The Medway Handyman wrote:

Capitol wrote:

Just out of interest, I have run a check on my best vacuum cleaner,
which is 110V. Sucking it draws 8.8A but with the flow blocked it only
draws 7.6A. So, it's using about 1KW. 1.8KW, unless it's a specmanship
game, seems like overkill. Maybe someone else can run a similar test and
let us know the results

Blocking the flow will cause the amps to drop. It's moving a volume of
air that takes the power, not the suction.

Mains here today is 251V, my Miele takes

1430W with a PF of 0.96 when running free on max (supposedly 1600W)
540W with a PF of 0.53 when running free on min (supposedly 300W)

the power does drop by 15-20% in both cases when airflow is blocked