National Electrical Safety Code - a PDH Online Course for Engineers

National Electrical Safety Code

Course Outline

This 15-hour course presents the rules for the practical safeguarding of persons during the installation, operation, or maintenance of electrical supply and communication lines and associated equipment. These rules contain the basic provisions that are to be considered for the safety of employees and the public under the specified conditions.

The course materials are based entirely on the “National Electrical Safety Code C2-2023.

This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.

Learning Objective

At the conclusion of this course, the student will be familiar with:

Definitions of the terms that are for use with the National Electrical Safety Code;
The scope that these rules cover;
Who is responsible for meeting these rules;
When and how these rules may be modified or waived;
The methods of protective grounding of supply and communication conductors and equipment;
General requirements for enclosures of electric supply equipment;
Requirements for rooms and spaces in which electric supply equipment is installed;
Illumination requirements for electric supply stations;
Emergency lighting requirements for electric supply stations;
Guarding requirements for live parts;
Supplemental barriers or guarding requirements within electric supply stations;
Clearance requirements from live parts within electric supply stations;
The required provisions for stationary installations of storage batteries;
The requirements for location and arrangement of power transformers and regulators;
The short circuit protection requirements for power transformers;
Requirements for circuit breakers, reclosers, switches, and fuses used in electric supply stations;
The installation requirements for electrical equipment utilized in electric supply stations;
The requirements for structural arrangements of overhead lines and the extension of such systems into buildings;
Requirements for overhead line spacing, clearances, and strength of construction;
Grounding requirements for Overhead lines;
Grounding requirements for overhead line supporting structures and equipment;
The difference between various classes of overhead lines and associated equipment;
The difference between clearance measurement and a spacing measurement;
The three general degrees of loading due to weather conditions known as clearance zones;
How to determine the required radial thickness of ice, wind pressures, temperatures, and additive constants used to calculate inelastic deformation;
Requirements that apply only to portions of structures used for overhead lines that workers ascend;
The required grades of construction for overhead lines;
The general loading requirements for overhead lines;
How to determine the vertical load component and the horizontal load component;
Strength requirements for support structures for overhead lines;
Overhead line insulation requirements;
Mechanical strength requirements for overhead line insulators;
The requirements for supply and communication cables and equipment used in underground or buried systems;
The requirements for direct-buried supply and communication cable;
The supply cable or conductor burial depth;
The separation requirements for supply and communication cable in buried or underground systems;
The work rules to be followed in the installation, operation, and maintenance of electric supply and communication systems;
The requirements for the employer to assess the potential exposure to an electric arc for employees who work on or near energized parts or equipment;
The employee rules for working on or with overhead lines;
The employee rules for working on or with underground lines;
The additional work rules for communication employees;
The additional work rules for supply employees;
Example 1 of Appendix C that demonstrates the basic application for determining the tower and wire wind loads;
Example 2 of Appendix C illustrates the calculation of the wind load at the assumed geometric center of a Delta wire configuration;
Example 3 of Appendix C demonstrates the application of a non-uniform wind load distribution for structures taller than 250 feet;
Example 4 of Appendix C demonstrates the application of wind load on a distribution wood structure.

Intended Audience

The intended audience is professional electrical engineers, project managers, and project engineers, involved in the installation, operation, or maintenance of electrical supply and communication lines and associated equipment.

Benefit to Attendees

Provide a professional development course that covers the rules and requirements used to safeguard personnel during the installation, operation, or maintenance of electrical supply and communication lines and associated equipment.

Course Introduction

This course presents the rules for the practical safeguarding of persons during the installation, operation, or maintenance of electrical supply and communication lines and associated equipment. These rules contain the basic provisions that are to be considered for the safety of employees and the public under the specified conditions. The course is intended to (1) provide the rules that cover supply and communication lines, equipment, and associated work practices employed by a public or private electric supply, communication, railway, or similar; (2) describe the responsibilities of the utilities, authorized contractors, or other entities, as applicable, performing design, construction, operation, or maintenance tasks for electric supply or communication lines or equipment covered by this Code.

