..... Too late! .....
The experiment has been done. The vac cleaner (unmodified) was plugged
into the mains (240v), and the pipe stuck in the water tank. This is
not a wet n dry vac!
It pumped the entire contents of the 1000 gallon tank out sucesfully.
The water went up the inlet pipe, thru the impellor, directly thru the
motor running on 240v mains, and out the back end. And it did the lot.
And it still works now. No series limiting resistance, no reduced
And now I'm gonna confess something :) It had already been done
before I started this thread. I wouldn't have claimed it could be done
otherwise :) I didnt do it, its a barking idea, someone else did it,
and the vac still works fine afterwards.
You were so convinced it wouldn't work. You were convinced, even tho
you hadn't done the experiment and could find no convincing
theoretical reason that would stop it. You were also convinced it was
dangerous: it is if you just plug it in, tho with proper earth bonding
to case, water outlet and inlet, it can be made safe. It just operates
as an electrode heater, which is standard industrial kit.
This all tells me something about people, emotions, assumptions,
logic, and showmanship.
PS dont try this at home, ever.