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  1. N

    String lights - conversion from 120v/60hz to 240v/50hz

    Hello - could anyone tell me if a set of string lights purchased from the US (120v60hz) can be used in the UK with a transformer or just a simple adaptor? Globe String Lights, Indoor/Outdoor, Plug-In, 25 G40 Bulbs, White Wire, CLEAR Thank you!
  2. L

    Panel Performance Issue?

    I had 3.96Kw system installed along with a mastervolt K5500 inverter last November. We had various issues with performance and the system apparently tripping out the mains, which in the end was rectified by swapping to the non rcd side of my fuse board, but at the time, the electrician who came...
  3. P

    DC ISOLATOR (faulty)

    Anyone had a DC isolator arc out on them? first time today switched on array and smoke poored out plus the conacts arching out big time!!!!all rated correctly replaced it and all was fine but (bit of a wake up call :) supplier said he supplied thousands and never had a prob so JUST ASKING out of...
  4. C

    Are string inverters safe during a house fire ???

    Hi everyone, I'm new so please be gentle with me. My husband a fire safety officer and has been asked to look into the possible complications of solar during a domestic house fire. He has looked at enecsys micro inverters and understands that these are safe because the system shuts down when...
  5. M

    Out of interest. effect of East/West split on one string?

    I wouldn't do it but a client asked about an east/west split on one string. I couldn't quite describe how bad the effect would be? Would the 8 on the east side(shaded eg.) drag the current down from the 8 on the west (sun shining on)? Or any other answers? Much appreciated
  6. T

    Relationship between AC Watts generated and DV Volts

    Hi I'm interested to know what the relationship is between the two scales on these graphs; AC Watts generated and DV Volts. This is the last two days output from our 20 panel 4kw installation. Can anyone explain it in plain English? :)
  7. S

    Fault finding issue help please

    I have installed two strings of eight panels on a single story building. The top row of eight seem to be performing well. But the bottom string performs only about half to two thirds of the top. Midday results yesterday which was sunny ....... String 1 240v and 1113w String 2 261v and 493w...
  8. D

    String - inverter configuration

    We have 14 panels on a west facing roof wired as two string of 7, and seven panels on a south facing roof, all connected to a Sunny Beam 4000TL. Looking at the DC readings on the inverter, rather than seeing one (south facing) input high in the morning and the second (west facing) low, then...
  9. L

    Start up voltage

    How does one determine the optimum start up voltage? I have a 3.6 kwp system in two equal strings into an Aurora 3.6 OUT inverter. Facing SSE with a little shading.The inverter comes with a default start up voltage of 200v. I think each string can be adjusted independantly down to 110v.Sensible...
  10. D

    split a single string pv array in to 2 using a splitter

    I am a solar installer and i have been told that i can use a mc4 splitter to connect 1 string in to both connections on inverter as they had done this before to spread the load surly this can not be right. as a splitter is used for 2 strings going in to 1 not the other way around
  11. S

    A couple of IR testing questions

    Do you carry out AC IR tests with generation meter (elster) connected ie from inverter to disconnected conductors at the board, or will this damage the meter? I've been linking it out but apart from the test not being true to the installation it can be a pig if the meter is in an awkward spot...
  12. G

    Help about string configuration

    Hello everybody, this is really useful forum i ve learned a lot from you guys! I am writing from Croatia and soon I will instal my first PV. But I have some doubts, maybe you can help me. System is: KACO Powador 12.0 TL (2 MPPT, every can hold 2 strings, range 200-800V) and 52 Luxor 190W...
  13. M

    SSE DNO FIT potential problem 16A

    I have a quote which I would like to go ahead with, but with the proposed cut off with fits, will the below system have any problems with SSE DNO and how would I complete the application form to ensure no problems as there is no space to state two invertors. or would it be safer to reduce by...
  14. R

    String issues

    Evening guys, relatively new to pv and just finding out info from as many installers as possible. Would you use more than 1 string wherever possible for potential shading issues or just keep to 1? whats you best advice/tips on stringing sequences? All feedback appreciated Cheers
  15. Y

    Different elevations and string sizes

    I have a dilemma. A prospective customer has an East facing roof which I can get 10 SANYO HIT-N240SE10 (the smaller size panels). He would also like me to fit 4 panels on a South facing elevation. I realise micro inverters would be the simplest solution but could I use 2 standard inverters on...
  16. M

    SunnyBoy 2000HF with 3.36Kw 14 panel string

    Hello, A friend of mine has just had a 14 panel 3.36kW system installed. When he described it to me I was surprised that the installed inverter ( Sunnyboy 2000HF ) was only rated for 2kW. Is this normal or even correct ? Many thanks Mike
  17. E

    Solar PV Surge Protection

    Hello This is my first post, I am hoping someone can help. I am aware that we need surge protectors/string controllers for large solar pv systems, however I have been informed that for any install over 3.78kWp we need them. Does this sound correct? I know there is quite a lot of confusion...
    • edandrews
    • Thread
    • electricians' talk protection solar solar pv someone string surge surge protection systems
    • Replies: 1
    • Forum: Solar PV Forum | Solar Panels Forum
  18. P

    Number of panels per string

    Anyone help me I have 14 235w rec panels on 2 strings 7 per string but the inverter doesn't click on under normal light levels because of the voltage isn't enough per string can I put 8 panels on one string and 6 on the other to bump the voltage up for the inverter
  19. J

    Advice invited re: 4kW system with string or micro inverters

    Hello all I'd appreciate advice / views on a system we're considering having installed. We have a large roof with room for up to a 4kW system (faces 8 degrees east of south; 45 degree pitch; single expanse from first floor to ground floor level; rectangular lower section c10m wide, upper...
  20. G

    Extra string for pm topup + Quote for Bristol area ?

    This is my first post so please be gentle - Nice forum most comments seem helpful and positive. If anyone would like to comment on the idea of putting a third string on the northeast side of the below roof to topup the afternoon - i think for a short while during a summers day there would be...
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