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16th Aug 2020, 10:35 AM #1Diamond Member
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can you get a domestic connection off 66kv lines?
I'm looking at a block of land that has 66kv transmission running across the front of it, does anyone on here know if you can get a domestic connection off them? i couldn't find a 66Kv to 415v transformer so i assume no. There is a 11Kv line that runs parallel but it is about 4-500m away and i think it will be many $$$$ to connect. i will get professional advice before i make any purchasing decisions.
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16th Aug 2020, 11:22 AM #2Member: Blue and white apron brigade
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- Perth
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You'll probably find a 66kV to 415V tranny costs close to the cost of connecting to the 11kV lines.
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16th Aug 2020, 11:23 AM #3Member
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- Nov 2016
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- Gulfview Heights, Adelaide
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- 83
No, it would not stack up economically for the power provider to do this. Can you check out the blocks adjacent or nearby and see what they do for power?
Is it a new subdivided block? The real estate agent should be able to provide this information for you, otherwise you will need to contact
the power provider.
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17th Aug 2020, 11:00 AM #4Most Valued Member
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- Jul 2006
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- Athelstone, SA 5076
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17th Aug 2020, 06:38 PM #5
I believe 22KV and above would normally require a substation with the attendant transformers, switch gear, insulators, and safety cage. It would also need appropriate poles etc to maintain ground clearance for cabling between the existing lines and the substation. If the 66KV are in front of your property, you would need to be willing to throw a lot of money at the problem to have a substation established just for yourself. On the other hand, if you were considering a lot in an urban style subdivision with a lot of allotments, then the developer would normally be expected to carry the cost of service provision throughout the subdivision including sub stations, at least in Victoria.
If 11kV runs parallel to the HV lines, but not supported by a pole on your property, in Vic, you become liable for the cost of negotiating easments in favour of the elec company from the nearest existing 11KV pole to the location where you want to utilise the electricity on your land, and then paying for installing the supply line and maintaining it as it is classed as a private line. The elec company would decide whether to install a pole transformer at the existing pole they run from or a pole or ground based transformer at the service delivery point. 11KV 3phase underground would be very expensive, overhead would not be cheap, and depending on what supply capacity you need, running 415V 3phase underground would be both lossy and expensive. We have 11KV and 415V passing at the front of our house, with a pole and transformer 15m from ther point where they located our underground pit. Our 63A 3 phase underground run (190m) was about $17K for cable, conduit and installation in a common trench. Trench was extra to dig and backfill, but was included in site works for the build so I cannot isolate a cost for that. Above prices relate to August 2018 when the work was done.I used to be an engineer, I'm not an engineer any more, but on the really good days I can remember when I was.
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17th Aug 2020, 06:43 PM #6Diamond Member
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Its 20Ha out near Murray Bridge, all the other property's on that side of the road have power from the 11Kv line, and it looks like they were connected before the user pays system we have now. I can't see a connection being under 100k, If i decide to build there might have to go off grid.
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17th Aug 2020, 09:13 PM #7Most Valued Member
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snapa I lived off grid for about 12 yrs, it was a pain, (actually...... ad foul language here). Although solar systems are more affordable and probably better now.
But you still need to run a generator when using machinery welding ect and you never seem to be able to quench the generators thirst.....
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17th Aug 2020, 09:29 PM #8Most Valued Member
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17th Aug 2020, 09:31 PM #9Pink 10EE owner
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- near Rockhampton
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Just buy three long jumper leads.
Or to get real clever, run a line parallel and close to the cables.Gold, the colour of choice for the discerning person.
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17th Aug 2020, 09:50 PM #10
Hi Guys,
There are a number of farms around the area where I am that run totally off grid from solar power, but they also have acres of land on which to put solar panels. I believe that in order for them to get consent for these solar farms they have to provide power into the national grid system. They also have huge digester systems producing gas. Which I imagine would be used for running generators and domestic purposes.Best Regards:
Baron J.
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18th Aug 2020, 05:57 PM #11Most Valued Member
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- Apr 2012
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- Healesville
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Hi Karl, sure, it certainly can be done but the cost might be a bit prohibitive.
I am about to have a 6.6 kw system fitted, the panels are sitting in the driveway waiting for the stage 4 restrictions to be lifted.
I got a quote for a 6.6kw system with a 4kw lithium battery back up, $11700 with the rebates, the battery was the smallest and cheapest and no one that I spoke to was happy about using lead acid battery's, they cannot be used with most solar inverters/chargers, at least that is the line that i was given.
With that system the installer would only hook up the lights, they are all LED, and one gpo circuit, that circuit would run a tv and a poota. So no stove, fridge, kettle, microwave or anything else that requires a bit current could be connected, that is unless i spent more money, a lot more money.....
I went the other way, piffed the battery idea and will make my own battery back up with lead acid batterys and have the charger on a timer so it only charges through the day.
Without the battery and with the gov rebate it will cost about $4700....
If snapa gets a quote for an off grid system it will/may be cheaper than getting the power on but if he has to run a generator to be able work and use his equipment he will certainly notice the fuel bill.
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18th Aug 2020, 08:51 PM #12Senior Member
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- Oct 2015
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- melbourne
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- 473
Lots of lead acid systems around.
Look up victron and selectronic.
Agm rather than wet acid.
There are other battery technologies around, eg redflow, but I doubt they will be cheaper.
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18th Aug 2020, 10:44 PM #13Most Valued Member
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- Healesville
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Yup, Russ there are plenty of systems to choose from, I had a selectronic inverter on my old off grid system and it worked faultlessly, I recently checked them out again and found them still to be leaders in the field, because I have 3 phase power here I also need a 3 phase inverter to feed into grid, the selectronic has an inbuilt battery charger and this can be programed to charge pretty much any type of battery, it is packed full of smarts but all that comes at a cost.
Here are some prices for Victron and Selectronic systems. https://www.ballaratsolarpanels.com....-packages.html
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19th Aug 2020, 06:42 PM #14Diamond Member
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- Mar 2014
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- South of Adelaide
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Thanks for the input everyone. If i do buy it, i think i will just build a off grid weekender and keep my workshop at my parents place.
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19th Aug 2020, 09:28 PM #15
Hi Guys,
I had a look at that advert https://www.ballaratsolarpanels.com....-packages.html !
Those solar panels seem very expensive compared to what they cost here in the UK. A 350 watt panel is less than £100 today delivered. I paid £100, seven or eight years ago for a 300 watt panel to put on the roof of my camper van. A 16 panel array is only £2k including the roof mounting hardware, though the grid tie inverter is extra on top of that.Best Regards:
Baron J.
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