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  1. W

    Commercial Adding to an existing PV array - Feed in metering

    We have customers who want to add to an existing PV array. I know they cannot receive FIT generation payments, but what about additional power returned to the grid - can they be paid for any additional power fed back?
  2. G

    Photovoltaic array test form F43

    Hi all, Just wondered if anyone could offer advice on filling in the PV test array form? There is a section on protective device. I assumed it was the MCB but there is a box for DC rating and kA capacity. This leads me to believe it refers to the DC isolator?? but thats an isolator not a...
  3. G

    Solar Array confusion

    Hi guys I have connected 8 x 250 watt 35 v solar panels in series to connect to an enfinity 2kw inverter. The open voltage I get from the array at the dc isolator is 220vdc or so, but when testing at the dc inverter terminals I am only getting around 68vdc. I have had the inverter (enfinity)...
  4. S

    Inverter for 450w array - any ideas

    Ive been asked to price for a small system using 9 x 50w solar tiles (new build slate roof). Does anyone know of an inverter that will be suitable?
  5. D

    Removal of panels - Small job, anyone?

    Hi, Is there a Solar electrician/installer available to help out for this small cash job, please? I'm after 2Kw worth (9 from memory) panels and their supporting frames to be uninstalled/removed from a north facing side roof in London E13. Pretty flexible with dates, still nothing planned as...
  6. Lionscourt

    DC fuse blowout

    I was asked earlier this week to look at a solar system on an office/warehouse that had stopped working (not my install). The strings all come into a Fronius DC box on the roof. When I opened it up it was pretty clear why the system had stopped producing: I'm looking for opinions on what may...
  7. S

    New System - 2 Arrays - Wondering why low voltage on 1st array

    Just had a new 4kw solar pv system fitted, with two arrays of 7 panels, one above the other in the same direction. I flicked through the statistics and noticed that the first array was only producing 1w, when the 2nd array was producing around 900w. So I checked voltage and found that was on...
  8. edexlab

    eversolar 17000tl

    Can anyone help me with finding a pdf of the installation manual for an eversolar 17000tl I've been on lots of sites and can't seem to find a proper manual just data sheets, I've been asked to take a look at a 50 kw system which has issues, and had a look for a manual last night gave up in the...
  9. Worcester

    BenQ Panels - grounding

    Don;t you love it :) Got an isntallation to do next week with BenQ 325's and now our suppliers are offering PM318B01 in lieu of the PM096B00, and it would appear that the 318's need grounding.. I Don't have a problem with the array, (used to do that anyway ..) however it also says...
  10. M

    Peak output exceeding quoted panel output?

    Hi - I have a 2.99kW solar array, and the top output I have had had previously been yesterday's 2800w at one point at lunchtime which I was more than pleased with as I was under the impression the maximum could be 2999w? Today on 3 occasions output was over 3000w (peak was 3080w). Have I got the...
  11. S

    TL inverters IR testing

    Sorry to raise this question again. What are you guys getting on your DC IR test's on new installs? I've been doing some DC IR testing on Fronius 3.6 IGTL inverters and they are coming back as 50-100M ohms which is fine as far as DTI guide says, but not what I was expecting ie >999M ohms type AC...
  12. C

    panel loss

    my father in law had an array of panels fitted, the inverter had a digital display that showed a flat line that equated to the number of panels he has installed, that flat line has now equated to having 4 of the panels disconnected. The installer has said there is a problem and downloaded the...
  13. D

    Ground mounted solar

    Would you know the advised distance between solar frames on a ground mount system Ie one system directly behind another? The back of the first system is 1900mm affl and the next system behind this should be 9000mm away to clear sunlight at 12 degrees in decemeber (its in scotchland!) But that...
  14. M

    Dti Guide..... When will it be released??

    Hi, does anyone know if there is a proposed release date for the 3rd edition??
  15. G

    circuit advice

    can I check this ground mount system circuit with some one please. Henley block out of tails feeding existing board from cut out to include a small garage consumer unit with a 16A RCBO. AC isolator, generation meter, 6mm2 two core SWA (60meters) to AC isolator - Inverter. Earth inverter as...
  16. A

    RCD tripping

    Hi All, First time for this so unsure what could be the cause. CSUN 250 panels - string of 16 connected via 4mm DC cable to Fronius IG TL 4.0 feed to CU via 2.5mm T+E DC cable run including the array is 22m and the AC run is 12m. Random tripping of the RCD, AC circuit is okay continuity and...
  17. T

    Voltage output from 15 x Sanyo HIT N235W array

    Hi Guys Need your expert opinions and advice here - I have a solar array installed comprising the 15 panels connected to a Fronius 3.0 IG TL. I just checked the voltage being registered from the array (given it is cloudy and rainy conditions at the moment) and total voltage from the array was...
  18. S

    Guides for ground mounted systems?

    Hi All, Anyone have any guidelines for ground mounted systems - most of what I can find is for flat roofs rather than installations in someones garden. Trying to find things answers to things like: do I need steel armoured DC cable? earthing of array? DC isolator next to array in housing or...
  19. D

    Solar earthing re: isolation transformer

    Hi Guys Do you know whether I could fit an external isolation transformer up to a transfomer less inverter, to save me earthing the array. Is this ok and possible. Just don't want to earth array as customer doesnt want the driveway to come up etc. Or is the only way to install a TL Inverter...
  20. P

    Recognising a duff panel

    Theory's great but it's only when a problem comes up you really start to learn things..... My relatively low number of installs to date have gone to plan so I'm hoping a few of you out there have hit more problems than me. Just put up a 14-module rooftop, two strings of 7x245W panels. Al lthe...
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