NFPA 791-2024 PDF

Full title and description

NFPA 791: Recommended Practice and Procedures for Unlabeled Electrical Equipment Evaluation — a short recommended-practice document that provides procedures for evaluating electrical equipment that is not listed or labeled by a third‑party certification body, including documentation, inspection, testing, reporting, and labeling practices for field evaluation bodies (FEBs) and authorities having jurisdiction (AHJs).

Abstract

Provides recommended procedures for the evaluation of unlabeled electrical equipment in conjunction with nationally recognized product safety standards and any requirements of the authority having jurisdiction (AHJ). Topics include construction inspection, electrical testing, reporting and documentation, conditions of acceptability, FEB labeling and control, and guidance for evaluating multiple units of the same equipment. The document is intended as a companion to NFPA 790 (competency of third‑party field evaluation bodies).

General information

• Status: Current / Active.
• Publication date: 2024 (published/issued for the 2024 edition).
• Publisher: National Fire Protection Association (NFPA).
• ICS / categories: 29.020 — Electrical engineering in general (International Classification for Standards).
• Edition / version: 2024 edition (revises NFPA 791‑2021).
• Number of pages: Approximately 17 pages (compact recommended practice).

Scope

Defines recommended field‑evaluation procedures for unlabeled electrical equipment to determine acceptability relative to applicable nationally recognized standards and AHJ requirements. It does not establish a product certification program but describes inspection, test, documentation, and labeling practices for FEBs and guidance for AHJs on accepting FEB evaluation results. The scope includes treating multiple units of the same equipment, reporting of discrepancies and nonconformities, and conditions of acceptability.

Key topics and requirements

• Recommended inspection and construction‑inspection checklists for enclosures, wiring, field terminations, grounding, and overcurrent protection.
• Electrical testing procedures and acceptance criteria referenced to applicable nationally recognized standards.
• Reporting, documentation and engineering reports (required contents, discrepancies, conditions of acceptability).
• Guidance for evaluating multiple units of the same equipment (sampling and applicability).
• FEB labeling: label application, label contents, label location and label control procedures.
• Relationship to competency requirements for FEBs (companion to NFPA 790) and how AHJs should use evaluation results.

Typical use and users

Used by authorities having jurisdiction (AHJs), third‑party field evaluation bodies (FEBs), inspection/testing laboratories, product safety engineers, electrical inspectors, and facility engineering teams when equipment lacks third‑party listing/labeling. It informs acceptance decisions, on‑site evaluations, and FEB labeling processes.

Related standards

NFPA 790 (Standard for Competency of Third‑Party Field Evaluation Bodies) — companion standard for FEB competency; NFPA 70 (National Electrical Code) — referenced for installation requirements; applicable nationally recognized product standards (UL, IEC, etc.) used as the basis for evaluation. ANAB/field‑evaluation accreditation guidance maps to NFPA 790/791.

Keywords

Unlabeled electrical equipment; field evaluation; FEB; AHJ; inspection; electrical testing; FEB label; NFPA 790; NFPA 791; NFPA; product evaluation; reporting; documentation; electrical safety.

FAQ

Q: What is this standard?

A: NFPA 791 is a short recommended‑practice document that describes procedures for evaluating electrical equipment that is not listed or labeled by a recognized certification body, to help AHJs and FEBs determine acceptability.

Q: What does it cover?

A: Construction inspection checklists, electrical testing methods, reporting and documentation requirements, conditions of acceptability, FEB labeling rules, and guidance for sampling/evaluating multiple units — all framed to reference applicable nationally recognized product standards and AHJ requirements.

Q: Who typically uses it?

A: Authorities having jurisdiction (electrical inspectors, permitting officials), third‑party field evaluation bodies (FEBs), accredited inspection/testing labs, and facility or product safety engineers involved with unlisted or modified electrical equipment.

Q: Is it current or superseded?

A: The 2024 edition is current (it revises the 2021 edition). Users should confirm adoption status in their jurisdiction; NFPA periodically reconfirms or revises standards per its standards development cycle.

Q: Is it part of a series?

A: Yes — NFPA 791 is a companion to NFPA 790 (competency of third‑party field evaluation bodies). Together they form the common framework for FEB programs and field evaluations of unlabeled electrical equipment.

Q: What are the key keywords?

A: Unlabeled electrical equipment, field evaluation, FEB, AHJ, electrical inspection, electrical testing, FEB label, NFPA 790, compliance, reporting.