New table H.3(b) added for guidance on

selection of arc rated clothing and other PPE for users who conduct a hazard analysis to determine the incident energy exposure in calories/cm2 ◦ Less than or equal to1.2 cal/cm2 ◦Greater than 1.2 to 12 cal/cm2 ◦Greater than 12 cal/cm2

Shows maximum short circuit current for

various standard system voltages and operating times ◦ For use of 8 and 40 cal/cm2 arc flash PPE and

clothing H.4(a) for low-voltage systems H.4(b) for high-voltage systems

Fine Print Notes (FPN) have been changed to

Informational Notes (IN) to harmonize with the NEC style.

•Flame-resistant (FR) will no longer be used in the standard. Arc-rated is used, instead. All arc-rated clothing is FR, but not all FR is arc-rated.

•Calories/cm2 (cal/cm2) is the preferred designation for arc-rated clothing and PPE. Joules/cm2 (J/cm2) is secondary

•Hazard Identification and Risk Assessment is used instead of Hazard/Risk Evaluation

Covered. “This standard addresses electrical

safety-related work practices for employee workplaces that are necessary for the practical safeguarding of employees relative to the hazards associated with electrical energy during activities such as the installation, inspection, operation, maintenance, and demolition of electrical conductors, electric equipment, signaling and communications conductors and equipment, and raceways.”

“This standard also includes safe work

practices for employees performing other work activities that can expose them to electrical hazards as well as safe work practices for the following: ◦ (1) Installations of conductors and equipment that

connect to the supply of electricity ◦ (2) Installations used by the electric utility, such as

office buildings, warehourses, garages, machine shops, and recreational buildings that are not an integral part of a generating plant, substation, or control center

Many definitions were deleted that are not

used in the current edition

•Some of these definitions were used when the 70E had a Chapter 4, “Installation Safety Requirements”.

Arc Flash Protection Boundary changed to Arc

Flash Boundary (AFB) Arc Rating now includes ASTM definitions for

ATPV (IN No. 2) and EBT (IN No. 3) New definition for Incident Energy Analysis Working On (energized conductor or circuit

parts) – the words “Intentionally coming” in contact were added

New Article “Application of Safety-Related

Work Practices” •Took 110.1 to 110.4 and made 105 ◦ 110.1 “Scope” ◦ 110.2 “Purpose” ◦ 110.3 “Responsibility” ◦ 110.4 “Organization”

No wording changes