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Put in a two, three or four way duct then the PV installer can pull through what they like and you have the option in the future to pull in other cables.

Said it would not be popular, but it is swapping out a 40watt or so SES to a 4 or maybe 5watt LED, its up to the individual, I would not recommend this in a customers premises, the only problem I have found is being an SES fitting it's recessed into the lamp holder, therefore the GU10 fitting is...

Wont be popular as its outside the manufacturers design, but these: https://www.toolstation.com/spare-lampholder/p93364? had exactly the same fitting distance, diameter and insulation to the old SES fittings I had, I am sure there is a solution to your conundrum, Oh yes I do not recommend doing...

Not sure I understand that, if its "not heating up at all" how can it blast out hot air? Does running the boost heat it up?

10% interest is worth having.

My thoughts exactly, with the increasing cost of electricity it can't be a negative, I am old enough that I wont see a return on my monies, but sitting in a bank/building society earning nothing does seem a waste.

But then again we know he is no longer involved, and asking for guidance is what Forums are for, we are just asking for a place to start, and he did offer.

@binky if I PM my address to you could you have a look at what options I have, the main roof of the house face's South, but I have options on a large shed roof that also face's South.

@binky I too would be very interested to know what you would put together?

As Andy said I was referring to RCBO's not having overload protection on the neutral. SBS ceased trading in 2024 Locked to prevent being hi-jacked (again)

Hi Dave, yes terminology is a problem, having been working in France for the last ten years on mostly three phase domestic, three phase RCD's are four pole, any single phase taken from the three phase supply is a true two pole device RCD or MCB's or even RCBO's if you can source them.

Thanks for the feedback Dave, tell me how do they get two sensing coils inside a single module RCBO? On the single module ones I have taken apart the sensing coil is too big to be accommodated on both the line and neutral in a single module, I have also found that two in and two out and no fly...

Entered my second childhood about ten years ago when I retired.

That is not an industrial single line circuit drawing, but a domestic three phase installation, three phase is common in rural France, the RCD/RCBO's are separately powered direct from the distribution block (see below) not through an RCD, regulations in France are only eight MCB's per RCD...

I have four new 3000 series Aico fire/Co detectors with Interlink for sale at the moment if anyone is interested please PM me.

I sent the motor spec and what I wanted to achieve to Invertek and they told me what too buy.

Good to know, but still need to take one to bits to see if it isolates by the required 3mm air gap on both L & N.

But does it isolate by the required 3mm gap? and if the fault is on the N side it will not trip at all.

Very clever to get a double pole RCBO into a single module, I'm still a bit sceptical, may have to buy one and take it too bits, looks from the diagram on the side of the unit that it only detects on the L side and the N side is dragged along with the L, the 1∆ is only connected to the L the N...

Its all very well saying you can't give a price for an EICR because of all the variables, but this would apply to all trades people in all trades, what is needed is a guide line on an EICR with caveats on additional work, this would allow the customer to have an idea if they are being ripped off...