OSHA 1910.333 vs. NFPA 70E: Building a Compliant Arc Flash Program

Frequently Asked Questions

Do I need OSHA 1910.333 or NFPA 70E for an arc flash program?

You need both in practice. OSHA 1910.333 is the legal baseline for electrical safe work practices, and NFPA 70E provides the practical framework for building and running the program.

Does OSHA require electrical equipment to be de-energized before work starts?

Yes, the post explains that OSHA’s basic expectation is to de-energize exposed live parts before employees work on or near them. Energized work should only happen when de-energizing creates additional hazards or is infeasible because of equipment design or operational limitations.

What should a compliant arc flash safety program include?

The post says a workable program should connect policy, training, qualified person rules, labeling, shock and arc flash risk assessments, procedures for establishing an electrically safe work condition, PPE practices, contractor coordination, and periodic auditing. It should also include a clear process for justified energized work and job planning in the field.

What are the most common gaps in arc flash programs?

Common gaps include outdated labels, LOTO procedures that do not match electrical task steps, unclear qualified-person definitions, contractor differences, routine energized troubleshooting without justification, and weak field verification. The post also points to poor documentation of audits, corrective actions, and program updates.

How can I tell if our arc flash program works in the field and not just on paper?

The post recommends following one real electrical task from planning through execution. If the answers on de-energization, authorization, hazards, PPE, approvals, LOTO, and supervisor checks change by crew, shift, or contractor, the program likely needs tightening.