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petertc
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« on: June 11, 2011, 01:55:54 PM » |
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After 8 to 10 months of looking around and humming an haaing we have finally added pv onto the house.
The garage already has a DIY install that is 3 years old now.
It has 8 x 185watt triansolar pannels mounted via a Schuco rail system with a 1200 sma inverter.
we removed to door bell transformer to get the space for the connection into the consumer unit.
The inverter is mounted on an external wall with an AC isolator, and then the meter another ac isolator is mounted below the consumer unit
Installed price of 5.5k
day 1 picture below
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petertc
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« Reply #1 on: June 11, 2011, 02:01:07 PM » |
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day 3 picture and one from today when the sun is shining.
i have worked out that compared to the max output of my small 640p system this one need to generate about 6.5 kwh for a maximum daily output.
so far today from 7 am through to 2pm (7) hrs it has done 5.5 kwh so i hop that we should hit that OK
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itsnewtome
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« Reply #2 on: June 12, 2011, 01:51:35 PM » |
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Looks good.
Just curious about the inverter. I have recently designed a couple of similar size systems (8 x 185w panels) and they dont configure with the SMA 1200.
Maybe worth checking with installer.
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petertc
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« Reply #3 on: June 13, 2011, 09:32:38 PM » |
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yes i have done that as i down loaded the software from sma to have a look myself.
He has taken the view that there will only be a few hours running each year at max output against the cost of going to a bigger inverter plus the starting voltage is lower than the bigger inverters.
he is sizing at about 83 to 84% of panel capacity.
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Iain
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« Reply #4 on: June 13, 2011, 10:12:31 PM » |
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Hi petertc
Mine is about 85% and came up OK in the SMA design software. But the software also takes into account the voltages/current as well as the power.
Iain
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1.98kWp PV (11 x Sharp 180 and SB1700)
20 x 65mm Thermal and 180ltr unvented
6000ltr rainwater storage
Plymouth
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tange179
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« Reply #5 on: June 21, 2011, 09:07:05 AM » |
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....keep that tree trimmed Pete, you do not want any of that nasty shading  Looking good though!! John. |
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MR GUS
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« Reply #6 on: June 21, 2011, 09:26:57 AM » |
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Peter.
That bird cherry?? is certainly a fast growing tree, whilst pretty can send out a lot of ground roots that will establish a colony of wee trees. i'd sadly consider evaluating it's age & growth then consider what you will do with it as they can get pretty tall, shading will definitely be a possibility unless you influence it now.
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Austroflamm stove & lot's of Lowe alpine fleeces, & a tiny pen15 ..if we're comparing solar set ups!
Noli Timere Messorem
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petertc
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« Reply #7 on: June 21, 2011, 06:57:28 PM » |
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It is a cherry but not edible  . if it gets too big it will come down other wise i wont be insured no tree taller than 10m with in 10 meters of the house. I don't think shading will be an issue. |
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Ivan
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« Reply #8 on: July 04, 2011, 01:06:43 AM » |
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Looks neat.
I hope the doorbell transformer was removed permanently! They consume 2-5W continuously - which is £4.55 - £11.40 per year ( 18 - 44kWh/year). Ideally, replace with a battery-powered wireless unit.
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Navitron Member of Staff www.epogee.co.uk - Solar PV & Solar Thermal Training / MCS |
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MR GUS
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« Reply #9 on: July 04, 2011, 01:26:45 PM » |
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Duly noted & oft forgotten tip there Ivan, ..I'm off to remind a few folk of that one!  |
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Austroflamm stove & lot's of Lowe alpine fleeces, & a tiny pen15 ..if we're comparing solar set ups!
Noli Timere Messorem
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Justme
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« Reply #10 on: July 04, 2011, 01:48:18 PM » |
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How does that compare to the amount & cost of batteries per year for the button & base unit? Also how will the manufacturing cost & energy affect the total energy used per year?
Also the same again for rechargeable bats.
Better would be a clock work unit thats mounted on the door or a real bell & handle.
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Navitron solar thermal system
30 x 58mm panel 259L TS
1200watts solar 120vdc
FX80 Solar controller
Victron 12v 3000w 120a
200w (250w peak) 12v turbine as a tester
6kva genny
6 x 2v cells 1550amp/h 5C
24 x 2v cells 700amp/h 5C
Total bank 4350 amp/h @12v
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petertc
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« Reply #11 on: July 04, 2011, 08:19:14 PM » |
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it was a bit of a blessing as the door bell was so noisy it always made us jump. so al least now no trick or treaters will wake the kids up by ring the door bell. Ivan i always wondered how much power they used. i can't say i have noticed a drop but it should easily cover the new inverter at night |
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pontiff
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« Reply #12 on: July 04, 2011, 08:47:33 PM » |
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it was a bit of a blessing as the door bell was so noisy it always made us jump. so al least now no trick or treaters will wake the kids up by ring the door bell. Ivan i always wondered how much power they used. i can't say i have noticed a drop but it should easily cover the new inverter at night Does the inverter use power at night? |
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petertc
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« Reply #13 on: July 05, 2011, 07:08:16 PM » |
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yes it uses power at night but at very low level 1watt or less
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