One thing missed in all of the discussions so far is that once the water reaches 100 degC you have to dump in a *lot* more heat to change its state from liquid to gas. I'm too lazy to go look up the energy required for the state change, but it's substantial.
- Bruce Raymond
Well yeah I know I was pushing it, some here seem to think the resistors will vaporise as soon as you switch on.
I already ran the same resistor at 10 x rated in water and predicted it would eventually fail from lead corrosion.
For 26 x rated I figured there would be too much localised boiling so went for oil which likely offers significantly less cooling.
The resistor is wire wound on something then coated with a thin layer of cement or ceramic loaded paint or something.
I would like to have tried one of the green glazed ceramic types, but didn't have a suitable value and power supply kicking around.
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Yes. You will see, that with the right resistors, I am one of the people who believe it is probably possible, though like you, also expect corrosion of some form to be the most likely failure if the overload is 'reasonable'.
Fair enough.
You should try a much bigger one (evil grin - pictures of a person boiling a
300 gallon oil tank, with a couple of hundred watt 1 ohm resistors in series, connected directly to the mains...). :-)Best Wishes
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