Electrical Safety | Arc Flash Hazard Analysis

OSHA 1910.132 is not optional — it's the law and it is mandatory.


  • Protective equipment, including personal protective equipment for eyes, face, head, and extremities, protective clothing … shall be provided.
  • The employer shall assess the workplace to determine if hazards are present.
  • If hazards are present or likely to be present, the employer shall: select, and have each affected employee use, the types of PPE that will protect the affected employee from the hazards identified in the hazard assessment.
  • The employer shall verify that the required workplace hazard assessment has been performed through a written certification that identifies the workplace evaluated; the person certifying that the evaluation has been performed; the date(s) of the hazard assessment; and, which identifies the document as a certification of hazard assessment.
  • The employer shall provide PPE training to each employee.

PDF IconDownload OSHA 1910.132.

NFPA 70E: Standard for Electrical Safety in the Workplace

Paragraph 130.5 – from NFPA 70E 2015 Edition:

  • 130.5 Arc Flash Risk Assessment
    • An arc flash risk assessment shall be performed and shall:
      • Determine if an arc flash hazard exists. If an arc flash hazard exists, the risk assessment shall determine:
        • Appropriate safety-related work practices
        • The arc flash boundary
        • The PPE to be used within the arc flash boundary

Issues with NFPA PPE Lookup Tables:

Some people use Table 130.7(C)(15)(A)(b) Arc Flash Hazard PPE Categories for AC Systems.

The issue with the Lookup Table is that it specifies a maximum fault clearing time; therefore, the arcing fault current must be calculated and plotted on the device time current curve to see if the table is even applicable.

Learn more: NFPA 70E.

Data Gathering Example

I can teach your in-house electrician or outside maintenance electrician how to gather the data needed for an arc flash study, or we can recommend a trained electrician.

Data Gaterhing - Field Survey Work Sketch Example

PDF IconDownload PDF of Sketch

The Importance of Durable Arc Flash Labels

Swan Engineering Inc. uses only high quality durable labeling that improves safety and productivity, and complies with industry standards.

All of our labels are suitable for indoor and outdoor use for durability. They are UV, water, chemical and abrasion resistant.

Sample One-Line Diagrams

Download the following PDF sample one-line diagrams:

  1. Record
  2. Cursory Review
  3. Short Circuit Study
  4. Equipment Evaluation
  5. Alternate Equipment Evaluation
  6. Settings
  7. Arc Flash

PDF IconOr, download all diagrams in a single PDF file.