Not particularly for each appliance but would depend on the situation, normally a dedicated 32A circuit for them.
Outbuilding power
- Thread starter Deanthemanc
- Start date
Quite - that makes total sense. However, eric appeared to be suggesting that there was an alleged regulation (which I'm sure doesn't exist, not even as guidance) requiring that any appliance over 2kW should have its own dedicated radial circuit - which I seriously doubt that (m)any of us in the UK would do (even though it is probably fairly standard in mainland Europe, the land of the non-fused plugs
).Kind Regards, John
I am sure there is a recommendation regarding appliances over 2kW requiring to be powered via a FCU, would have to finger through the book to find it though.
That doesn't make any sense.
Eh?! They wouldn't have to be all that much (50%) above 2kW before they could not be supplied via a 13A FCU! Above 3kW, they obviously have to be hard-wired to an appropriate circuit.
Kind Regards, John
I'm not sure about the kettle/toaster load.
Why would you leave your tea to go cold for 10 minutes before you made your toast?
Assuming that all the unlabelled y-axes are in Amps, they've obviously assumed a supply voltage of 250V.
Kind Regards, John
Edit: typo corrected ('x' changed to 'y')
So what does the graph show ?
That in the unlikely event that you have all those appliances on at the same time, its still satisfactory to have them on a 32a circuit.
PBoD when you talk of a 32a radial, were you thinking of a utility room?
That in the unlikely event that you have all those appliances on at the same time, its still satisfactory to have them on a 32a circuit.
PBoD when you talk of a 32a radial, were you thinking of a utility room?
Presumably - on the basis that the total current demand would, at worse, only exceed 32A for the very brief period during which the kettle and/or toaster were being used. Indeed, forgetting the kettle/toaster, it also shows that the maximum duration of a current >20A would be 30 minutes.
If, as I think PBoD was, one is talking about a dedicated circuit for the three 'big' appliances, then it is obviously 'dedicated' that matters - whether it is a ring of radial circuit does not really matter (I have a 32A ring in my utility room).
If one wanted to 'minimise' currents in all circuits, in practice it might make sense to have one of the big appliances on the ordinary kitchen circuit (ring or radial) and the others on a dedicated 'utility' circuit. That actually 'happens' (by accident/convenience) in my house, simply because the DW is in the kitchen itself, whilst the other machines are in a utility room which has its own circuit.
Kind Regards, John
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