Recent content by ant101

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    Ohms law in theory and practice

    Think Im getting there. No doubt youll here more from me soon. Thanks for your time.
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    Ohms law in theory and practice

    Thanks for that, that was a good analogy. Is it possible to still get as much of a shock then? I ve heard people say that you cant get a shock off a neutral wire once the electons have passed through saya bulb. Maybe AC is totally different.
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    Ohms law in theory and practice

    Thanks everyone for taking the time to reply. I got more info from here and in a lot less time than I did trying to google it. You have all pointed me in the right directon and I will read more when I have the time, but am really satisfied now. I have more questons though. I am curious about...
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    Ohms law in theory and practice

    Hi to all, I understand Ohms law in theory, I=V/R. I have tested a fan I have salvaged from an old boiler using some flex, with a 3 amp fuse fitted into the plug (same rating fuse would be in boiler). All is fine and fan works. 240V is going to the fan and the fan has a resistance of 40...
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    Staining pine door

    Hi, I have a four panel pine door From a salvage yard which has been dipped, and I would like to stain it a slightly darker colour. Not sure what to do as I've been given lots of different advice. Do I need to seal it before I do anything else? If so what with? I would like a matt finish. What...
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    Cast iron radiator

    Hi, I have a very heavy cast iron radiator I wish to restore. I would like to know the process in which to do this. I have been advised against powder coating because there is a chance the seals can break?? I know a good way to remove the old paint is by sand blasting, but is there other ways I...
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    Voltage across flow switch

    thanks for your reply, would there be a voltage going from the pcb to the flow switch before the pump runs, or only once the pump starts. Trying to understand the process from pcb through switch etc. Multimeter I'm using is old and maybe not recognising mv. Sorry to confuse things. Any help...
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    Voltage across flow switch

    Hi could anybody tell me the voltage Reading across both flow switches on an alpha 240 E. I suspect it is low. Thanks in advance.
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    3 port V4037A mid position honeywell valve

    Hi Is this a fault ? white and orange wire from valve still show 240 v when CH is satisfied or turned off. The only way to stop this is to turn off at the mains or turn HW on. I ve got a brief idea what is happening inside the valve but cannot grasp where the 240v is coming from. All I...
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    gas pipe sizing for boiler installation

    I understand the theory behind sizing gas pipes and I have applied this to a real situation. Without going into it too deep I have calculated that i need to start with 28 mm pipe from the meter and then drop down to 22mm all the way to the boiler.I am only installing the pipework. The...
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    megaflow systemfit

    Hi I was reading about the Megaflow system fit. This cylinder comes with everythig pre assembled, valves, pump etc. It says a system boiler would not be suitable for this because it already has a built in pump. What boiler would be suitable? Maybe a conventional boiler ? Can you get a...
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    combi to heat unvented cylinder

    Hi Could I use a combi to heat an unvented cylinder to supply hot water to a 230 litre jacuzzi. If I need a recovery time of 30 mins would this depend on the boiler capacity or the cylinder? What size boiler (combi or not)and cylinder would I need? Not bothered about the instant hot water...
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    Hot water OFF in Y plan

    Hi, What is the purpose of the 'hot water OFF' terminal in a programmer on a Y plan. I notice it goes from cyl stat 2 through the grey wire to the 3 port mid pos valve. What is its function. I have also read that when heating and HW are both off the valve motor is de-energised and the valve...
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    learning websites

    Hi, Does anybody know any websites that explain CH systems,eg S plans, Y plans, inner workings of 2 and 3 port valves etc, and maybe diagrams etc. Thanks student.
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    neutral wire in roomstat

    Thanks for your answers everybody, Sorry my reply is late, Very helpful Thanks
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