Amps

[JohnW2]

How does all this help the guy with his question? ... It is rather simple if a 13A fuse is used and then more than 13A is drawn over an extended time the fuse will blow and so fail safe. ... Keep it simple 3kW = 3000W = 13A there is no need to argue to if 2800W or 3100W it does not really matter with a 13A fuse.

I agree totally. The OP was almost a non-question. The answer was that, with a 13A fuse, the OP should limit the total load to 13A, so all he needed was assistance in converting this into what it means in terms of watts or kW. As you say, for practical purposes, the simple rule-of-thumb answer is 'about 3000W total load'.

Kind Regards, John

 

[Grizzly]

And our nominal voltage is 230V, not 240V.

Sorry, don't agree. That is what the eurocrats and a**e sitters quote, but it is not what happens in practice.

I think you might benefit from acquainting yourself with the definition of the word 'nominal'.

Hint: It doesn't mean either 'average' or 'normal'.

 

[JohnW2]

I have another experiment for you. Fill your kettle, switch it on, and before the water is too hot to injure you put your hand in and touch the element, then report back your findings.

You're probably right. It's ironic that I only got into these discussions about the element remaining close to the water temperature because others started using a similar argument to 'dilute' what I'd said about element resistance varying with temperature. Had we been talking about, say, lamps, none of this would have arisen!

Kind Regards, John

 

[JohnW2]

I think you might benefit from acquainting yourself with the definition of the word 'nominal'.

Indeed. This one (the first hit I got on Google) is quite pertinent to the present context:

3 (of a quantity or dimension) stated or expressed but not necessarily corresponding exactly to the real value:
EU legislation allowed variation around the nominal weight (that printed on each packet)

Kind Regards, John

 

[riveralt]

'Harmonisation' was, AFAICS, a purely paper exercise which created a permitted range of 'acceptable voltages' which encompassed all the voltages which were actually being used in Europe. As I said, I'm not really sure what it is meant to have achieved, except in the minds of bureaucrats! Maybe some of them were naive enough to believe that the various Member States would gradually change their actual supply voltages to 230V!!

I understood it was to help (encourage/force ) the manufacturers of electrical products to produce a standard appliance that could be used across the European Union. Pity about the different plugs though!

 

[JohnW2]

I understood it was to help (encourage/force ) the manufacturers of electrical products to produce a standard appliance that could be used across the European Union. Pity about the different plugs though!

That sounds credible, and a laudable enough aim, but I'm not sure all that likely to have the intended effect. Indeed, ISTR that many things have been 'rated' at something like "220V-250V" since 'the year dot', so maybe that standardisation more-or-less existed prior to this initiative!

Kind Regards, John