Trace the stated emergency or standby power system through one-line diagrams, equipment schedules, load references, transfer arrangements, room or enclosure plans, and controls. Groundbook can flag document conflicts using a supplied NFPA 110 reference for qualified review.
What does NFPA 110 cover?
NFPA 110 is the Standard for Emergency and Standby Power Systems. NFPA describes a standard addressing emergency and standby power systems that supply selected circuits when normal electrical power fails, including power sources, transfer equipment, controls, and related components.
NFPA’s official NFPA 110 page identifies the 2025 edition as current when checked on September 30, 2026. Confirm the edition, local amendments, and project scope that actually govern the work. The publisher’s newest edition does not establish local adoption.
Confirm which systems the project requires and the designer’s stated classification and performance basis. A “backup power” note alone is incomplete. Do not assume that every fire protection load uses the same supply arrangement; coordinate any fire pump interface with its responsible designer.
Bring electrical diagrams and physical receiving details
Collect the electrical one-line, generator and transfer equipment schedules, selected product data, load references, control descriptions, specifications, and room or enclosure plans. Add structural support information and the mechanical, fuel, exhaust, and ventilation documents applicable to the chosen installation.
Identify selected options and revision status. A generic equipment sheet may describe several configurations and cannot establish which one the design uses. Resolve differences between the scheduled selection and diagram before interpreting receiving-service requirements.
Trace the power system and its building interfaces
| Review question | Sources to compare | Decision to record |
|---|---|---|
| System basis | Design narrative, specifications, equipment descriptions | Ask the designer to resolve inconsistent classification or performance statements. |
| Source and transfer | One-line, generator schedule, transfer schedule, product data | Match identifiers and selected configurations across the package. |
| Supplied loads | Circuit and panel references, load documents, one-line | Identify disconnected references or changed selections for electrical review. |
| Physical installation | Room or enclosure plan, equipment dimensions, support details | Reconcile receiving geometry, access information, and structural interfaces. |
| Supporting services | Selected source data, fuel, exhaust, ventilation, and electrical plans | Confirm the drawings describe services appropriate to the selected installation. |
| Controls and records | Operating narrative, interface schedules, testing and handover references | Resolve different stated behavior and make missing evidence explicit. |
Use the electrical document checklist to trace connected equipment, and the equipment schedule checklist to reconcile selections across disciplines. UPS and battery sources follow the NFPA 111 stored energy guide, and the wider distribution follows the NFPA 70 electrical guide. In hospitals and other health care facilities, the essential electrical system also connects to the NFPA 99 health care guide.
Example: the equipment selection changed after the room design
Hypothetical example. The generator schedule is revised to a different selected package, while the enclosure layout and mechanical services still cite the previous selection. The one-line retains an earlier generator identifier.
The revised generator selection does not match the enclosure, supporting-services documents, and one-line identifier. Please confirm the intended package and coordinate every dependent electrical and building reference.
The electrical and receiving-discipline designers confirm the selection and assess the affected design inputs. Backcheck the revised one-line, schedules, physical installation details, and services. Matching tags alone cannot establish that the selected system performs as required.
Review emergency power interfaces with Groundbook
Upload the current project PDFs and relevant specifications to Groundbook. Identify the governing issues and add the applicable NFPA 110 reference from a copy you are licensed to use, where the license permits uploading it. State the edition, amendments, review area, and known exclusions in your instructions.
Trace the selected emergency or standby source through transfer equipment, supplied-load references, room or enclosure details, controls, and supporting services. Flag conflicting selections and missing interfaces. Cite both sources and applicable supplied NFPA 110 reference.
Verify each equipment identity and governing issue in Groundbook’s source-linked findings. Have the responsible designers classify the discrepancy, confirm any changed technical inputs, and update the complete receiving package before closure.
Document review does not validate generator sizing, starting performance, fuel duration, transfer behavior, or physical acceptance tests. Those decisions require the applicable design analysis and qualified verification.