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You will in any case not find any Schukoplug that is allowed for more than 16 Ampere, as that is the maximum current it is designed for.
If you want more than that you have to switch plugs.
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Chances are that you aren't going to find one: most houses aren't wired for 18A anyway (certainly not in the UK) so even if you created one I'd be reluctant to use it as it could well be a major fire risk. I'd start by checking your local building codes / regulations and working from there - but I think you are going to be out of luck.
What do you want that for?
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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OriginalGriff wrote: What do you want that for?
GroLux array?
Peter Wasser
"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts." - Bertrand Russell
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Single spur lines (usually for cooking) can be rigged to 45A (but I've never seen anything but 30A)
However I would definitely wire the WIFI switch inline rather than bother with a plug...
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Yeah, but they tend to be directly wired rather than plugged and run to a separate fuse / isolator.
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Yeah - so I guess my answer to the original question is: The solution you want is not plug based. The WIFI relays at that rating exist, but you will need to talk to an electrician.
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Yes... I'm afraid I won't find it... 
I've got a new office (inside a normal flat) and we are trying to reduce the power consumption from the heating system...
We have the possibility to receive for free a "heat accumulator" (my grandfather is leaving his current flat for a new one) which is a device that gets energy during the night (cheaper electricity) and frees it progressively during the day keeping the office warm at cheaper cost.
The device gets electricity from two sources: one that is used to fill it with energy (power) and another one that is used to control the heat release.
The power source is the one that needs more amperes...
The idea is to get an intelligent switch to activate the power plug only during the cheap electricity hours...
Supposedly those devices along with the air conditioning systems are very effective in terms of comfort/cost.
That office has an oven and a vitro-ceramic hob... I could try to plug the "accumulator" in that line... but this still gives me the problem of switching it on and off automatically...
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We have the same thing here as our primary heating: they are called "storage heaters" and they are basically a big electric fire inside a bunch of bricks. What you need to do is talk to an electrician and your power company - the chances are that you need to change tariff to take advantage of these, as you need cheaper electricity at night - in the UK it's called "economy seven" - and it means a "double meter" which only switches some circuits on at night when it's cheap. Then your electrician wires that circuit to the heaters and it all happens automatically.
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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OriginalGriff wrote: We have the same thing here as our primary heating: they are called "storage heaters" and they are basically a big electric fire inside a bunch of bricks
Exactly!
The power company is already providing the double tariff (here it's called "hourly discrimination" who knows why)...
I'll ask it to an electrician and see if our electrical company provides this service (automatic switch on/off a specific circuit)...
Thanks!
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Maybe you should separate the functionalities :
1. Smart control
2. Switch on/off a high powered line
For 2, use a relais that is 4kW/18A capable, with the appropriate safety.
For 1, use a smart plug to trigger the signal for the relais, or use a Wi-Fi capable arduino - you have plenty of example of DIY arduino-based relais all over the interweb
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Another reason to talk to your sparky is wiring those sorts of devices in must be done by a licensed contractor
- yes that's big $ but if it does catch fire (even if it didn't start the fire they will check all possible ignition points) and it's something you've cobbled together by yourself (even if you did it proper) then it's bye bye insurance - and if any neighbours are affected it's open market for them to sue you.
Even wiring a plug to the unit, or/and fitting the power socket (doesn't matter if the socket is special rating or not), no licensed contractor do, no insurance.
Even if disaster doesn't strike, but say you are renting the property (landlord inspections - these always happen if your landlord sells the property to another person), or your business is subject to lcouncil building or H&S checks: if an inspector sees the item and request the documentation (because it won't be in the original property plans) and you don't have any docco to show them, first it's a fine, then on to it's paying a contractor "un-install an improperly wired wotsit" and then reinstall it - double whammy regardless if they actually performed all those steps or not).
You say it's for an office... Surely you can write it off the business then (what you pay is less then it really costs anyway).
Be smart, for the sake of a few dollars saved today do it properly.
Sure sometimes it's OK to take shortcuts in business, but sometimes just for the sake of a few dollars you really shouldn't.
Sure, change the plug on a computer you bought in USA, but not on something that sucks big current and/or is attached to a building (in particular a commercial building), and really is supposed to be "professionally" installed anyway.
Signature ready for installation. Please Reboot now.
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If you're going to put 4 kW, I suspect you need a Dumb plug, not a smart one.
CQ de W5ALT
Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software
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Just had a 5.3 earthquake. Thought it was a colleague shaking the table! 
Only lasted a few seconds.
Latest Earthquakes[^]
Keep your friends close. Keep Kill your enemies closer.
The End
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Thanks for the link!
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Rock and roll hoochie koo!
Go find Lucy Jones!
Ask her if this is the precursor to the big one - again.
Got outta there I did in 93. Salute!
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When I lived in L.A., I experienced a couple of good ones, 7.2+ I think, was the biggest.
This could be a pre-quake, which means that you could be getting a bigger one soon. If not, have fun with the after shocks. Hope you and everyone there are safe.
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Thanks - it was tiddler although there have been 2 aftershocks at 3 and 2.7 - would not feel those unless they were under your feet!
Keep your friends close. Keep Kill your enemies closer.
The End
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Meh. Since being on top of the mountain during the Landers/ Big Bear double quake, I no longer get out of bed for anything less than an 8.
Will Rogers never met me.
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Having only ever experienced something that barely shook the hanging lights I would probably freak out at anything over about 3 on the R scale.
Never underestimate the power of human stupidity
RAH
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Those are fun, I was calmly working in Venezuela on the 12th floor, when my seat started moving across the aisle to another cubical. Everyone startweed running for the stairwell and I just sat there waing for the hysteria to stop. Then someon came and told me that we were all supposed to walk down the stairs in case there was structural damage. I said"If there might be structural damage, the last place I want to be is in a stairwell with 3000 people! I waited a whilke, then walked down alone and went to lunch.
CQ de W5ALT
Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software
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Keep your friends close. Keep Kill your enemies closer.
The End
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So how many people now realize that Christopher Columbus was Jewish. Also, that there is no picture of Christopher Columbus from his time ([^]. One of the many lies in your history books. Even Wikipedia cannot get it right. He apparently could not even speak Italian.
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He wanted to save on spices so much, he discovered America!
throughout my life, my two greatest assets have been mental stability and being, like, really smart.
modified 20-Oct-19 21:02pm.
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