Products > Test Equipment
Help running this 220v machine in my house
Ian.M:
You'd be surprised how much excess power water heating elements can typically withstand, if kept free from scale.
Pfriemler:
Great stuff. Had much fun viewing it. Made my day :-DD
Nevertheless, it's a risk, if even a small one: due to the tolerances a 230V device has to withstand 253V without any damages. Whatever it is, kettle or TV.
wasedadoc:
--- Quote from: Pfriemler on January 10, 2023, 12:49:30 pm ---Nobody is concerned about the voltage rating?
3000W @ 220V = 16,13 Ohm, 240V -> 3570 W, 20% more heat.
and: simply no idea why this is questioned in "Test equipment"...
--- End quote ---
Power only scales as square of the voltage when the resistance is constant. In the case of a heating element the resistance increases somewhat with temperature meaning the calculated 20% is likely higher than actual.
IanB:
--- Quote from: wasedadoc on January 10, 2023, 03:28:45 pm ---Power only scales as square of the voltage when the resistance is constant. In the case of a heating element the resistance increases somewhat with temperature meaning the calculated 20% is likely higher than actual.
--- End quote ---
But the temperature of the heating element remains close to the temperature of boiling water.
I have several electric kettles and on the rating plate they all say "220 V 2520 W to 240 V 3000 W".
Ian.M:
I hope its actually *got* a heating element and isn't an electrode boiler . . .
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