for circuit breakers
or fuses applied in compliance with the series combination ratings marked on the equipment
by the manufacturer in accordance with 240.86(B)
shall be legibly marked in the field to indicate the equipment
has been applied with a series combination rating. The marking shall meet the requirements in 110.21(B)
and shall be readily visible and state the following:
CAUTION — SERIES COMBINATION SYSTEM RATED______ AMPERES. IDENTIFIED REPLACEMENT COMPONENTS REQUIRED.
Informational Note: See IEEE 3004.5-2014 Recommended Practice for the Application of Low-Voltage Circuit Breakers in Industrial and Commercial Power Systems, for further information on series tested systems.