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    PV immersion controller

    elios 4 u and power diverter can be configured in 10W increments from 10W, which is useful when paired with battery systems as when configured at 10W the 2 conflict and draw from the battery in 10W increments until the full 3kW is being pulled from the battery. Set it up at 100W and that doesn't...
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    Battery Battery Storage & Metered Export

    4.32 is utterly nuts, why would anyone attempt to defraud the FIT scheme by paying more to import the electricity than they'd get paid to export it? I'm pretty much certain that there is no import tariff available that's set lower than the export rate, so this is complete nonsense.
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    Mastervolt Earth Fault

    you should also check for faulty varistors with earth faults, as it will show up as an earth fault if there is a faulty varistor. That should hopefully be a simple part to swap out, but I don't know the mastervolt inverters.
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    Off Peak Charging through Hybrid Inverters

    can you show the workings for how the figures would stack up for charging on economy 7 to offset standard electricity rates? I've not seen anyone so far be able to actually make those figures work without excluding the actual usage costs of the battery (in terms of the lifecycles of the battery...
  5. G

    Looking for vents/grills for SMA Tripower

    wind and sun tend to be good for spares for sma
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    Nuisance RCD tripping advice please

    16 or 20A dual pole MCB is how we usually do it, though single pole will be fine if there's already an isolator for the circuit next to the consumer unit.
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    Does anyone know what is going on at Segen?

    Segen Wholesale Online is working fine for me
  8. G

    Replacement panels for a defunct manufacturer

    as I say, this could be something that MCS could do with issuing a technical briefing / statement on - they were the organisation that OFgem worked with to release guidelines for TIC definition, but until that point I'm going to go with the interpretation that if it doesn't actually result in...
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    Replacement panels for a defunct manufacturer

    Ultimately at this stage all that should matter is whether or not the change will have any significant impact on the overall annual generation figure. If the answer is no, then it shouldn't impact on the FIT side of things, nor need a new MCS cert as long as there's documentation to explain why...
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    Replacement panels for a defunct manufacturer

    The wording doesn't mention TIC, it mentions generating capacity, and on a string inverter adding the odd higher rated panel has bugger all impact on the generation capacity. I suspect ofgem have worded that deliberately to avoid using the term TIC or DNC precisely to avoid this sort of situation.
  11. G

    Replacement panels for a defunct manufacturer

    This ought to fall into this category, unfortunately some FIT suppliers may not actually understand how solar PV works and may view adding a single higher capacity panel to a string to be an increase in capacity, ignoring the basic fact that the string will output at the capacity of the lowest...
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    Replacement panels for a defunct manufacturer

    It won't have any positive impact on generation though (assuming it's a string inverter), so I don't see that this applies. It's effectively just a straight replacement of faulty kit, if the exact replacement isn't available then go with the closest match and give the customer a statement about...
  13. G

    Storage

    some are, but if done in addition to a 16A solar inverter to take the total above 16amps means they'd need to be G59 certified, which most aren't. I'd be inclined to argue that the actual plant is still designed not to export more than 16amps to the grid - ie the DNC of the plant is still...
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    EPC Requirements

    I've been doing some investigation into this and am waiting for further clarification from Ofgem, and STA have queried it with DECC. I think there's a workaround where the EPC for the new build could be produced prior to the PV being commissioned - ie if the PV is not connected up to the mains...
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    Battery Pv Battery Storage Retro Fit

    almost certain to have been a 3600TL which is dual tracking, SMA never made a 3680W single tracker to my knowledge.
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    Battery Pv Battery Storage Retro Fit

    not true. The DNO only needs to know if there is a new grid connected inverter, the inverter still can't output more than it previously did and would cut out in the event of grid failure (or working on the line) under the G83 protection settings, there is nothing for the DNO to be concerned...
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    Battery Pv Battery Storage Retro Fit

    does this return into the 2nd MPPT on the inverter? If so then it's installed correctly. Not sure why anyone is talking about DNO notification as nothing has changed, it's still only the SMA inverter connected to the grid, the growatt is connected through the inverter. erm, it's winter, PV...
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    Export payments no longer apply for extensions as well as no FIT payments

    no g59's, one was a small system (our original one on my parents was only 900Wp), another was a 3 phase supply but only 1 phase used before.
  19. G

    Export payments no longer apply for extensions as well as no FIT payments

    yes, I'd checked all of that out, a few weeks ago, as well as asking several FIT suppliers, pretty bad that it's taken until 3 weeks after the scheme restarted for this to come out. We're on the verge of installing 2-3 of these systems on the basis that they'd still get export payments.
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    Export payments no longer apply for extensions as well as no FIT payments

    I think it applies to any systems that would want to be paid the guaranteed export rate. Nothing to stop them negotiating to be paid separately, eg Good Energy do a different export payment arrangement for above 30kWp systems, but for smaller systems the metering costs would be prohibitive I think.

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