NFPA 70 — the National Electrical Code (NEC) — is the most widely adopted electrical standard in the United States. It defines requirements for electrical installation safety across all building types. For healthcare and mission-critical facilities, Article 517 (Health Care Facilities), Article 700 (Emergency Systems), Article 701 (Legally Required Standby Systems), and Article 708 (Critical Operations Power Systems) impose additional requirements beyond standard commercial wiring.
We audit electrical system compliance with a focus on the articles that intersect with emergency power and life safety — the same systems AHJ inspectors and CMS surveyors prioritize during facility evaluations.
What the NEC Covers
The NEC covers the installation of electrical conductors, equipment, and raceways in virtually every building type. It is organized by article — general requirements in Articles 100–490, special occupancies in Articles 500–590, special equipment in Articles 600–695, and special conditions (including emergency power) in Articles 700–770. Each jurisdiction adopts a specific edition, and the adopted edition may lag the current publication by one or two cycles.
For compliance purposes, the critical articles are 517 (healthcare facility wiring, grounding, and receptacle requirements), 700 (emergency system wiring that must be independent of all other wiring), 701 (legally required standby systems), and 708 (critical operations power systems for facilities like 911 centers). These articles define how emergency power wiring must be installed, separated, and protected — requirements that interact directly with NFPA 110 and NFPA 99.
Critical Articles for Facility Compliance
Article 517 requires a specific grounding scheme in patient care areas. Receptacles in patient care vicinities must be connected to an equipment grounding conductor of a type recognized in Section 250.118 and must be tested for ground impedance. The maximum impedance from any patient care area receptacle to the ground bus in the panel cannot exceed specified limits. This is tested with a ground impedance tester — not a standard receptacle tester.
Article 700 requires emergency system wiring to be completely independent of all other wiring. Emergency circuits cannot share raceways, cables, boxes, or cabinets with any other wiring. Transfer equipment must be automatic and listed for emergency service. These requirements extend to the physical separation of wiring — a common finding during inspections where emergency and normal wiring share the same raceway due to later additions by electricians who were unaware of the separation requirement.
The Emergency Circuit That Wasn't Separated
During a routine AHJ inspection at a 150-bed hospital, the inspector opened a junction box in a ceiling space and found emergency circuit conductors sharing a raceway with normal power conductors. Article 700 of the NEC requires complete separation. The electrician who installed new normal-power wiring two years earlier had pulled conductors into the nearest available raceway — which happened to be the emergency circuit raceway.
Result: The AHJ issued an immediate violation. The hospital had to trace the entire circuit path to identify all shared raceways, then re-route either the emergency or normal conductors into separate raceways. The project required ceiling access across two floors and cost $62,000. The finding also triggered a review of all emergency circuit pathways in the facility.
NEC Article 700 separation requirements apply permanently. Every time normal wiring is added or modified near emergency circuits, there is a risk of introducing a sharing violation. We audit circuit separation as part of our electrical compliance review and recommend labeling and access controls that prevent future violations.
How We Help
We audit your facility against the specific requirements of this standard, identify every documentation and system gap, and build the compliance program that proves ongoing compliance at every inspection cycle.