Yes, I understand that. The point which I keep making is that it is difficult (sometimes impossible) for customers to comply with the (seemingly 'unwritten') apparent 'requirements' of T&Cs as regards contacting the DNO if they propose to add loads unless they have some guidance as to what those requirements actually are!
That's true but why fit supplies with higher than allowed capacity.
I think the analogy would only fit if everyone were issued with a Ferrari whether it was wanted or not.
The problem is all to do with probabilistic concepts such as diversity and load-sharing/spreading etc., isn't it? What matters to the DNO, network-wise, is the average demand per installation (which equates to the total demand for N installations). I don't think even the DNOs would suggest that anything about their rules prevents a customer using, say 80A, at a single point in time, provided that their average demand over some period of time is below their ('unstated') limit. However, they design their networks on the basis of their estimate of 'average demand per installation', and if the amount of installed fixed equipment suggests that a particular installation is likely to have an average above that figure, it can throw things out for them.
In terms of the supply situation, that would be true - but I was talking about expecting people to comply with a rule/regulation/law without telling them what it was! The speed limit people could easily invoke a simiar "it depends, so we can't give a fixed figure" argument (since the safe speed would depend on road/weather conditions, time of day etc.) as do the DNOs (well, westie!). So they could erect signs which said 'Speed Limit', and then prosecute someone for travelling at, say 48mph, because they had (unbeknown to the driver) deemed that, in the particular circumstances, the speed limit was 43mph!
Can I have mine with Claudia Schiffer naked on the passenger seat please.
Amidst some of the potentially confusing discussion above, I personally don't think there is any doubt that your electricity supplier would expect/require you to seek their permission to install 2 x 9.6kW new loads.
If you turn the temperature down then maybe it will not be taking its full rated power.
I can't be certain, but I frankly would doubt it (at sensible flow rates, that is).
I think that'sone of the reasons why families with more than one teenager (or older equivalent!) often go for electric showers
Also,it would have to be a pretty small tank to heat up in 45 mins with a 3kW immersion.Might be worth point out at this pointing out that I have an inspection cert for my house which states the main supply (or whatever the field is) as 100A, which the cuttout housing and main switch etc are, however the cutout fuse is labeled at 60amp. All by it with a slightly curling label.
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