This is for up to 250V.
Please note that volts are not watts neither are amps volts there is a formula I think voltage times amps ,if I am right it should be approx. 7500 watts . That is calling on a very old memory cell that hasn't been used lately. L O L
The power inlet box, model 6337, has concentric knockouts, sized ½”, ¾”, and 1” nominal size.