Why Selective Coordination is Mandatory
Selective coordination for elevator circuits has been a requirement since the 1993 NEC, and the industry has adjusted to compliance. For two NEC cycles, opposition to the 700.27 and 701.18 requirements has vigorously worked on removing or diluting these selective coordination requirements. However, during this time, the requirements have been reaffirmed and expanded with Article 708, COPS, in the 2008 NEC. Now, three Code Making Panels have inserted selective coordination requirements in four Articles of the NEC. These Articles provide the minimum requirements for these special systems that are essential for life safety, public safety and national security.

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