Re: Motor Starters
The equipment manufacturer should have the information you need.
How are you going to start and stop these motors?
Rarely are 1.5HP motors supplied with integral protection, so I would plan on providing my own. If they all run at the same time I would use a single magnetic contactor (for on-off) feeding individual "manual motor controllers" (i.e. Square D type GV). If they run individually then use motor starters.
see 430.53(C)and 430.109(6)
Just because you can, doesn't mean you should.