The purpose of this paper is to provide guidance to engineers regarding the National Electrical Code (NEC) requirements for selective coordination.
July 28, 2016—The National Electrical Manufacturers Association (NEMA) published NEMA ABP 1-2016 Selective Coordination of Low-Voltage Circuit Breakers. The purpose of this paper is to provide guidance to engineers regarding the National Electrical Code (NEC) requirements for selective coordination. This paper specifically addresses how to comply with these requirements for low-voltage circuit breakers.
Originally developed in 2010 by the NEMA Molded Case Circuit Breakers Committee, ABP 1 has been updated to include the requirements in the 2014 edition of the NEC.
NEMA ABP 1-2016 may be downloaded at no cost on the NEMA website.
