I would take some sample temperature readings during typical/hard use periods.

208V rated motor on a 208V supply has always bugged me - there's no allowance for voltage drop as when you connect 220/230V motors to a 240V supply.

The same windings are getting less voltage and more current... it's going to equate to more heat.

Anyone compared 208-230V rated motor's life expectancy when compared to 208V and 240V supplies?