Mersen Publishes NEC14 Reference Guide
Mersen, formerly Ferraz Shawmut, recently published a reference guide titled “2014 National Electrical Code: Changes in Overcurrent and Surge Protection.”
The NEC codifies the requirements for safe electrical installations into a single, standardized source. It is part of the National Fire Codes series published by the National Fire Protection Association (NFPA®), and while not itself a U.S. law, NEC use is commonly mandated by state or local law.
In this paper, Mersen identifies and explains selected key code changes in overcurrent and surge protection, including:
New Circuit Breaker Requirements for 1200A Plus Circuits
SPD Type 4 and New Requirements
Surge Protection without Overcurrent Protection
Short-Circuit Current Rating (SCCR)
Solid State Motor Circuit Protection
Ground Fault Protection (GFP) for 1000A Plus Circuits
Sizing Transformer Protection
PV Shut-off for First Responders
Selective Coordination Requirements
Selective Coordination Not Required in Hospitals
“This Reference Guide endeavors to inform electrical professionals seeking an understanding of the code updates and further demonstrates the analysis used in the final resolutions,” says Peter Walsh, PE, Senior Field Engineer and author of the reference guide.
For additional information and resources on electrical protection, visit ep.mersen.com.