I've noticed that a bundle of people are buying 110v vacs (me included).
You need to bear in mind if you're using 110v that currents will be much higher than 240v.
So, a 3,000W vac on 240v will draw 12.5A whereas the same power on 110v will draw 27A.
Bear that in mind when you're buying extension cables. For a 110v, you really need big, heavy-duty cables or you're heading for problems down the line. You'll have trouble buying 32A 110V cables greater in length than 14M, so you may need to make your own.
Vin