panels

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  1. Dan

    Solar Thermal Performance During Winter Months? Solar Thermal Forum

    During the summer months I'm sure solar thermal performances are pretty decent, but what about the winter months?
  2. T

    SunPower E20 with P300 SolarEdge Power Optimizer?

    Hi, I have SunPower E20 panels on my roof. http://www.evoenergy.co.uk/downloads/Sunpower-E20-327W.pdf Rated voltage Vmpp at 54.7 V @ 5.98 A. I noticed that the SolarEdge Power Optimizers on the panels are P300's which are rated to 48 Vmax. I would have expected P350's or P500's. Is it...
  3. Y

    Problems with Series/ Parallel strings not adding ampage.

    Hi Guys, im hoping someone can help me. I have recently installed 3.2kw system for an offgrid job. The problem im getting is that im only ever seeing around 300 watts solar generation for the whole system. We have used 10 x Canadian Solar 320 watt panels Voc for the panel is 44.9 and the ISC IS...
  4. gazdkw82

    Solor PV grants/schemes

    I have made some enquiries about Solor Panel installation on my house. It’s something I know very little about tbh. Anyhow iv been forwarded to a company called project solo. They inform me there is a scheme running (not sure if that’s the right term). There scheme is not based on renting the...
  5. G

    Led panels

    Chaps, this guy has 16 x 40w led panels in his office. Now he wants them all switching by one occupancy sensor. But I'm concerned about the start up current, is there a sensor available that will cope? Or one that anyone can recommend. Cheers gents
  6. S

    String Voltage

    Hi just about to install my first solar system. Been a commercial electrician for 29 years but no PV experience. After pushed away from Micro inverters by advice from people on here I decieded on Solaredge. Have sized my system on the solar edge designer software. Now thats telling me I need a...
  7. H

    Cleaning Solar Panels

    Morning guys, I'm new to this forum, and please excuse the fact that this question may have been asked (and answered) already, but I wanted to ask about the best method for cleaning solar panels. The thing is (like many people's) my original installer went bust, which shouldn't have come as a...
  8. Mark Pole

    Help! Solar Pv System Question

    Hello All, I'm seeking some advice about a solar PV system we had installed in November 2014 please. After 18 months, we seem to be consistently short of the predicted generation figures. I tried taking it back to the contractor, but they've ceased trading, and it turns out that they never...
  9. LeeH

    Solar Immersion Options.

    With 4eco gone are there any better systems then the iBoost on the market? Apollo GEM? Solarimmersion? Thanks.
  10. spamwize2

    voltage labels

    Hi Im in the panel wiring industry at the moment and was asked if I have to put voltage supply label next to isolator on the front of the control panel or will a flash label with danger hazardous voltage do? I cant find anything in the regs. Thanks in advance
  11. S

    Addressable fire alarm panels

    Hi, Anyone got any advice on addressable panels and dealing with faults. Installed plenty of conventional systems but not had the pleasure yet to work on any addressable. I appreciate that there are many manufacturers and software needed...I'm just interested on what others here have worked...
  12. S

    Trouble with an existing Pv system Schott Asi 105w panels

    Hi Guy after your best advice, been along to see a customer who is having trouble with his system which has been up and running for just over Four years and the original installers are no longer in business. He has approx a 17kw system of Schott Asi 105 w panels on the roof Appox 162 info...
  13. T

    Cut Solar PV cable

    Hi, A cable from my solar PV panel to the inverter was accidentally cut. The PV panels had some safety mechanism installed and the guy who cut the cable did not get electrocuted. I rang the original installer (***********) and they advised me that the entire system would have to be tested and...
  14. R

    Moving solar panels for extension

    Hi Been searching for help on this but can't find anything similar on the Internet. We had panels installed on our domestic house and registered back in 2013 as at the time we had given up on extending due to major issues with the council but a stroke of luck last year meant we finally got...
  15. M

    Quality of solar panels: quantifying the difference between "cheap" and "good" ones

    Hi, do cheap chinese solar panels really perform less well than better constructed panels? (and how would you identify these better constructed panels?) I am curious about whether they lose efficiency quicker over the years. Are there any numbers out there to quantify this loss of power over...
  16. C

    Replacement panels for a defunct manufacturer

    Afternoon all We have a couple of damaged Day4Energy 240w modules to replace and so far as I can tell this company no-longer exists. Well not in the same form as it did a few years ago anyway. A new company has taken up the technology but are not producing these panels. They have suggested...
  17. The Solar King

    Help Identifying Panels in Tender Please

    I am told by a local authority their tender is generic and performance based. However, here is the panel spec: "The solar PV panels will have a performance guarantee for at least 25 years which will be backed by a global reputable organisation All PV panels to have a minimum of a 25 year...
  18. SolarCity

    Additional panels and inverter to existing system

    I've got a customer interesting in extending his 2.25kWp system, adding 1.75kWp more to bring it up to 4kWp. My understanding is that I can install a separate inverter and meter and that this addition will be paid at the current FIT rate while the old meter gets paid at the old rate. Do I have...
  19. P

    Generation meter for solar panels not working

    We have a Landis gyr E110 generation meter for our solar panels. The reading has not changed since a long time. The red LED light on the right is a constant red ( and not blinking red). What could be the problem here? The installer says a call out charge to inspect it would be £120 and a new...
  20. F

    band D on an epc with panels fitted

    Hello all Can anyone answer this question please?. can you get the top feed in tariff if you make D rating with solar panels fitted. Many thanks feebs73

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