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NFPA 70E · 2027

NFPA 70E for Data Centers
What Changed in 2027NEW
105 · Employer & Employee Responsibilities
110 · General Requirements
120 · Establishing an ESWC
130 · Work Involving Electrical Hazards
Ch. 2 · Safety-Related Maintenance
Ch. 3 · Special Equipment
360 · Batteries & Battery Rooms

Look It Up · Tools

⚡ SafePath · Decision WalkerSTART
SafePath Tables
Arc Flash Boundary
PPE Category Selector
Source Isolation Mapper (2N)
Energized Work Permit Builder
Battery Hazard Threshold Check
OSHA ↔ 70E Crosswalk
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OSHA 1910

General Industry overview
Subpart S · Electrical
1910.147 · Lockout/Tagout
Subpart I · PPE
Subpart D · Walking-Working Surfaces
1910.146 · Confined Spaces
General Duty Clause & 70E

OSHA 1926

Construction overview
Subpart K · Electrical
Subpart M · Fall Protection
Subpart CC · Cranes
Multi-Employer Worksites
Energization & the Live Boundary

NFPA 70 · NEC

NEC for data centers
Art. 645 · IT Equipment
110.26 · Working Space
Art. 708 · COPS
Art. 480 · Stationary Batteries

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Switchgear & ATS rooms
UPS rooms
Battery rooms
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Instructor · Rick Hauf, CSP

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Mission Critical Safety — US NFPA 70E, NFPA 70, NFPA 855 and OSHA, applied to data centers. Written by Rick Hauf, CSP.

This site is an interpretation of published consensus standards and federal regulations, not a substitute for them. Nothing here is an engineering study, and no incident energy value, boundary or PPE category on this site applies to your specific equipment. Always work from your own arc flash study, your employer's electrical safety program, and the published standard. NFPA 70E® is a registered trademark of the National Fire Protection Association. This site is not affiliated with or endorsed by NFPA or OSHA.