# NFPA 70E readiness checklist for UPS, switchgear & critical-power rooms

This checklist covers the safety rules that protect electricians from shocks and burns around a data center's big power equipment. NFPA 70E is the Standard for Electrical Safety in the Workplace, a consensus standard (not a license) that helps employers and workers reduce shock, electrocution, arc-flash and arc-blast injuries and assists with OSHA 1910 Subpart S / 1926 Subpart K compliance. Data-center electricians and facility techs who enter UPS, generator and switchgear rooms are commonly expected to have 70E-based training on top of a state electrical license. Use this printable checklist for qualitative readiness before a critical-power task; verify approach distances, incident energy and PPE against the current edition your employer uses and the labels on that gear.

**Not legal advice.** Educational checklist only, not a substitute for employer EH&S, NFPA 70E training, arc-flash study, EEWP, LOTO, or qualified-person judgment. Issuer: https://www.nfpa.org/codes-and-standards/nfpa-70e-standard-development/70e

Dataset row `nfpa-70e`: NFPA 70E, Standard for Electrical Safety in the Workplace (2027 edition) · National Fire Protection Association (NFPA) · retrieved 2026-11-05

Related: /cert-checker/#role-electrician, /cert-checker/#role-lineworker, /facility-systems/#power, /guides/epa-608/, /guides/liquid-cooling/, /facility-systems/#liquid-cooling

## Checklist
1. **Confirm the NFPA 70E edition your employer uses**: NFPA’s current edition is 2027 (issued 2026-04-16, effective 2026-05-06). Employer programs, labels, and training may still reference an earlier edition. Verify against the edition named in your electrical safety program; do not assume this page’s edition matches your site.
2. **Prefer an electrically safe work condition before opening critical-power gear**: NFPA 70E and OSHA electrical safe-work practice culture start with de-energizing, verifying absence of voltage, and locking/tagging out unless exposure to energized parts is justified. UPS, switchgear, generators, and PDUs in a live data hall are not “routine” exceptions by themselves.
3. **If work stays energized, document justification and an energized electrical work permit culture**: NFPA materials describe an energized electrical work permit (EEWP) when a person is within the limited approach boundary or interacts with equipment in a way that an arc flash is possible, even with doors closed. Establishing an electrically safe work condition itself involves electrical hazard exposure and is treated accordingly. Follow your employer’s permit form; this checklist is not a permit.
4. **Confirm you (and anyone crossing boundaries) meet the qualified-person bar**: OSHA defines a qualified person as someone who has received training and demonstrated skills and knowledge in the construction and operation of the electric equipment and the hazards involved (29 CFR 1910.399, cited in OSHA FS-4474). Host-facility badging alone is not the same as being qualified on that gear.
5. **Know the limited approach, restricted approach, and arc-flash boundaries for this task**: OSHA FS-4474 summarizes three boundaries from NFPA 70E: limited and restricted approach (shock) and the arc-flash boundary (thermal). Distances vary with voltage, equipment configuration, and condition; do not invent or memorize numbers from a blog. Read the arc-flash / shock labels on the equipment and the site risk assessment for this UPS, switchgear, or PDU. Unqualified workers must not cross the restricted approach boundary.
6. **Wear arc-rated and shock PPE that matches the employer risk assessment, not a guess**: Select PPE from the site’s arc-flash risk assessment and equipment labels for the task. Do not invent calorie ratings or PPE “categories” from memory. The 2027 edition tightened arc-rated PPE conformity expectations (supplier Declaration of Conformity alone is no longer enough per NFPA product notes). Verify garments, gloves, face/eye protection, and hearing protection against your employer’s current program.
7. **Use insulated tools and control conductive objects inside approach boundaries**: Qualified workers should not enter or take conductive objects within the restricted approach boundary unless using appropriate PPE and the conductive object is insulated (OSHA FS-4474 summary of NFPA 70E themes). Stage non-essential metal, jewelry, and uninsulated tools outside the work zone before opening gear.
8. **Coordinate lockout/tagout with the facility / host employer before touching energy isolation**: Critical-power rooms often have multiple energy sources (utility feed, UPS bypass, generator, battery strings, parallel switchgear). OSHA’s control of hazardous energy rule (29 CFR 1910.147) and the site LOTO procedure govern isolation. Confirm who owns the locks, who verifies zero energy, and how facility operations is notified before and after the outage window.
9. **For 2027-edition justified energized work: plan the additional person**: NFPA’s 2027 §130.2(A)(2) requires an additional person when justified energized work needs an EEWP and the risk assessment requires PPE. That person must be trained in contact release and remain outside the limited approach boundary or arc-flash boundary, whichever is greater, while observing. Update the electrical safety program if your site still assumes solo energized tasks.
10. **Treat UPS battery and other DC sources as their own hazard set**: The 2027 edition expands DC and battery safety guidance (including battery risk assessment themes covering contact, thermal, and chemical considerations). UPS rooms and battery strings are not “just AC switchgear.” Follow site battery procedures, PPE, and sectionalizing guidance; verify details in the edition your employer adopted.
11. **Brief contact release, rescue, and medical response before the task starts**: The additional-person rule exists so someone can respond immediately if an electrical injury occurs. Know how to release a victim from contact, where the AEDs and exits are, and who calls emergency services for this campus. Do not start justified energized work without that briefing.
12. **Read current arc-flash and shock hazard labels on the specific equipment**: Incident energy, working distance, and PPE guidance on a label are equipment- and study-specific. If labels are missing, outdated, or conflict with the work order, stop and escalate to the qualified person / EH&S owner. This checklist does not replace an arc-flash study.

