Working On or Near Energized Electrical Systems
For qualified electrical workers and their supervisors: why de-energizing comes first and when live work is justified under OSHA 1910.333, electrical safety programs and qualification under NFPA 70E-2024, AC and DC shock approach boundaries, arc flash physics and IEEE 1584 inputs, incident energy analysis versus PPE category tables and NEC 110.16 arc flash labels, energized work permits, the eight-step electrically safe work condition, arc-rated PPE and rubber glove classes, CAT-rated meters and insulated tools, batteries, solar, EV chargers and capacitors, rescue and OSHA 1904.39 reporting, and a capstone energized task at a 480 V MCC.
HSE-224 12 lessons · 6 h 11 min
Offered by HSM University · Safety Training
This is the American version of this course. See the Canadian version.
What you'll learn
- Explain why de-energizing is the default and identify the limited conditions that justify energized work.
- Describe the elements of an electrical safety program under NFPA 70E and OSHA, including qualification, retraining and audit intervals.
- Determine limited and restricted approach boundaries for AC and DC systems and explain who may cross them.
- Describe the physics and hazards of arc flash and arc blast and the factors that drive incident energy.
- Compare the incident energy analysis and PPE category methods, estimate the effect of distance and interpret arc flash labels.
- Prepare and evaluate an energized electrical work permit and recognize tasks that are exempt.
- Apply the eight-step process to establish and verify an electrically safe work condition.
- Select arc-rated clothing and rubber insulating gloves from incident energy and voltage, and inspect them correctly.
- Choose test instruments and insulated tools by measurement category and rating and apply safe testing practices.
- Recognize the special hazards of batteries, solar, capacitors, EV chargers, data centers and utility systems.
- Plan emergency response for energized work and meet reporting and investigation duties after an incident.
- Plan a justified energized task from request to close-out using the hierarchy of controls.
Course content
12 lessons · 6 h 11 min total · final exam
- 1 Why energized work is the last resort 32 min · quiz
- 2 Electrical safety programs and qualified persons 31 min · quiz
- 3 Shock hazard and approach boundaries 32 min · quiz
- 4 Arc flash and arc blast 30 min · quiz
- 5 Arc flash risk assessment and labels 32 min · quiz
- 6 Energized electrical work permits 30 min · quiz
- 7 Establishing an electrically safe work condition 30 min · quiz
- 8 Arc-rated and shock protective PPE 32 min · quiz
- 9 Insulated tools, test instruments and safe testing 30 min · quiz
- 10 Batteries, solar, capacitors and other special systems 31 min · quiz
- 11 Emergency response and incident investigation 31 min · quiz
- 12 Capstone: planning a justified energized task 30 min · quiz
- E Final exam 20 questions
Requirements
Recommended background. You can start any course at any time.
Description
For qualified electrical workers and their supervisors: why de-energizing comes first and when live work is justified under OSHA 1910.333, electrical safety programs and qualification under NFPA 70E-2024, AC and DC shock approach boundaries, arc flash physics and IEEE 1584 inputs, incident energy analysis versus PPE category tables and NEC 110.16 arc flash labels, energized work permits, the eight-step electrically safe work condition, arc-rated PPE and rubber glove classes, CAT-rated meters and insulated tools, batteries, solar, EV chargers and capacitors, rescue and OSHA 1904.39 reporting, and a capstone energized task at a 480 V MCC.