Looking to buy an Off Grid property.

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Re: Looking to buy an Off Grid property.

Postby Gordon-Loomberah » Tue Oct 03, 2017 4:47 pm

blakamin wrote:... Actual average voltage is 28 volts approx."


Unlikely that 28V is the 24hour average, and if it is, then the batteries wont be in very good condition after 2 years of overcharging. Average is more likely in the 25-27V range, entirely dependent on how much energy they were using.

Any thoughts?


This looks like it was designed with an old mindset when panels were very expensive. These days it is better to go large with the PV array, and not so large with the battery. The existing array would take days to charge the battery from a deep discharge, which is not ideal.

Sunder wrote:The inverter looks professionally installed as well. Looks to be a single RCD for the output, then an individual fuses for each circuit, so it should be safe.


Safe perhaps, but not done correctly. They should not be using an RCD for a main switch! Each individual light and power circuit should have an RCD on it, that way a fault in one circuit doesn't take out everything.

What is the output rating of the inverter?

First priority would be installing more panels IMHO, which may also require a new charge controller.
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Re: Looking to buy an Off Grid property.

Postby blakamin » Tue Oct 03, 2017 4:51 pm

Thank you Gordon... That's the exact type of info I was after!

What panels would people recommend? Rough price?

I wouldn't really want to spend massive amounts just to make the place "livable" right at the start...later on is fine.
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Re: Looking to buy an Off Grid property.

Postby blakamin » Tue Oct 03, 2017 5:20 pm

Actually, thank you everyone for your help, but we've decided to pass on this place.
The land was awesome, but the house was a tad too small and the solar setup was the straw that broke the camels back. If it was a newer system, we might've compromised, but the way it is now, it's not worth so many compromises.

Thanks again to all that answered my n00b questions.
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Re: Looking to buy an Off Grid property.

Postby lantern » Wed Oct 04, 2017 7:43 am

That regulator looks like a BP FBR reg.
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Re: Looking to buy an Off Grid property.

Postby Gordon-Loomberah » Wed Oct 04, 2017 7:52 am

Yes, definitely a BP reg, which probably runs a bit too hot in summer with that paper over the top of it.
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