The course materials are based entirely on the “National Electrical Safety Code C2-2023. It will be necessary for the student to obtain a copy of the “National Electrical Safety Code C2-2023 or have access to a copy of this code. This is a very useful resource and is recommended that all practicing electrical or project engineers involved in electrical supply and communication lines and associated equipment engineering and design, construction, or maintenance should be familiar with and up to date with the rules provided in this code.

Course Content

These rules contain the basic provisions that are considered necessary for the safety of employees and the public under the specified conditions. The purpose of the rules is the practical safeguarding of persons during the installation, operation, or maintenance of electric supply and communication lines and associated equipment. The course is not intended as a design specification or as an instruction manual. You are required to obtain a copy and study the “National Electrical Safety Code C2-2023”. The NESC is a useful reference tool that every practicing electrical engineering professional should have access to.

The “National Electrical Safety Code C2-2023” can be purchased from the following websites:

http://shop.ieee.org/
http://www.global.ihs.com/

“National Electrical Safety Code C2-2023”
Table of Contents
Section 1 Introduction to the National Electrical Safety Code
Section 2 Definitions of special terms
Section 3 References
Section 9 Grounding methods for electric supply and communications facilities
Part 1 Safety Rules for the Installation and Maintenance of Electric Supply Stations and
Equipment
Section 10 Purpose and Scope of Rules
Section 11 Protective arrangements in electric supply stations
Section 12 Installation and maintenance of equipment
Section 13 Rotating equipment
Section 14 Storage batteries
Section 15 Transformers and regulators
Section 16 Conductors
Section 17 Circuit Breakers, reclosers, switches, fuses, and other equipment
Section 18 Switchgear and metal enclosed bus
Section 19 Photovoltaic generating stations
Part 2 Safety Rules for the Installation and Maintenance of Overhead Electric Supply and Communication Lines
Section 20 Purpose, scope, and application of rules
Section 21 General requirements
Section 22 Relations between various classes of lines and equipment
Section 23 Clearances
Section 24 Grades of construction
Section 25 Structural Loadings for Grades B and C
Section 26 Strength requirements
Section 27 Line insulation
Part 3 Safety Rules for the Installation and Maintenance of Underground Electric Supply and Communication Lines
Section 30 Purpose, scope, and application of rules
Section 31 General requirements applying to underground lines
Section 32 Underground conduit systems
Section 33 Supply cable
Section 34 Cable in underground structures
Section 35 Direct-buried cable and cable in duct not part of a conduit system
Section 36 Risers
Section 37 Supply cable terminations
Section 38 Equipment
Section 39 Installation in tunnels
Part 4 Rules for Operation of Electric Supply and Communications Lines and Equipment
Section 40 Purpose and scope
Section 41 Supply and communications systems- Rules for employers
Section 42 General rules for employees
Section 43 Additional rules for communications employees
Section 44 Additional rules for supply employees
Appendix A Uniform system of clearances
Appendix B Uniform clearance calculations for conductors under ice and wind conditions adopted in the 2007 Edition
Appendix C Example applications for Rule 250C Tables 250-2 and 250-3(a) and Table 250-3(b)
Appendix D Practical Approaches to Reducing Transient Overvoltages Factors for Live Work
Appendix E Bibliography
Annex 1 Metric tables and figures
Annex 2 Letter symbols for units

Course Summary

This 15-hour course presents the rules for the practical safeguarding of persons during the installation, operation, or maintenance of electrical supply and communication lines and associated equipment. These rules contain the basic provisions that are to be considered necessary for the safety of employees and the public under the specified conditions.

Related Links

For additional technical information related to this subject, please visit the following websites or web pages:

http://www.ansi.com/
http://www.ieee.com/
http://www.nfpa.com
http://www.nema.com

Quiz

Once you finish studying the above course content, you need to take a quiz to obtain the PDH credits.

DISCLAIMER: The materials contained in the online course are not intended as a representation or warranty on the part of PDH Center or any other person.comanization named herein. The materials are for general information only. They are not a substitute for competent professional advice. Application of this information to a specific project should be reviewed by a registered architect and/or professional engineer/surveyor. Anyone making use of the information set forth herein does so at their own risk and assumes any and all resulting liability arising therefrom.