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  1. D

    ~3kw Solar PV array required urgently in CHESHIRE !

    Anyone out there ( MCS & REAL accrediated ) interested in supply/fitting a 12 Sanyo N-series 240 or 235 hits / SMA SunnyBoy 3500TL with Sunny Beam so as I can make the Dec's FiTs cutoff date ??? To be installed on a south facing garage roof in East Cheshire within 2weeks ?? Dims:- 3500 x 6200...
  2. C

    dual aspect split array with sunny boy 3800v? located in the attic????

    We are having to rush a decision on which of two quotes to give the go ahead to - both who can fit us in for install by end of november. Unfortunately our preferred installer (most reputable) couldn't fit us in. The chap we've so far given our deposit to (with a 14 day cool -off available)...
  3. R

    Ground Mounting and Roof Array

    Hi, we had 2 installations booked for Feb/March which are due to go on buildings that are not yet finished. We are trying to save the job by ground mounting and commissioning the systems this month with a view to putting them on the roof in Q1 next year. We have spoken to Napit, the MCS, the...
  4. 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...
  5. C

    stand-alone PV array aluminium frame supplier ?

    We, like many suppliers, are up against it timewise to install a field-based 16 panel pv array. The main problem is to find Uk stocks of the aluminium extrusions designed to build a panel support framework Our original German supplier needs 2 months which rules it out. Any suggestions ?
  6. M

    Working out AC on a 50kW array

    Hi I need help in the design of a 50kW PV system, 3 phase inverter so 50000W divided by 400V = 125A. 125A divided by the square root of 3 (1.732) =72.17A per phase. is this right?
  7. P

    Array Frame Earthing

    Hi I just wondered how other installers are earthing array frames. At the moment we are bolting onto the rail (and following the DTI earthing decision tree) Does any use bracing bars between rails? Do any of you use a smaller csa (than 10mm) for TNS systems?
  8. P

    Array frame earthing

    Hi all, Quick question on earthing. I am installing solar panel on 2No farms. 1st farm is metal shed, it it is a PME supply. I have bonded the array frame to the building structure (didn't see the need in separate spike). 2nd farm is a wooden shed, metal roof. Again a PME supply. I have...
  9. 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...
  10. 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...
  11. S

    SMA 3000hf bonding the array?

    Hi, guys does anyone know where to bond the array too? using the SMA 3000hf inverter I have never used these before so I am a bit unsure. I was told by my supplier just to bond it which I assumed was to the existing installation but after reading posts on here am I to bond it to the...
  12. A

    PV Array Earthing

    Hi Guys New to the website and PV Install. We are looking at putting an array on a roof with Velux windows in. The array can be touched from the window and I was just after any advice on the earthing requirements for the array. I am using an isolating transformer, but am pretty sure I will have...
  13. 1

    Advice on choosing a PV array

    Hi I'd be grateful for any advice on which PV array to go with. We have a limited budget and have received the following 2 arrays and I can't decide which on to go with. The Sharp array gives slightly more payback, but the Sanyo panels are more efficient, so will this outweigh the slightly...
  14. S

    Problem with array. Heat shading?

    We are having an issue with an installation that we have carried out and we believe the issue may be with the modules. Installed on a fantastic aspect we have 16 number Sharp NU245 modules and a Diehl 4300S inverter. We did have a 3800S but changed it when the supplier suggested that the...
  15. 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...
  16. K

    R.C.D. trip on array

    Greetings all, I was called to a farm house today just to replace a stand alone P.I.R. detector, i had not been there before, whilst chatting over some awfull coffee, The guy was saying that he had a P.V. instalation fitted two weeks ago , the instalation firm however have to come back as...
  17. S

    solar pv array on an outbuilding

    hello, bit of a query, ive done the solar pv course but dont ever remember talking in depth about putting the array on an outbuilding that has its own distribution board, if we take the supply to the board in the out building the generation meter will obviously need to go in there aswell, would...
  18. E

    Rcd tripping ????

    Here is the step up16 x 247 w mountef on metal roof Sb 4000 tl On a submain with rcd protecting inverter , lights and powet Few weeks ago rcd triped . Clieny turned off inverter call meI got there and reset the inverter Every ok waited around nothingI noticed a light switch flashing when turned...
  19. S

    Gavalnic Isolation and bonding to array

    BTw I do realise this is Galvanic not the miss-spelled mess of a word I have used.! Hello, can anyone tell me their thoughts on the inverters that have 'galvanic Isolation' rather than transformers? I have used SMA Inverters before that had this built in and when I spoke to SMA technical team...
  20. I

    Array Bonding Help!!

    Im aware of bonding arrays and equipotential zones etc but im a bit confused about the science behind it, im not sure if im missing something!! How can you earth against a DC voltage?? Also on a side note does bonding the array make it a a potential lightning conductor?? if the array is...

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