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  1. S

    how to do the irradiance and short circuit test

    ok here is my question, i had my mcs audit last week and all went fine, the only point he pick up on was my short circuit and irradiance test, how do you do this test and how do you calculate it, i thought i got told on my course not to short the panels out as you could damage them, but the...
  2. B

    some items for sale.

    Hello everyone, Just some random items inc tool, that are for sale in the HP postcode area: PM me for prices, these will include P&P. All multiple items can be sold separately. The chainsaw and reciprocating saw are buyer collects/meets me at convenient location. Ryobi 40cm 16" petrol...
  3. M

    PV module breakdown

    Has anyone got any ideas what may be a simple way for a customer to determine whether a PV module has broken down in an installation of around 50kWp? I'm aware that this will infuence an entire string, but is there an easy way to determine this? Cheers
  4. A

    Forward & Reverse phase lighting dimming module

    Can someone give me simple explanation (Do not too technically) about how lighting dimming module works for Forward or Reverse phase? If any other link that I need to refer, please advise.. Your cooperation on this matter is highly appreciated. Thank you. Regards
  5. G

    Confused about pv systems commissioning test sheets.

    Trying to get my head around pv system commissioning sheets ready for future mcs assessment. How do i work out my array parameters Voc (stc) and Isc (stc). How do i find out the dc rating (V) of the protective device and also can anyone explain how string test method annex -2 Voc, Isc,Sun is...
  6. S

    Module covering and sun dance!

    If there is ever any sun again what does everyone use (if anything) to cover the modules during installation ??? And could someone further South send some instructions for a sun dance up please? Not only has Sharp cocked up our installation schedule but now it's forescast for rain all next...
  7. M

    Strange buzzing from db and dimmer switch module??? puzzling!!

    Hi all im a qualified electrician with 6-7 years of experience under my belt and ive come across this problem which is driving me nuts and i hope someone might of come across the same thing as im loosing ideas?? I have a client who has got some downlights in the basement with 8*gu10 low energy...
  8. J

    Grounding of Module Frames with transformerless inverters?

    Hi all, I heard somewhere that with the new transformerless inverters from SMA and others there is a need to ground all the modules and mounting structure. Can anyone shed any light on this? Thanks!
  9. 6

    pv module clearances from roof edge

    Anybody know the minimum clearance required between pv module & edge of roof. MCS say 600mm, building regs is grey, one report that it is 300mm, & another company that thinks its 400mm.
  10. S

    Module sizes and makes

    What size and make of modules are people generally using. using a 180w or a 230w makes a big difference to the total KWp. I'm pricing my first small job and i have space for 6 modules. I'm trying to get as high a KWp as possible for the available space. i've been looking at Schuco modules...
  11. kevyn

    4 module Proteus RCD......

    Does anyone have or know where I can get a 80A 30mA 4 Module 2 pole RCD? I desperatly need one as I have a customer getting on my case about it. any help appreciated
  12. T

    switch

    Hi everyone is it posible to buy a 2 gang white plastic switch with a dimmer and a normal light switch on, i need it on the landing for my dimmable downlights in the bathroom and for the landing light. Thanks.
  13. P

    **CHARITY AUCTION** Megger Multi-meter

    here we have a megger multi meter up for grabs from Napit brand new and all the proceeds will go to the pen charity`s http://cpc.farnell.com/jsp/level5/module.jsp?moduleId=cpc/428558.xml Auction will end next Thursday 19th August at 10pm
  14. B

    Compact 12 module Consumer Unit?

    Following on from my questions about DIN rail terminals, I've decided that the best approach would be to replace all of them and install a small Consumer Unit on the boat. At the same time I will move the main breaker off the DIN rail and into the CU. I need room for 8 modules in total, but to...
  15. M

    HNC Mechatronics engineering project/engineering design module

    Hi there Started year 2 on Wednesday and a big part of this year is the engineering design/project module where I have to come up with an engineering problem (ideally where I work) and overcome it. I need to do a 30min presentation in front of all the classes employers at the end of the year...
  16. T

    2391 v 2330 inspection and testing module

    is the 2391 inspection and testing qualification regarded the same as that of the inspection and testing module as part of the level 3 2330 certificate and if so is this as difficult as the 2391 exam ?

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