Branch and Feeder Circuit Design | Standards Michigan

Branch and Feeder Circuit Design

During our online teleconferences we are able to discuss technical specifics without violating NFPA intellectual property rights.


Branch and Feeder Circuit Design

November 30, 2019

Compact Muon Solenoid / European Organization for Nuclear Research





Let’s start marking up the 2023 National Electrical Code, shall we?   We will collaborate with IEEE Standards Coordinating Committee 18 — the committee that follows NFPA electrical safety consensus products and coordinates the response of IEEE electrical power professionals.

A good place to start is with the transcripts of the 2020 revision — AVAILABLE  HERE for free.   We look for proposals that failed for one reason or another; holding fast to our hunch that changes to the ampere load requirements that appear in the prescriptive statements to designers and inspectors of Chapter 2 could changed.   The 2020 transcripts of Code-Making Panel 4 are linked below:

Code‐Making Panel 2 Public Input Report (991 Pages)

Code-Making Panel 2 Public Comment Report (402 Pages)

We have been trying for several NEC revision cycles to change the “Type of Occupancy” tabulations of Table 220.12 to reflect more granular definition in the Volt/Ampere requirement of 33 VA/m2 (3 VA/ft2) for School/university and Sports arena.   Some of the problem in Table 220.12 regarding electrical loads in education facilities lies in its foundation built upon the International Building Code; the remainder of the problem lies with the education facility industry itself; described in detail in our ABOUT.

The good news is that the NFPA Fire Protection Research Foundation (FPRF) recognizes the problem and is acting on it; described in previous posts and in its project portfolio.  Keep in mind that Standards Michigan, the original voice of the user-interest for education facility industry in the global standards system, has to compete with other, competitor stakeholders who make their market in this and in other consensus products accredited by the American National Standards Institute.

Public input for the 2023 National Electrical Code is due September 10th.    We will collaborate with the FPRF and the IEEE Education & Healthcare Facilities Committee, and others, to get informed public input to Code-Making Panel 2 and the NEC Technical Correlating Committee.   See our CALENDAR for our next Electrical & Telecommunication teleconference, open to everyone.

Issue: [19-201]

Category: Electrical

Colleagues: Mike Anthony, Scott Gibb, Jim Harvey, Kane Howard, Paul Kempf, Philip Ling, Jose Meijer



IEEE Industrial Applications Society: The safety and economic benefit of reduced power design densities permitted in the 2014 National Electrical Code (Anthony, Ling, Meijer)



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