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Session Information

Achieving Selective Coordination

Session Type: Pre-Convention Workshops
Track Number: PW-4
Location: BCEC
Room: 156C
Speaker: Gregory W. Massey

Date: Friday, October 01, 2010
Time: 10:00 AM - 12:00 PM


NECA-700 is a new National Electrical Installation Standard (NEIS) that is titled “Standard for Installing Overcurrent Protection to Achieve Selective Coordination.” This presentation provides a high level review of the one of the newest and most popular NEIS to date. Since selective coordination recently became requirements in Articles, 517, 700, and 701, there have been many unnecessary misconceptions and fears about compliance.

The goal of selective coordination is to limit an electrical outage only to that portion of the electrical system that experiences an overcurrent (overload, ground fault or short circuit) event.  What that means practically is that the overcurrent protective device, circuit breaker or fuse, closest to the overcurrent is the only device that operates to clear the event.  This new industry standard describes the application procedures for installing low-voltage overcurrent protection to achieve selective coordination. NECA 700 covers the installation of low-voltage overcurrent protective devices, circuit breakers and fuses, rated 600 volts and less, for selective coordination in electrical distribution systems for residential, commercial, and industrial applications. 

This presentation shows a practical approach to achieving selective coordination of overcurrent devices as required by the NEC for emergency power systems and simplifies what many believe to be very complex. This course provides attendees with a concise review of multiple methods that can be used for designs that achieve selectivity in all levels of the system to minimize blackouts in critical operations facilities.

Speaker Bio:

Gregory W. Massey, P.E. attended the University of Missouri, Columbia, where he received Bachelor's and Master's of Science degrees in Electrical Engineering. Mr. Massey is a consulting engineer with 20 years of design and project management experience. Mr. Massey is the author of over 40 publications, including "Essentials of Distributed Generation," Jones and Bartlett Publishers, and is the lead author for several National Electrical Installation Standards published by NECA. Mr. Massey is a Registered Professional Engineer in the state of Missouri.

Please note that every state handles licensure and continuing education credits differently. To avoid confusion, NECA strongly recommends you check with your state authority whether they will grant these CEUs for management education programs held at NECA 2010 Boston.

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