What is the nameplate voltage of the motors? There is only a 10% window on the motors. In order to provide X amount of HP, the voltage/current relationship will be inversely proportional. If the motors are listed as 240 volt, you should not operate them at 208. However, if you do, the current will probably increase and if your OL protection is properly sized, the relay will likely trip.
[This message has been edited by Redsy (edited 07-15-2002).]