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    Taking additional PV over 10kw?

    TSK, Ted's link explains it all. Just read the section on changes to installations on page 59. The recollection you have of the whole installation changing tariff only applied to early installations (2010/11 in rough terms) where an extension was added within one year of commissioning. There...
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    Low RISO problem

    The inverter is a PVI-3.6-OUTD-UK what I think of as the bog standard power one offering at the time. It was made Wk43/11 with firmware C.0.2.2
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    Low RISO problem

    A rolling, derivable, time sensitive password to get into the service menu seems a bit over the top but I went to the site this morning and the password got me into the menu. However, I was expecting a host of variables to be available like the SMA inverters, but there were only 3: - Nominal...
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    Low RISO problem

    Using the model type, serial no, and wwyy digits, the site generated a 6 digit password valid for 2 weeks. I'll hang on for any guidance on which parameter might do it rather than rushing to delve into the service menu!
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    Low RISO problem

    Thanks Andy. The ABB site was so slow on Friday pm that I kept thinking that either my browser had crashed or their site had. I repeated myself a few times and now have two registrations active! It seems I need the inverter type and serial number which I have. But I also need the WW/YY it was...
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    Low RISO problem

    Power One low RISO problems have been discussed here before. I have one on an installation from Dec 11 where the issue now manifests itself after lots of rain on one string of a 2 string/mppt 4 kW array. I am fairly sure it is one MC4 connector, probably one connecting one core of an SWA cable...
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    Consumer Contracts (Information, Cancellation and Additional Charges) Regulations

    The Napit first mention was in their newsletter on Wednesday. But effectively all it does is give you links to the legislation and guidance.
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    DNO application to connect for heat pumps

    EN 61000-3-2 and EN 61000-3-3 can only apply to equipment below 16A per phase. So for instance a Kensa single phase 16 kW twin compressor heat pump operates with a running current well above 16 A. Therefore EN 61000-3-11 and EN 61000-3-12 apply to it and all the detail is required. That's how...
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    DNO application to connect for heat pumps

    You are probably aware of these Forms A, B and C on the MCS site: Microgeneration Certification Scheme - Heat Pumps which we have to complete prior to connecting a heat pump. I want to put the application in early on one of my jobs because it is a largish heat pump and in a village and I want...
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    Consumer Contracts (Information, Cancellation and Additional Charges) Regulations

    Napit have said this morning there will be articles in the next newsletter and magazine.
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    Consumer Contracts (Information, Cancellation and Additional Charges) Regulations

    Just received NICEIC May e-newsletter and there is nothing in that on the subject, so looks like they missed it as well.
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    Solar iBoost Problem

    Strictly you do need need one on the router, but as most routers nowadays come with RJ11 connectors then the adsl output of a microfilter provides the physical conversion from a bt socket. Not only does the microfilter prevent adsl interference being heard on the telephone line, but it also...
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    Consumer Contracts (Information, Cancellation and Additional Charges) Regulations

    It really does make you wonder what is the point of these organisations. How is the average elctrician, plumber, heating technician or mcs installer meant to have picked up on the change?
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    Consumer Contracts (Information, Cancellation and Additional Charges) Regulations

    No, this one had passed me by. I normally expect Napit to pick up on this sort of thing as it applies to the work of all their members.
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    Minimum ground needed for Ground Source Heat to work?

    Like Worcester, I charge to do a full heat loss calculation and sizing calculations - there is simply too much detailed and tricky work not to. I appreciate that does make it difficult for potential customers to amass a number of 'free' quotes to compare. But for people close geographically I...
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    Minimum ground needed for Ground Source Heat to work?

    Reynolds number is simply a dimensionless variable which is used when modelling fluid flows. If you plough through the MCS references Worcester has cited, you will find it stated that if you keep the Reynolds number of the 'brine' flowing through the collector loop above 2500 then you will be...
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    Solar iBoost Problem

    Interference with the broadband is either being caused by the wireless link or by the high frequency harmonics caused by the iBoost switching. You could eliminate the former by trying a temporary wired link from the sensor. But I think it is more likely the latter. Two ideas to improve it: -...
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    RECC Member-wide Survey

    Thread drift, but on the subject of nepotism i did wonder whether if by chance the new(ish) chief executive of Napit, Mike Andrews, is related to the old one, John Andrews.
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    sma sb1700 over voltage ac? Help pleaseeeee

    The optimiser instructions I have read specifically warn against it. What model are you using?
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    solar pv electric shock

    Indeed Brazilian man dies after cow falls through his roof on top of him - Telegraph

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