So, to confirm my whole life thinking, if you double the voltage you halve the amps, I can sleep again. 8>)
I now see the fan is working harder to reach its designated speed for a given voltage due to the resistance of the radiator, this is the additional amp requirement.
I did have pieces of wood under the shroud edges during the kitchen testing to allow air through, this would have skewed my numbers for sure.
So thanks to all for clearing that up,it's interesting that we all (except Dave) have a different take on the sparky stuff and never had it 100% right.
I will see what a 60 amp breaker makes if the load.
Dave you have another email via your website, no rest for the wicked.
'Feets', I agree, yesterday at idle, outside temps were at 32°C, the fan runs at it's first speed and can still shut off, its a great piece of kit.
