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    Electricity board responsibility for noisy supply?

    Thanks, I think the gas guy or insurer is the best route.
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    Electricity board responsibility for noisy supply?

    At my son’s house a gas contractor damaged his incoming mains cable during pipe laying in the road ouside his boundary. It was only slight damage and for 2-3 weeks just sparked/leaked away underground causing surges and spikes on his mains whose cause was unknown to my son. They noticed some...
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    Solar Thermal or PV with EMMA?

    There is a lot more about this sort of idea on this thread. http://www.electriciansforums.net/central-heating-systems/23969-immersion-heater-pv-electricity-26.html I have a similar system I designed using much less expensive components.
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    Immersion Heater - PV electricity

    Sacreblue! I can sell you one for under half that or as a kit for even less, but fine if you prefer the challenge of designing your own. Mine do work, as stated by early adopters such as:- From a retired CEO of a housing authority:- After some fine tuning the I2 worked well. I can tell...
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    Immersion Heater - PV electricity

    Sorry, have now deleted some.
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    Immersion Heater - PV electricity

    No, cagey because I have some unique design features not used by anyone else so protecting my IP.
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    Immersion Heater - PV electricity

    Far as I can tell they are promising a new range called Cascade in Sept but it is for large installations so not addresing the cost issue for you and I. My unit is less than hundreds. The SMA kit will only switch loads on an off so does not do close load matching.
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    Immersion Heater - PV electricity

    All my sales income apart from the component cost and postage goes to charity so it’s not for personal gain. I am thinking of switching to kits from now on. I commend those who want to pursue the open source route but beware your own safety.
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    Immersion Heater - PV electricity

    If that last post was pointed at me then I previously answered you by PM so you can’t say you got no response. As a bit of an aside I question the legal framework we have in UK. If someone has designed something they can get that design to other people in several ways:- Put it in full on...
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    Immersion Heater - PV electricity

    I am shipping some units to customers next week and am hoping they will be able to give an unbiased view here of the unit’s performance. That will I hope partially make up for my reluctance to publish the design here. Full marks though to Paul for his excellent and clear posting of his design...
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    Immersion Heater - PV electricity

  12. E

    Immersion Heater - PV electricity

    Have you established that all electricity meters can cope with this half wave rectification? For the positive half cycle you will be importing from grid and exporting for the negative half cycle, or vice versa. As long as the meter successfully averages out the power over a few cycles this is OK...
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    Immersion Heater - PV electricity

    Mine does that and also has an override to turn the immersion on if you want a top up on a sunless day. Some LEDs or an LCD are useful or else you don't know if the unit is working properly. Looks like we have at least 3 viable solutions here. My one achieves the same aim as the others but...
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    Immersion Heater - PV electricity

    I checked with OWL some weeks ago. It’s for 3 phase, but it just adds the 3 powers together and displays one figure so you can’t use it to display 2 or 3 different things like PV generation and export. Plus it has no idea of the direction of the current so an import and export read the same. The...
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    Immersion Heater - PV electricity

    The device I have designed and am now selling does all this. Send me a private message if interested.
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    Immersion Heater - PV electricity

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    Immersion Heater - PV electricity

    Does not solve the need to measure consumed power too if controlling the immersion.
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    Immersion Heater - PV electricity

    Yes I believe some have these clutches. After a slight backwards movement (fraction of a turn) my clutch engages. It’s a question of the left hand not knowing what the right hand is doing. One part of EON pays my FIT payments. But the supply side does not seem to been told that I have PV. Or...
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    Immersion Heater - PV electricity

    I have a rotary meter of perhaps 10 year old vintage. It does not go backwards or only does so extremely slightly. But when an electricity board electrician came around to look at something else he was most insistent I tell the board that I have PV and get the meter changed. I have not bothered...
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    Immersion Heater - PV electricity

    For some time, since before coming across this thread, I have been designing an immersion controller for my 4kW PV system. I now have it finished and have built a few for family and friends. Seeing as the professional firms have not come up with a sensible product that is affordable please send...

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