General Science / Re: Why is mains electricity 240v AC?« on: 25/09/2016 20:42:38 »
The MRI chiller motor was manufactured in Germany to the EU specification. As for manufacturing MRI in the UK, we haven't done so since 1985.
The UK was, of course, and still is, a member of the union that limited the consumption of domestic vacuum cleaners to 1600W, allegedly "to save energy". Fact is that the newest members of the Union have domestic mains limited to 7 amp sockets, so in order to give their manufacturers access to a genuine single market, the market had to be restricted to 7 A x 230V = 1610W. Politics, not physics, rules the EU.
The giveaway is the proposed limit on hairdryers, kettles and lawnmowers to - you guessed it, 1600W. The official reason is half honest: reduced power (not energy!) consumption and fewer imports into the EU. It's bloody obvious that when it comes to heating or evaporating water, the energy requirement has little or nothing to do with power consumption: indeed a low power kettle will require slightly more energy to heat through a given temperature range because the surface loss rate at any given temperature is the same.
"The MRI chiller motor was manufactured in Germany to the EU specification."
So, either it was built to run on 230V as in Germany, or it was built to the EU standard in which case it would have run properly on the bottom end of the EU range.
Or, it just wasn't up to the job- It's not clear how leaving the EU would stop German manufacturers making duff motors.
Could you expand on that for us?
This "As for manufacturing MRI in the UK, we haven't done so since 1985. "
only matters if the only business in the EU is the manufacture of MRI machines.
Whenn everyone has finished grumbling about power limits they don't really understand, we will be using less energy to vacuum our carpets (and saving money in the process)
It's a counterpoint to the daft state of affairs where cleaner manufacturers were playing the same silly "numbers game" that PC makers did with clock rates a decade or so back.
The energy used by a cleaner is the product of the power and the time taken. A 10KW vacuum cleaner doesn't mean you can walk round the room in a 20th of the time it takes to walk round with a 500W one
Meanwhile, on the morning of the Brexit the UK lost a lot of money- something like the value of the Greek economy.
Also, that morning, their main spokesman Mr Farrage, admitted that he had lied about the biggest factor they were able to put in favour of leaving (The lie about funding the NHS).
However I'm still waiting for an explanation of how us leaving the EU will improve the regulations (It seem that both you and I were involved in the rules- you implement them and I was involved in drafting them)
There's no way round the fact that UK manufacturing industry will still have to stick to the EU regs for much- probably most- of their market.
Now they won't have any representation on the drafting of those rules.
How is that better?
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