Sham pain
Boiler Supply Q
- Thread starter padstar
- Start date
Sure. but I only mentioned A-V equipment because you brought it (a TV) into the discussion when I injudiciously used the word "component" to refer to the component parts (e.g. pump, valves, stats etc.)of a CH system ! ....
Exactly, and that is obviously NOT what I meant when I used the word 'component'.
I don't think anyone is arguing that. If there are 0.5mm² wires connecting parts of the system, then they require appropriate protection.
Quite, but at least in the UK, over-current devices within an electrical installation are there solely to protect the cables of the fixed wiring of the installation, not things connected to it - and if equipment connected to the installation requires 'better' protection than is required to protect the cables of the fixed installation, that should be provided within the equipment.
As has been pointed out/asked, what do you think the situation is (e.g. in relation to a CH system) in most non-UK countries which do not have fused plugs or FCUs? Are boilers and other parts of CH systems in those countries manufactured (and connected together) differently, so as not involve 0.5mm² conductors?
Kind Regards, John
Ones I have seen have a Schuko plug plugged into a 16 amp circuit (in a bathroom).
Quite (although, as Sunray has pointed out, a 16A socket does not necessarily mean that the circuit has a 16A OPD) - so, as I asked, if it IS a "16A circuit", are such systems devoid of the 0.,5mm² conductors that concern Sunray (and/or are any such conductors appropriately protected within the equipment concerned)?
I can't speak for what conductors may exist within parts of a CH system (e.g. a boiler) but as far as 'connecting things together', I have probably personally avoided this issue by always using 1.5 mm², cables
As I have already pointed out anything outside of the UK has absolutely nothing whatsoever to do with this forum and I wish other menbers would stop bleating on about it.
However in my limited experience of working in foreign countries I've found circuits dedicated to an application are usually (but I'll stress my experience is limited) protected with a suitably sized OCPD. regardless of the method of final connexion.
Never knowingly seen a foreign boiler circuit protected with a 16A OCPD, however I have seen a number, and installed some, 16A sockets for boilers using lower rated OCPD. see #56
It's not quite as irrelevant as you suggest, given that this whole discussion arose because it was suggested that the requirements of MIs for boilers in the UK were such as they are because of a desire to ...
That's a valid point - but my eperience of non-UK electrical installations is so limited that I have no idea how correct it is.
Kind Regards, John
That's simple, I want to know when you stop your irrelevant bleating-on about other countries electric rules/regulations/systems which have absolutely no bearing on any points raised in this thread.
In my experience they usually fit a 3/4/5A fuse/MCB in their fusebox/CU for the dedicated circuit.
The point is that the physics is exactly the same so it can be deduced that if the UK does something no one else does then it probably is not necessary.
Do not forget that plug fuses and hence fuses in FCUs only came about because of the invention of the Uk ring final circuit.
I have one. It is just plugged in to the socket circuit.
Also my lights are on a 16A circuit (so I could add a socket and everyone would be happy).
Did that include lower (than 16A) rated cable being installed?
It's still irrelevant when discussing installations in UK
Is that relevant?
Thank you for the information
It was the first fixed cable, designed under the relevant regulations of the country, their round version of T&E, from memory I suspect 1.5mm². However I know not of their derating factors for buried direct.
No it isn't; not when discussing if things are electrically necessary.
Yes, without the ring you would not have them.
Ok.
A good point. Why would the derating factor be any different between UK and European masonry?
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
