december, 2016

06decAll DayNESC What's NewNational Electrical Safety Code 2017 Update Denver 1-Day5400 Washington St, Denver, CO 80216

Event Details



2017 UPDATE – 1 Day Course – denver



Tuesday, December 6, 2016



9:00 am – 4:30 pm



Colorado Rural Electric Assn.

5400 Washington St.

Denver, Colorado



Hi-Line Engineering


CREA Member Fee:

Students in the Class

10-14 students – $200

15-19 students – $150

20-24 students – $120

25-29 students – $105

30-34 students – $95

35-39 students – $90


The fee for non-CREA members is an additional $50.


The cost of the course includes lunch and the supplies.


The fee for attending this course will be billed after the class.


To Register:

Contact Jen Hight at

(303) 455-2700 ext. 700 or


Registration Deadline: November 18, 2016



With thousands of proposed changes, the 2017 NESC includes new clearance and loading requirements, new grounding rules, and new requirements for underground facilities. The 2017 NESC will also have updates to the work rules to harmonize with the OSHA Rules issued in 2014.   This course will focus only on the changes to the NESC and will assume that participants have a working knowledge of the NESC. The changes will be addressed in terms of possible required changes to design standards and work rules for electric utilities. The class focuses on the major changes to the NESC for distribution applications. Engineers, staking technicians, foremen, and construction contractors will benefit from this one-day course.




  1. Purpose and Scope


  1. New Terms and Definitions


  1. Grounding – Exceptions to the 4 Grounds Per Mile Rule


  1. Substations

A.    Impenetrable Barrier

B.    Fencing

C.   Fire Extinguishing Requirements

D.   Atmospheric Adders

E.    Working Space


  1. Overhead Lines – Sections 20 – 23

A.    Single-Grounded Neutrals Clarification

B.    Pruning around Energized and Non-Energized Lines

C.   Clarification on Location of Supply Space and Communication Space

D.   Changes to Clearances




  1. Overhead Lines – Sections 24 – 27
    1. Changes to Grade N and Grade C Construction Requirements
    2. Clarification of “At Crossing”
    3. Revisions to 60’ Height Exemption for Extreme Wind and Extreme Ice
    4. New Load Factors
    5. Revised Conductor Tension Requirements and Aeolian Vibration Issues
    6. Strength Factor for Support Hardware
    7. Revisions to Insulator Rules and Strength Ratings
    8. Guy Insulators


  1. Underground Systems
  1. Grounding
  2. Conduit Separation
  3. Bonding Requirements


  1. Work Rules
  1. Arc Flash
  2. Training for Employees Working in Vicinity of Antennas.
  3. Fall Protection
  4. Approach Distance to Energized Lines
  5. Definitions of Reach and Extended Reach
  6. Automatic Reclosing Rules





A minimum of ten people must be registered for the course to be held. A letter will be sent to all participants confirming their registration in the course.


Cancellation Policy:

Cancellations received on or before the registration deadline will receive full refunds. Cancellations received after the deadline or no shows may be billed the entire registration fee.



Thanks to donations from the operations & engineering group and the Colorado Electric Educational Institute the cost of this course has been discounted.




Colorado Electric Educational Institute

Colorado Rural Electric Association



All Day (Tuesday)



5400 Washington St, Denver, CO 80216

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