Barriers in Service Panels

Barriers are required on the main lugs on service panel boards. The NEC 230.62 discusses the protected lugs are on the load side. Does this mean the lugs on a sub panel board are not required to be protected by a barrier?

That is correct because for a sub-panel the line side terminals can be de-energized by opening the OCPD on the feeder at it’s origin. So if you had a 100 amp circuit breaker in the service feeding a 100 amp sub-panel that breaker can be opened to completely de-energize the sub-panel.


Thank you.