How do you run a 100 amp subpanel off a 60 amp subpanel?

To run a 100 amp subpanel from a 60 amp subpanel, you first need to ensure that the 60 amp subpanel is capable of handling the additional load. Install a double-pole 60 amp breaker in the 60 amp subpanel and connect it to the feeder wires that will supply the 100 amp subpanel. However, since the 60 amp subpanel cannot provide full capacity to the 100 amp subpanel, you should limit the load on the 100 amp subpanel to a maximum of 60 amps. It's also advisable to consult with or hire a licensed electrician to ensure compliance with local electrical codes and safety standards.