DIY Dummy Load on the cheap

[wattsabundant]

I must wonder how hot such a device would really get when powered with a typical audio amp. It's rated at 3500 watts, after all.

It uses (dissipates) 3500 watts of power at 240V when immersed in a tank of water. It shuts off when the water reaches the temperature setting of the tank. When used as a load resistor there is nothing to limit how hot it will get in free air.

 

[Kubla]

like most heating elements, it's resistance rises as it gets hot, if it gets too hot, it will fail, if you use it in a bucket of water, the heat rise should not be very much, since they are cheap, you could always test this theory
in a water heater, the thermostat turns off the heating elements, not the elements themselves