On Thursday, 6 August 2020 16:05:14 UTC+1, Ricketty C wrote:
UK. Power sockets are always 13A square pin 3 pin polarised with a fuse in the plug. (There is another type that\'s seldom seen.) Small to medium houses have long typically had all these sockets on 2 ring circuits, but larger places have more & medium houses often get 3 or 4 socket circuits now. We do socket circuits differently to most of the world.On Thursday, August 6, 2020 at 6:11:40 AM UTC-4, Tabby wrote:
On Thursday, 6 August 2020 04:53:03 UTC+1, Ricketty C wrote:
On Wednesday, August 5, 2020 at 9:08:08 PM UTC-4, Tabby wrote:
On Wednesday, 5 August 2020 18:29:10 UTC+1, Ricketty C wrote:
Yeah, that\'s a very simple trouble free approach... really??? What\'s wrong with instant on? In the households in the EU the house current provides for more power availability in a standard circuit, over 2 kW vs about 1.4 kW here. That\'s plenty for instant on.
240v 32A is 7.7kW.
I was thinking more of the 9 amp circuits that I believe are common in the UK. We tend to have 15 amp 120 volts in the US, sometimes 20 amps in certain uses. 20 amps at 120 volts is practically the same as 9 amps, 240 volts and is a fair amount of water heating. It may not be enough for a shower though. I did some not so quick calculations that show 9 amp, 240 volts will raise about a third of a gallon by 25 Â°F each minute. The average shower uses around 2 gal a minute, so more power is needed, around 6 times as much or more like 60 amps at 240 volts!
But then who cares if they need to wait 30 seconds to get hot water for the shower? When having forgotten to turn the hot water heater back on the other day, I found the water in the tank is sufficiently hot to take a shower in just a few minutes, less than 10. I\'m curious as to just how much the water heater is actually on when no water is drawn.
My utility provides hour by hour usage data and I see intermittent spikes in my usage that are likely the water heater. There is some granularity in the kWhr reading but it looks like 0.4 kWHr each 5 hours for around 80 watts consumption not counting hot water drawn.
I\'m glad I did this calculation. Installing a timer on the hot water heater will save me around $40 a year on my TOU bill. Marginally worth it since it\'s not something I can just buy and install without either spending a bunch of money (240 volt stuff tends to be commercial $$$) or having to rig up a relay to control the 240 from a 120 volt device. Not going to worry with that just now.
9A circuits don\'t exist here, and afaik never have. (I\'m reasonably familiar with wiring practices going back to around 1910.) Sockets circuits are mostly 32A, some 20A, some 30A, a few 15A or 16A.
Where is \"here\" and what connectors do you use for these various circuits?