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  1. P

    Solar offsetting and realistic cost 400kW

    We have a potential client who might be using around 300 MWh per year and someone has mooted the idea of installing solar panels to carbon-offset that (part or whole). From a quick web-calculation for our area it looks like something of the order of 350-400kW installed capacity would be needed...
  2. K

    voltage reading on the output AND input of the solar panel battery controller?

    any idea why do I get the same voltage reading on the output AND input of the solar panel battery controller?
  3. PavelN

    How did you approach your rooftop solar renovation? Curious to know the details

    Hey everyone, I am a newbie in the subj and am curious: How did you study possible options? What you took into account when choosing your supplier and contractor? Or you totally relied on your contractor's choice of materials? I would much appreciate having short calls with you on that...
  4. RowanLennox

    Electrician Jobs Solar PV Technical Manager

    Are you a qualified electrician with experience of solar installation interested in developing your management experience and looking for a new challenge? Do you want to play a critical role in building the UK’s next market leader in residential solar? Does the idea of helping to tackle the...
  5. S

    Solar Panels Can I add solar panels to an existing system without losing my fits

    Can I add solar panels to an existing system without jeopardising my feed in tariff? I have a 3.8kw system but was thinking of adding a few more. Could I have 6kw of solar but limit the inverter to 3.8kw so it will help in the winter when I need it the most. Or would I need a second meter to...
  6. S

    Solar 3 phase kva limit

    My client wants to install a 100kw solar system. He has 3 phase and 100 amp fuse installed on 200kva transformer. Is 69kw the limit on 100 amp fuse or can he go over without a limiter fitted? Thanks
  7. O

    Lessons learnt on pod point car chargers and solar

    We just had a callback from a PV/Battery job because the car charger was working for 30s then turning red and stopping charging. We had disconnected it for a week, but it was reconnected and had power, maybe it needed resetting somehow. No the thing had somehow detected there was solar power...
  8. S

    Hi all, How to automatically switch my pool pump on when I have excess solar energy.

  9. L

    Requirements for a Homemade Solar Powered Esky/Mini fridge?

    Hello all, I am a Design and Technology student completing my final project of a portable solar-powered esky/mini fridge cooling system, however, as I am somewhat new to electrical engineering I would greatly appreciate input into the construction of this project. For this construction, I have...
  10. J

    Main panel upgrade for Solar ?

    Hello, I am a homeowner and have a solar project coming up. I intend to install a 9kw solar system but I am not sure if I have to upgrade my main panel or not. I have a 200A main panel with only 3 breaker slots, 1 is 100A double pole breaker feeding the sub panel located inside the home, the...
  11. D

    AC Service Panel Max Solar Backfeed

    Hi, I plan to add solar to my home and have a question about how many amps I can backfeed into my AC service panel using Net Metering. I know NEC 705.12 (D) (3) limits this to 120% of the service panel busbar capacity minus the main circuit breaker rating. I have an old GE panel from the ‘70s...
  12. newfutile

    Solar trips rcbo c16

    There are 2 inverters feeding into a dorman smith C16 rcbo , every time I visit this site (communal area power) it has tripped. it switches on first time and never trips when im on site (though there is cloud cover today). all the correct DC and AC isolators are present the inverters are a...
  13. P

    UK Solar SWA cable run 10mm or 16mm

    Morning, I was just looking for some advice on what other sparks would do for the following scenario:- A detached Garage is going to house a 7.4kw Solar Array and around 12kw of battery storage. The supply needs to return back to the main house (cable run approx. 22m) to DNO/consumer location...
  14. Highspark24/7

    Ecodan with battery and solar

    Hi all doing a high end new build and client has solar and battery storage going in (done by others for mcs grant ) I was talking to plumber about diverting any excess power to a second heating element on tank or thought the ftc controls is this possible
  15. R

    New solar installation - cable sizing and no cables for battery installation...

    So, I already have solar (an older FITS installation) and it's been particularly successful so I want to extend this. I'd like to do two things at this point. 1) Add more panels in a couple of locations. 2) Add battery storage to provide some backup (power regularly drops for us) but mainly to...
  16. G

    How much solar power generated today?

    Hello Our 4kW solar system generated 4.4kWh today (Sunday 13/03/23) compared with our neighbour’s 6.4kW system which generated 19kWh. Clearly, even taking into account the systems’ size difference, our neighbour’s system appears to have massively outperformed ours. Both systems face, more or...
  17. J

    ADVICE ON TT OR TN-S FOR OUTSIDE SOLAR CABINET

    Please see attached diagram, can someone advise on if this TT connection is correct for an outside solar metal enclosure as shown in the diagram? If not what are your recommendations on how you would do this please?
  18. W

    3 Phase Domestic Solar Installation

    Help please, this is my first post on this subject regarding solar panel / battery installation into house with 3 phase supply. I am a DIY level person and am seeking advice to allow me to understand what to expect when engaging with installers. I have a 3 phase domestic supply. See image...
  19. D

    Hager High integrity board + RCBO’s + solar install.

    Hi, I have a dual RCD board made by Hager installed a couple of months ago. It is high integrity, which I understand to mean RCBO’s can be fitted as well. (I got an EICR and let’s just say it was awful. The electrician who did the EICR even wrote a report for me but that’s another story)...
  20. E

    3ph solar inverter fault code - bus voltage unbalanced

    So my friend's inverter is not working and fault code says - bus voltage unbalanced. Has anyone come across with something like that? Inverter is 10 years old and install company doesn't exist anymore.

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