Bog standard incandescent - 3 * 3 * 60W reflectors - the room is about 18 foot by 7 foot, switched in a bank of 3, and a bank of 6 - if you knock the bank of 6 on first of a night it can take several seconds before your eyes recover, and it sure as hell wakes you up :-p
no clear idea of the size weight and price. Ditto the other one but I couldn't get on with the way the pictures loaded.
I'd never heard of the stirling engine and am having difficulty with the concept. They seem to be shooting themselves with the overbuild quality as a fuel efficient small unit that wears out rapidly would sell if it was cheap enough to supply a site. It could be without the heat saving ad ons.
Of course the firms shown were designing a unit for specific purposes not including what I would buy one for. If I was in the market for a genny.
I wonder why they can't incorporate an oil way in the crancks and etc the way that motorcycle 2 strokes do.
We have 3 phase already in our chapel - being converted to house and workshop. I am keeping it as I am a woodworker and have some 3 phase machines - and future machines bought will be much cheaper if 3 phase, second hand that is, not much difference in new prices. Also, having a large workshop I could for instance accomodate a potter with a large kiln which would definitely need 3 phase. Except for these considerations 3 phase is unecessary and no normal domestic set-up is ever likely to exceed 100amps. However the problem remains - what considerations are there with respect to re-wiring in 3 phase. I'm ok with single phase wiring and I know about spreading the load between phases but are there any particular problems or no-nos, or good sources of info?
cheers
Jacob
Whispergen is available, so see a dealer.
The Microgen is available next Spring.
Stirling's do not wear out rapidly. They are super simple with minimum components. The Microgen unit doesn't have a crank, with the piston being the only moving part.
Why? It works on a different concept and operation to an IC engine. Get al the stuff out your head about IC engines.
I bet ya' it would wake you up. :-)) Is the room used as a craft workshop ? With that amount of illumination, I bet you can see the tinniest details.
No, it`s just a standard domestic kitchen - although if my wife was replying to this, she`d comment about needing it that bright to see through the plumes of smoke when I cook :-}
LOL
Ah well ! If it's acting as emergency lighting, then it is better to have it as bright as possible. :-))
Thanks, Stefek, this was most helpful.
I went round the house and switched various loads on and off. I measured the "with load" and "without load" current through the live incomer using a Fluke clamp meter. I recorded the following readings (difference between "with" and "without"):
Tumble dryer = 11.9A average, 16.0A peak Dishwasher = 13.6A for at least 10 mins Electric cooker (two ovens on full, no rings on) = 18.7A Electric cooker (four rings on full, no ovens on) = 25.3A Microwave oven (Cat D) = 7.0A Electric kettle = 9.2A Toaster (two slice) = 3.1A Hair Dryer = 7.3A All lights on (40 bulbs) = 11.6A Electric fan heater on full = 11.6A Washing machine = [still to test]
The point of my original post was not how expensive or inefficient it would be to use all the above at the same time. It is that, worst case, you could conceivably consume near the 100A single phase limit with standard appliances.
Yes, but you really do need to try and grasp the principle of diversity. If you switch every single appliance in your house on the same time, it is very likely that you would exceed the maximum design ratings of the supply equipment or the installation. But, and it's a very big but, that load *will* fall off as thermostats start to operate. Electrical cables and mains fuses are more than capable of withstanding overloads (as distinct from faults) for short periods of time, although the installation fuses or mcb's may operate.
It might surprise you to learn that the after-diversity maximum demand per dwelling on a non-electric heating estate of say 50 houses for design purposes could be a low as 1.5 to 2kva per dwelling, although each dwelling could have some 15 to 20kva of load installed! The mains distribution equipment installed will have a notional maximum load of 75 to 100 kva, not 750 to 1,000kva.
OK. After some reflection, I'll stay with a single phase supply.
Thanks to all posters.
You're welcome; and thanks in turn for not taking umbrage at the relatively robust terms in which your knowledge was supplemented ;-)
In message , Pandora writes
Good idea
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