connected, it does not meet Australian electrical STD's regardless of being off-grid or grid-connected. #just saying.
SPS Standalone Power System/Hybrid specialist - Store the Sun!
SELECTRONIC SPMC482-AU, 8.2kW's of Arrays
Selectronic Certified AC-Coupled Fronius 8.2kW Inverter
1900Ah 48V Bank

An OTT Genset for a house.
PVOutput Stats

Sparkys light up your life :)
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Re: My New Installation - How to buy

Postby Bob James » Sun May 28, 2017 9:45 am

Well actually you are partially right and partially wrong .So sorry to say.
When I installed the panels I had them in a 3 by 3 arrangement using 9 panels total. I tried to keep my 48V system charged from them but ran into problems continually reducing the 90 volts to 48 and had way too much power coming in . Tried with other lesser voltage configurations too ,so I decided to get the inverter and convert it over . Hence the above post. I'm in whats called a "remote rural area" too . Anyway remove the post if it offends anyone . I don't care. Only wanted to show that there are many ways to skin a cat.
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Re: My New Installation - How to buy

Postby davidg » Sun May 28, 2017 9:44 pm

Bob James wrote:When I installed the panels I had them in a 3 by 3 arrangement using 9 panels total. I tried to keep my 48V system charged from them but ran into problems continually reducing the 90 volts to 48 and had way too much power coming in.

Using the correct product/s would have resolved this, for instance using a "Midnite Classic 150" MPPT charge controller or if you wanted to go well beyond the approx 5kW's of panels able to be used for a nominal 48V battery pack, then multiples of the Midnite classic (up to 10 can be interlinked), you can have many kW's of PV charging and supplying power, admittedly this is DC coupled but most certainly works well and has temp compensation etc. If you add a "whizz-bang Junior" and applicable shunt you can get all sorts of other information. The units are not cheap but they certainly do the job and very well.

Bob James wrote:I'm in whats called a "remote rural area" too.

I have a farm it may not possibly be as rural as you might be but, things like electrical should still be done to at an absolute minimum and preferably much better than the existing STD's of the day.

Off-grid does give more options to do what you want, but meeting the actual electrical regulations correctly should still be at the top of that list, that includes the correct way to do an installation and have it all connected, etc.

I'm not talking about "clown corp" a quasi-pusedo authority that's a pain in the arse.
SPS Standalone Power System/Hybrid specialist - Store the Sun!
SELECTRONIC SPMC482-AU, 8.2kW's of Arrays
Selectronic Certified AC-Coupled Fronius 8.2kW Inverter
1900Ah 48V Bank

An OTT Genset for a house.
PVOutput Stats

Sparkys light up your life :)
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