What NFPA 70E covers
NFPA 70E is the Standard for Electrical Safety in the Workplace. It sets safe work practices, safety-related maintenance requirements and administrative controls for anyone who installs, inspects, operates, maintains or demolishes electrical conductors and equipment. It applies to both AC and DC systems. It covers in-house staff, contractors, general industry and construction sites. NFPA revises 70E every three years. The 2024 edition followed the 2021 edition, and the next edition comes out of NFPA's A2026 revision cycle.
The standard treats safety as a job for both sides. The employer has to run an electrical safety program. The worker has to follow it, which includes getting trained and using the right tools and protective gear. NFPA 70E works alongside NFPA 70, the National Electrical Code, which covers how systems get installed, and NFPA 70B, which covers maintenance.
How NFPA 70E relates to OSHA
OSHA writes the law, and NFPA 70E spells out how to meet it. OSHA's electrical rules are performance-based. They tell employers what result to reach without saying exactly how. NFPA 70E fills in the detailed minimum practices. NFPA says the standard was first developed at OSHA's request and helps employers comply with OSHA 1910 Subpart S (general industry) and 1926 Subpart K (construction).
Utility work comes under a separate OSHA standard, 1910.269, which covers generation, transmission and distribution. OSHA's internal field safety manual for its own inspectors tells them to size arc flash protection with help from a qualified engineer, with the current NFPA 70E tables, or with the Appendix E tables in 1910.269 or 1926 Subpart V.
Who counts as a qualified person
OSHA sorts workers into qualified and unqualified when they work on or near exposed energized parts. A qualified person is someone allowed to do that work. At minimum they must be trained to tell exposed live parts from other parts of the equipment, to find the nominal voltage, and to know the required clearance distances for the voltages they will face. Without that training, a worker is not qualified under 1910.331 through 1910.335.
Being qualified depends on the equipment and the task. The 2024 edition of NFPA 70E says outright that a qualified person has to be qualified for the specific equipment and work involved. Unqualified workers still need training in the safety practices that apply to their job. They may cross the arc flash boundary only if they wear proper protective equipment and a qualified employee supervises them closely.
Arc flash PPE categories
NFPA 70E groups arc-rated PPE into four categories. In the 2021 tables that OSHA reprints, Category 1 needs a minimum arc rating of 4 cal/cm², Category 2 needs 8, Category 3 needs 25 and Category 4 needs 40. Every category calls for arc-rated shirt and pants or coveralls, a hard hat, safety glasses and hearing protection. Categories 3 and 4 add a full flash suit jacket, pants and hood.
Flame-resistant or rubber-insulated gear does not automatically protect you from an arc flash. OSHA points out that most arc flash burns happen when the arc sets ordinary clothing on fire, so the layers under your arc-rated gear matter too. For utility work, employers have to pick PPE based on the calculated incident energy, as 1910.269(l)(8)(v) and 1926.960(g)(5) require.
Pay
USD a year, before tax. Figures show the 25th to 75th percentile for high voltage testing work. They come from U.S. Bureau of Labor Statistics OEWS May 2025 data, adjusted to 2026 with a wage index. State figures are modeled. Pay goes up with voltage class, testing credentials and how much of the work is energized. Refer to the High Voltage & Testing salary guide for figures from live adverts.
What you need
- Who must be trainedOSHA 1910.332 covers any worker facing a shock risk that the installation rules do not reduce to a safe level. Its Table S-4 names electricians, electrical and electronic engineers, technicians and equipment assemblers.
- Qualified person minimumYou must be able to tell exposed live parts from other parts, determine nominal voltage, and know the clearance distances for the voltages you will work near.
- Contact workQualified workers who touch energized equipment directly, or with tools or materials, also need the training required under 1910.333(c)(2).
- Training formatOSHA accepts classroom or on-the-job training. The higher the risk to the worker, the more training the employer has to provide.
- Electrical safety programUnder NFPA 70E, the employer has to set up an electrical safety program, and workers have to follow its policies, procedures and training.
- Arc-rated PPEInside the arc flash boundary, every part of the body has to be protected with clothing and PPE rated for the incident energy at that task.
How to get there
- Before exposureGeneral electrical safety trainingAny worker exposed to electrical hazards gets trained in the safety practices that apply to their job, even if they never become qualified.
- Before energized workQualified person trainingLearn to identify exposed live parts, determine nominal voltage and apply clearance distances, as 1910.332(b)(3) requires.
- Before each new task typeEquipment and task qualificationGet qualified for the specific equipment and tasks you will do, which includes choosing and using the right arc-rated PPE.
- OngoingSupervision and retrainingUtility employers must check compliance through inspections at least once a year. OSHA expects retraining before any task done less than once a year.
- Any timeOptional NFPA certificationNFPA's Certified Electrical Safety Worker needs a high school diploma and 40 hours of electrical safety training within the last three years. It must be renewed every three years.
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Questions people ask
Is NFPA 70E the law?
No. OSHA regulations are the law. NFPA 70E is a consensus standard that lays out ways to meet OSHA's electrical safety requirements, and OSHA relies on its detailed practices.
Who pays for arc flash PPE?
Under OSHA 1910.132(h), the employer has to provide required PPE at no cost to employees and has to pay for replacements, unless the worker lost or deliberately damaged the gear. Employers do not have to pay for everyday clothing such as long-sleeve shirts, long pants and normal work boots. Where another OSHA standard sets its own payment rule, that rule takes over.
How often does arc flash training have to be repeated?
For utility work under 1910.269, a worker needs retraining when they have to use safety practices that are not part of their normal duties. OSHA counts any task done less than once a year as needing retraining first. Employers also have to check compliance through inspections at least once a year.
Does a journeyman license make me a qualified person?
Not on its own. OSHA defines a qualified person by training in specific skills, such as recognizing live parts and knowing approach distances. NFPA 70E also requires that a person be qualified for the particular equipment and task.
Can an apprentice work inside the arc flash boundary?
An unqualified worker may cross the arc flash boundary only while wearing appropriate protective equipment and under close supervision by a qualified employee. The arc flash boundary is the distance at which incident energy reaches 1.2 cal/cm².
Is there a Category 5 for arc flash PPE?
NFPA 70E has four categories. OSHA notes that the Canadian standard CSA Z462 adds a fifth category rated at a minimum of 75 cal/cm², but that category is not part of NFPA 70E.
Sources
- NFPA: NFPA 70E Standard for Electrical Safety in the Workplace
- NFPA: NFPA 70E fact sheet
- NFPA: NFPA 70E A2026 first revision statements
- OSHA: 29 CFR 1910.332 Training
- eCFR: 29 CFR 1910.332 Training (Table S-4 occupations)
- OSHA: 29 CFR 1910.132 PPE general requirements
- OSHA: Protecting Employees from Electric-Arc Flash Hazards (OSHA 4472)
- OSHA: 29 CFR 1910.269 Electric power generation, transmission, and distribution
- OSHA: Field Safety and Health Management System Manual, Chapter 22
- NFPA: Certified Electrical Safety Worker program overview
