Requirements

What actually governs electrical work at your site

OSHA sets the requirement. NFPA 70E is the method used to meet it. Twenty-two state plans replace the federal rules with their own. Plain answers below, each one written to be checked.

29 CFR 1910 Subpart S General industry electrical Design of electrical systems and safety-related work practices. This is the rule an inspector cites at a plant, a warehouse or a data center. NFPA 70E, 2027 edition How compliance gets shown Not a law, and not adopted as regulation by any state. It is the consensus standard that defines what safe work practices mean in practice. 29 CFR 1926 Subpart K Construction electrical Applies once the work is construction rather than maintenance, including temporary wiring. Sites get that classification wrong often. 29 CFR 1910.269 Power generation and distribution Utility-side work has its own rule. Support facilities and contractor work often fall back under Subpart S instead.

No state has adopted NFPA 70E as law

This surprises people, and plenty of training vendors imply otherwise. We checked every state plan that regulates private employers. NFPA 70E appears in non-mandatory appendices, in reference lists, and in one state's published interpretation letter saying plainly that it is guidance and not incorporated by reference. It does not appear as a binding requirement anywhere.

That does not make it optional. OSHA and the state plans treat NFPA 70E as the recognized industry consensus standard, and it is what an inspector measures your work practices against through the General Duty Clause and the training rules that do bind. The distinction matters because it changes what your documentation has to say.

One more thing worth keeping straight: NFPA 70 is the National Electrical Code, adopted almost everywhere. NFPA 70E is a different document, adopted essentially nowhere. They get conflated constantly.

Then there are the state plans

Twenty-two jurisdictions enforce their own occupational safety standards for private employers instead of the federal ones. Seven more cover only state and local government, so private employers there stay under federal OSHA. Some states write their own electrical rules outright. Others adopt the federal text but freeze it at a fixed edition, which means later federal amendments are not automatically law where you are.

Find your state

Questions we get asked most

Does OSHA require NFPA 70E training?

OSHA requires that employees be trained in safe work practices. It does not name NFPA 70E in the rule text. It is the recognized method for showing those practices were followed, which is why training gets built against it.

Is trained the same as qualified?

No, and this is the single most common audit finding. Qualified is a determination the employer makes about a specific person on specific equipment. Training is one input to it.

How often does retraining have to happen?

On a defined interval, and additionally whenever the work practices, the equipment, or the person's demonstrated performance change. Your written program has to state the interval you chose.