ROSSLYN, Va.—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.
Electrical Manufacturers Association (NEMA) represents nearly 350 electrical
equipment and medical imaging manufacturers that make safe, reliable, and efficient products
and systems. Our combined industries
account for 360,000 American jobs in more than 7,000 facilities covering every
state. Our industry produces $106 billion shipments of electrical equipment and
medical imaging technologies per year with $36 billion exports.