Comment by throw0101c
2 months ago
He mentions induction 'hot plates' towards the end, and says that they're limited to the same 1800W and 120V as kettles, but there are "commercial" portable induction stoves that are 220V and can go up to 3500 and 5000W; e.g.:
* https://www.vevor.ca/induction-cooktop-c_10592/vevor-portabl...
* https://www.trueinduction.com/Commercial-Single-Induction-Co...
Just need a NEMA 6 plug (GFCI/AFCI per code as well probably):
In the US. In the UK 2200W induction plates are readily available with a standard plug for ~£40, or if you spend a little more you can go to 3kW - [0] which is about the limit of most domestic circuits but is hotter than most gas hobs.
If you _really_ want more than that you can go a little mental and use one with an integrated battery which can push out 10 kW [1]
[0] https://www.nisbets.co.uk/nisbets-essentials-single-zone-ind...
[1] https://www.impulselabs.com/
This begs the question, and I've genuinely thought this before, of why we don't just strap a battery to a kettle and end this silly debate. If it takes 5 minutes to boil a cup of water in a 1000 watt kettle, that's somewhere around 80Wh... I guess it would be kind of expensive, but couldn't you make a pretty fast kettle with some number of high discharge battery cells?
(Well honestly, I guess the real answer is outside of Internet debates most people probably just don't consider 5 minutes to boil a cup of water to be a problem.)
It would turn an inert device that costs a couple bucks to manufacture and has affectively no usage limit into a bomb that costs a couple hundred bucks (due to lack of economy of scale) and is limited by the battery's rated number of cycles. The battery's proximity to the heat source wouldn't help.
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People that care about the time it takes to boil water just have an instant hot water boiler on (or under) their bench.
It's probably just the price of batteries. You can definitely do this and you'd need like 8 18650 batteries, which today you can get on amazon for $30 USD. A decade ago it might have cost $200-$300.
Given that premium kettles already sell for about $100, there's definitely room for an ultra premium kettle that boils water laughably fast for $150.
Impulse Labs is doing exactly this..
I believe there master plan foresees a future where batteries are more integrated with a house for decentralized grid storage. But the additional consumer advantage is better hardware - i.e cooking time.
That seems a terrible waste of batteries to me. A boiling water tap seems like a better idea to me - electric heater with a pressurised insulated vessel that just dispenses from your tap.
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Sure, but over in 230V-land 3500W hot plates are completely standard, and can plug into any regular wall socket. Same with microwaves and hot-air ovens: just put it anywhere on your kitchen countertop and plug it into the nearest socket.
We do also have a "kitchen plug" for high-powered appliances. Those go up to 7.3kW in their regular dual-single-phase 16A version, 11kW when wired with three phases (quite common in households these days), or even 17kW with the (understandably) rarely-used 25A plug variant with three-phase wiring.
And that's not even commercial equipment, just what you'd pick up at your local Best Buy equivalent. The commercial stuff uses CeeForm, which is a three-phase 16A/32A/63A/125A plug. Or it's getting hard-wired.
What is the specific standard for domestic 16 A and 25 A 3-phase plugs you’re referring to?
Not OP but - I can't answer the specific regs, but 16A/240V is absolutely bog standard for the UK and every high street store stocks ovens that will draw this down. They need to be on their own circuit, e.g. this [0].
I've never seen a single oven pull more than this, but devices like [1] are fairly common where you have two independent ovens in one, and it can pull 21A - this would necessitate the 25A supply.
As for three phase - https://www.howdens.com/-/media/howdens/assets/clh_asset_pro... this hob (which I have) will take 3-phase 16A, or single phase 32A. I've not come across any 32A 3-phase devices for home usage, though.
[0] https://ao.com/product/b54cr71g0b-neff-n70-slide--hide-elect...
[1] https://www.smeguk.com/products/DUSF6300X
Perilex.
I swear Vevor makes everything.
It's a Chinese reseller, with some quality control maybe but surely some great service attached to it. But you'll find 90% without vevor Logo on AliExpress.
Still big fan and regular customer, very surprised to see they have a .ca too and likely more.