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Thanks both. @JohnD - I am indeed on an overhead supply and they have said I will need to provide the earth. As a matter of interest can I put the earth in the ground inside the house? Thanks D

Electric board were at my house just before Xmas and discovered I dont have an incoming earth to the property. For now they have fitted a temporary RCD but I obviously need to get an earth fitted. Is this something I could tackle myself or does it need a qualified spark? Obviously it would be...

Thanks John. It is wet due to the run off from the land behind. I have improved it with a land drain but it is still very soft and boggy. My thought were to dig out maybe 300mm and then do 2 layers of compacted brick / stone and then 100mm gravel. Hopefully this would also act as a bit of a...

Morning all. I tried searching the forum for an answer to this one but had no luck. I want to put a fairly large hammer head drive in next to my house;it will ultimately lead up to a new garage. It will most likely be a gravel drive and due to the levels involved it will be on a shallow(ish)...

Hi Ken Thanks for the reply. I have Googled a number of suppliers and come up with the likes of the PCA that do training courses and SovChem who supply the materials and give the training. The bit I cant get my head fully around is that unless there is some supplier accreditation there cant be...

Hi all, Could anyone point me in the right direction for how my brother can get accredited to install damp course systems with insurance backed guarantees please? He is already a plasterer and many years ago we both worked with a guy who did this for a living. I am just looking at how I can...

Sorry....one more question. The cylinder I have in is both an immersion heater and an indirect cylinder linked to the CH (I think). Could I leave this in, disconnect the immersion side and stick a separate cylinder in as well? If so could these then be connected to a single outlet supply and...

So I need a vented immersion heater cylinder, similar to what I have now but bigger. As an example:- http://www.ebay.co.uk/itm/HOT-WATER-TANK-COPPER-CYLINDER-290L-Capacity-1800x500mm-VENTED-FOAM-LAGGED-/282246738166?hash=item41b73770f6:g:5ZQAAOSwARZXmeqA D

Rob, if I raise the tank as high as I can and as you say increase the into and out of a larger cylinder would a pump then help me to increase the pressure? Would I pump from the hot side or the cold side? Would this sort of thing do:-...

I assume a greater water volume and lifting the height of the tank would make a difference? I think I could probably get the tank up by 2m if I used a coffin style tank. Could I pump off this tank to improve the shower? Could I replace the hot water tank with the same type (i.e. normal...

I have posted before about issues we have at this house with low water pressure. Cut a long story short rather than using a break tank (which I was considering) we will be connecting to a supply 450m away but its going to be some time before this can happen. In the meantime if I put a large...

My programming skills are pretty good, it's been a while but I work in the software industry and started my career as a technical consultant. I prefer higher level OO languages and the likes of the Arduino, ESP8266 work well with this. Don't think I fancy low level assembler though!! My...

Yes, the board has a transistor and a diode across the relay. Thanks D

The PCB has optocouplers for isolation so this should be OK. I went around the houses a bit but I think I can actually use the standard 5v relays rated at 230v/10A. D

That is the post I am referring to. Specifically the bits below but having re-read I think he is just saying just make sure that the circuitry is protected from back EMF of the relays regardless of what they are. Don't drive direct from 5 volt logic. Use the 5 volt logic to drive buffer chips...

I edited my post to show the link I had seen - Have I misunderstood the post on this thread? EDIT - it was a post by bernardgreen about 8 posts down on the thread above.

I understood from a post on here somewhere that using the 5v relays could suffer from EMF issues and 12v relays were therefore recommended. If this isn't an issue it would be pretty simple as the 5v relays can switch 230v / 10A. EDIT - see this post:-...

Thanks. The 5v relays are on a separate PCB joined to the outputs of the microcontroller. There are also optically isolated 12v relays that can be directly driven by the 5v logic level outputs of the microcontroller but I think I prefer having DIN mounted relays instead. I can then mount the...

Thanks for the replies so far. I can do whatever is needed from the 5v logic level output so driving a transistor isn't a problem - I have only been using the 5v relays for prototyping. I had got it into my head (incorrectly by the looks of it) that one approach would be to use the 5v relay to...

Thanks John. In terms of using 5v relays to switch a 12v supply to the DIN mounted relay, how would this work in practice? The bit I cant get my head around is what exactly goes between the 5v output of the PCB relay and the 12v input on the DIN mounted relay?? My question regarding the...