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trader_4 trader_4 is offline
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Default Why are motors not current limited?

On Friday, April 27, 2018 at 11:43:39 AM UTC-4, Jimmy Wilkinson Knife wrote:
On Thu, 26 Apr 2018 16:53:58 +0100, trader_4 wrote:

On Thursday, April 26, 2018 at 11:26:44 AM UTC-4, Jimmy Wilkinson Knife wrote:
On Thu, 26 Apr 2018 08:10:44 +0100, Bod wrote:

On 26/04/2018 06:07, wrote:
On Wed, 25 Apr 2018 20:22:24 +0100, "Jimmy Wilkinson Knife"
wrote:

On Tue, 24 Apr 2018 23:42:13 +0100, wrote:

On Tue, 24 Apr 2018 19:57:09 +0100, "Jimmy Wilkinson Knife"
wrote:


But you can't plug up to a 3.1kW device into any outlet you like anywhere in the house. Power tools, fan heaters, kettles, irons, two things on one adapter, there are so many things that half the power just ain't enough for. It's so much more convenient in the UK to be able to power anything in any room from any socket.

How much portable 3KW equipment do you have? It is pretty hard to find
anything you can carry around except your 2kw tea pots that is more
than 1440w. We are not in that big a hurry to drink tea ... or drink
tea at all.
I drink iced tea but I cold brew that.

2.4kW actually, and they're called kettles. How the **** do you heat hot water to make coffee, tea, or to put in a saucepan to cook food?

In a coffee maker. I cold brew tea.

And there's a 2.2kW angle grinder sat to my left. Where the **** would you plug that in in your home?

Do you have a link to where I can buy one of them? What model is it?

https://www.amazon.co.uk/VonHaus-Gri.../dp/B01MTCD0QQ

The exact model I was going to buy, but at only £55.

Then I found a Hyundai (more reliable well known make) at £45.

These things go through concrete blocks or brick like it was butter.

--
We always hold hands. If I let go, she shops.


And here is the 110V version that I could plug in he

https://www.google.com/url?q=https%3...7kRtQL7opE72Sg


Anything else I can help you with? Again, this is a specmanship issue.
I suspect you're 2200 watt rating is with a locked rotor or similar.
We have angle grinders, including 9" ones, out the whazoo that plug into
a 15A receptacle. There is no "problem".


Yeah, run a 20A device off 15A, wonderful. The rating is how much it uses typically.


Show us your cite for that.


In the case of a hoover, that's when it's idling


I see, so you "typical use" for you is just watching a hoover idling.
You just watch it, like a TV?


(more power used with more air going through it).

Every vacuum I've seen has air going through it even when "idling".




In the case of an angle grinder, that's when you're making it cut through something. You'll find a locked rotor is way above 2200W, that's why without protection it would die in seconds.


Of course everyone but a moron would let go of the trigger in a second
or less. Still waiting for spec definitions that show what exactly
the 2200W is based on. It's very typical for worst case to be based
on locked rotor. And I've shown you spec sheets for 110v
angle grinders that also show 2200W rating. They don't require a 30A
receptacle. Bottom line, there is no problem. We regularly buy and use
even 9" angle grinders on 15A, 120v circuits. Go look at HD or similar
websites. And we live in houses
here, not industrial fabrication shops. Who even needs anything but
a modest angle grinder in a house, if at all, to begin with? Maybe
you should be concerned about changing the oil in your car instead of
how US homes are wired.