## How to use this checklist
1. **Confirm edition and training currency**: Verify the NFPA 70E edition named in your employer’s electrical safety program and that your 70E / arc-flash training is current for that edition before entering the electrical room.
2. **Review the work order and energy sources**: Identify every energy source that can feed the UPS, switchgear, generator, or PDU you will approach: utility, bypass, generator, battery, paralleling gear, and who owns isolation.
3. **Plan for an electrically safe work condition**: Default to de-energize, verify absence of voltage, and LOTO with the facility. Treat energized exposure as justified only when the employer’s program says so.
4. **If energized work is justified, complete the EEWP path**: Use the employer’s energized electrical work permit process when work is inside approach boundaries or interaction could create an arc-flash exposure. Do not treat this web checklist as the permit.
5. **Read equipment labels and set boundaries / PPE from the site assessment**: Use posted arc-flash and shock labels plus the site risk assessment. Do not invent calorie ratings or boundary distances. Stage insulated tools and remove unnecessary conductive objects.
6. **Staff the additional person when 2027 conditions apply**: When an EEWP is required and PPE is required for justified energized work under the 2027 edition, assign a contact-release-trained observer who stays outside the farther of the limited approach or arc-flash boundary.
7. **Brief emergency response, then execute and restore**: Confirm rescue, AED, and medical call-out. After the task, restore LOTO/energy state per procedure and notify facility operations.

## FAQ
**What is NFPA 70E?** NFPA 70E is the Standard for Electrical Safety in the Workplace. NFPA developed it at OSHA’s request to help employers and workers reduce shock, electrocution, arc-flash, and arc-blast injuries and to assist with complying with OSHA 1910 Subpart S and 1926 Subpart K. It is a consensus standard, not a government license.

**Is NFPA 70E a license or a national exam?** No. It is not a state electrical license and there is no single national “70E exam fee.” Employers use the standard in their electrical safety programs; “70E training” is delivered by employers or training providers.

**Why do data-center critical-power techs care?** UPS systems, generators, switchgear, and PDUs can present shock and arc-flash hazards. Facility and contractor electricians who enter electrical rooms are commonly expected to have NFPA 70E-based electrical-safety training in addition to a state electrical license.

**When is an energized electrical work permit needed?** NFPA public guidance describes an EEWP when a person is within the limited approach boundary or interacts with equipment such that an arc flash is possible, even if the equipment is closed. Establishing an electrically safe work condition also involves electrical hazard exposure. Follow your employer’s written program.

**What changed in the 2027 edition for energized work?** Section 130.2(A)(2) requires an additional person when justified energized work needs an energized electrical work permit and the risk assessment requires PPE. That person must be trained in contact release and remain outside the limited approach or arc-flash boundary, whichever is greater.

**Can this checklist replace my employer’s arc-flash study or PPE table?** No. Approach distances, incident energy, and PPE selections come from the employer’s risk assessment, equipment labels, and the NFPA 70E edition the site adopted. This page is a readiness checklist only, not legal advice and not a substitute for qualified-person judgment.

## Sources
- NFPA 70E, Standard for Electrical Safety in the Workplace (development / current edition): https://www.nfpa.org/codes-and-standards/nfpa-70e-standard-development/70e (retrieved 2026-11-05)
- NFPA blog: two-person requirement for justified energized work (2027 edition §130.2(A)(2)): https://www.nfpa.org/news-blogs-and-articles/blogs/2026/06/12/nfpa-70e-change-two-person-requirement-for-energized-work (retrieved 2026-11-05)
- NFPA blog: when an energized electrical work permit is required: https://www.nfpa.org/news-blogs-and-articles/blogs/2024/09/30/when-is-an-energized-work-permit-required (retrieved 2026-11-05)
- OSHA Fact Sheet FS-4474: Establishing Boundaries Around Arc Flash Hazards (Nov 2024): https://www.osha.gov/sites/default/files/publications/OSHA4474.pdf (retrieved 2026-11-05)
- OSHA 29 CFR Part 1910 Subpart S, Electrical (eCFR): https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-S (retrieved 2026-11-05)
- OSHA 29 CFR 1910.147, The control of hazardous energy (lockout/tagout): https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-J/section-1910.147 (retrieved 2026-11-05)