Fully Rated Selectively Coordinated

This is a fully rated system with an additional
system (circuit breakers) design characteristic:
within the range of selectivity, overcurrent
protective device closest to the fault, opens the
circuit, while the upstream overcurrent
protective device remains closed. This limits
unnecessary interruption of service to
unaffected portions of the system. A system
coordination study may be advisable to assure
optimum selectivity.