Just started a butcher shop renovation and found that their bandsaw is 3 phase, fed with a Hass phase converter, which is on a 220v 20 amp breaker at the panel.
Converters ratings are 220v 3hp 11.7 amps

If I read the literature correctly it states that the motor to be connected's FLA is not the FLA the converter will "see" you take the FLA of the motor and multiply by 1.41 to find the converter's true load. Which makes sense with it not being true 3 phase.
So... this guy wants to use the existing phase converter to supply not only his 6.2amps 3 phase bandsaw but also his 4.8 amps 3 phase grinder which will be relocated in the walk in cooler.
The converter can't handle both at the same time so I'm looking into whether it's possible to have some sort of starter contact interlock so it's one load or the other.
Am I correct about the converter? Any suggestions as far as the starter?
Thanks