I´ve been doing a bit of off grid evo usage, ie powering the evo using a pure sine wave inverter running off solar / batteries. Now don´t panic folks, I know it say´s on the website not to do this but I pointed out to the rep on the web chat that I run PA´s, projectors, lights etc off grid and it would be a bit embarrasing if I couldn´t power my evo.
So she had a chat with Siebo and he said it would be ok presuming it´s a "high end inverter" ie pure sine wave and ideally not a cheap crappy chinese one. Btw I´ve been using a Xantrex prosine inverter, I think it´s a usa company, the important thing is it´s pure sine wave so it´s just like a house supply.
So I thought I´d see how much the evo draws at the wall. This is a 220v volt (uk / eu) version
On warm up (warming at 12) it used between 102 and 73 watts, it´s possible the peak could be higher but the meter was digi not analogue so can´t be 100% definate.
Once it reached temp or when it needed to regain temps it was using slighty less, fluctuating between 75 and 60w
When it was just on standby it was drawing only 1.8w
I tried heating it with the dial on 5(full) and it drew 108w
So I´d say it uses a max of 150w or you could run it with only a 150w inverter, although I´d recomend 300w so you´ve got plenty of headroom. As I said I was using my old xantrex which is 1800w, but it´s running loads of other stuff at the same time.
On a different note my evo is still whistling, I can get 2 different tones depending how hard I pull, after 2 months. I did read it would go but mine hasn´t. I´ve had to use a thin bit of cotton material wrapped over the bamboo, it also acts as a filter. The draw resistance is a bit worse but the evo is silent at any draw speed.
And finally does anyone (uk or eu) know where to get hydra tubes (non vapexhale) from ? Do they even exist or is it a chinese thing?