Aerocare - Las Vegas 4490 Delancey Drive, Las Vegas NV 89103 Phone Number: (702) 257-2575
1 Automatically turn generator on and switch power to it when they detect a drop in line voltage; turn generator off when they sense the line power is restored.  Can be used with portable generators as long as the generator has an electric starter.
The answer to this problem is to use power supplies that are made to communicate with each other so they can collaborate, a switchmode power supply feature know as parallel forced sharing. Sometimes this takes the form of a master-slave operation, and sometimes they just force each other to put out the same current.