Can you hook a 460v machine to 550v power supply?

No, connecting a 460V machine to a 550V power supply is not advisable, as the higher voltage can damage the machine and create safety hazards. Most equipment is designed to operate within a specific voltage range, and exceeding that can lead to overheating, insulation failure, or permanent damage. It's essential to use power supplies that match the voltage requirements of the equipment to ensure safe and reliable operation. Always consult the manufacturer's specifications before making any connections.