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  1. B

    Voltage Spikes....

    Voltage spikes cause drops in solar PV performance | YouGen Blog | YouGen, Renewable Energy Made Easy Interesting blog on this "phenomenon"....we came across it once after an install we did that included SolarEdge....the chap owned an electrical maintenance firm and had spotted it via the SE...
  2. P

    pv output

    HI What do people use to send data (automatically) to pvoutput please?
  3. B

    Dimmer Query

    Hey All, I installed two sets of 6 lights, each set controlled by a dimmer. When i bypassed the dimmers, i got 240v at the end of line lights. when the dimmers are connected, i got 208v at the end of line lights. The dimmer switches were on full, i dont know where im losing the 32v...
  4. Richard Burns

    Twin output bathroom downflow heater

    Does anyone know of a bathroom downflow fan heater than can be switched between two different heat settings whilst in use. The customer has asked for one but I feel that exposed switches are unlikely in a bathroom, however I have seen a review that said there was one available by pull cord...
  5. R

    DC output from a bridge rectifier.

    Been thinking about this. From standard UK 50Hz 230 Uo into a bridge rectifier the output would be 'b' on the drawing below? Thanks.
  6. M

    Ultima solar PV hybrid 3.84kW predicted 5333kWhpa output

    Hi, Has anyone come across the Ultima solar hybrid panels? I have just come across a quote stating that a 3.84kW system will likely have an annual output of 5,333kWh per annum. This seems a bit optimistic, but I am not familiar with the technology and wondered if anyone here is? cheers Matt
  7. V

    LED Lighting control

    Looking to install quite a lot of floodlights for a customer (direct replacement of SONPAKS), been looking at the LED floods which give a good output along with energy saving for the customer However i have been told by the manufacturer that you cannot use a photocell/retro fit photocell to...
  8. W

    Peak output

    One of those days today where the clouds go and you see a peak, But highest I have seen on mine 3.840kWp east/west system SB4000TL
  9. Mark.W

    Max output current of inverter

    Hi guys Can someone pls tell me if the max output current (iacmax) on an inverter data sheet is the max output current per inverter or per phase! Thanks Mark
  10. E

    power consumption and heat output question

    i've seen an electric fire advertised very cheaply in a local newspaper (dimplex SP920) and I need one for my living room as the gas fire has not been serviced and 5 years and I'd rather switch to electric as they don't need serviced, one thing that caught my eye is on the tech spec i found...
  11. B

    help please reduced output on hot days

    first of all hello to everyone. i need some advice on reduced inverter output on really sunny days. ive had my system for about 7 weeks, its a 3.0kw 12 a-sun 250w panels the inverter is a power one aurora 3.0 and the system is on 2 strings. my probelm is on mixed cloudy and sunny days the...
  12. C

    Sky box second output - i would like to know how to receive this on an av channel ?

    "Hello All", I would like to find out how to receive Sky from the Second Output on the Digibox via a Satellite Cable to the Aerial Socket on a Second TV - BUT I need to know How to `Tune` this to an AV Channel - NOT to an ATV / Analogue Channel. I know that this IS Possible as I have that...
  13. C

    SKY BOX SECOND OUTPUT - CONNECT TO TV`s WHEN THERE IS NO ANALOGUE TUNER [FUTURE] ?

    "Hello All", When I was reading various Posts about Freeview TV / Digital Switchover to try and find a reason why My Freeview Signals had become worse since the Digital Switchover I remember reading a comment from a very knowledgeable Member - mharries1 - to the effect that Connecting the Sky...
  14. T

    Contactor, Timer Circuit Design HELP!

    I have a question. Basically I have been asked to install electrical heaters in a large area and the customer wants them timed and on thermostatic controls. Which is fine you can just buy the plug in's right? Bloody hell their expensive! I haven't played with contactors and din rail timers...
  15. M

    Solar Panel Output cutting out

    Hi I had a solar panel system fitted 22 Feb 2012. The system includes a 15 panel sharp 245 array split into 2 strings of 9 and 6 running into a Sunny Boy 4000TL. They system seems to produce consistently until about midday then cut out for periods if there is a decent amount of sunlight. I...
  16. 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...
  17. D

    4000TL: no output

    I noticed yesterday that my SMA 4000TL spent 30 or so minutes producing 0 Watts. There are two arrays on the system and when I checked the inverter display it was showing one of them at 305V between the panels and the inverter and 245V between inverter and the grid. The red light was also on on...
  18. M

    Damage caused to VSD from insulation tester voltage

    Hi, Can any one advise me about the actual damage caused to a frequency drive if flashed with 500 vdc from an insulation tester? I have an ABB ACS800 0100 drive (100kw) that has been flashed by someone. The drive uses IGBT modules fired from a control card, will it be the IGBT modules that...
  19. L

    Questions about 16A output current of 4kw system

    Hi guys, Some of PV installators told me that they want 4KW inverters with the max out put of less than 16A/phase. But G83 defines that is the reuqirement to systems less than 3.7kw. For 4kw, the safty should be G59. Could anyone tell me why some installators hope to get 4KW under 16A...
  20. R

    adjustable multi output regulator

    i everyone, firstly, thanks for taking the time to read and hopefully help me out. im not an electrician but have some fair know how for small electrical projects, but i could use some majour help on this project i have going. basically im looking to take 1x 12v NiMh rechargable battery and...

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