3. In the case of industrial vacuum cleaners, is the single-phase or three-phase model better?
We're talking about the power supply, of course. If you have a choice, vacuum cleaners with a single-phase power supply are better for intermittent, limited use. Three-phase vacuum cleaners, on the other hand, are more suitable for prolonged or even continuous operation.
However, it is important to remember that only three-phase vacuum cleaners can deliver high power, which is often needed for industrial applications.