National Fire Protection Association
NFPA 110
NFPA 110 governs emergency and standby power systems: how a generator set is installed, exercised and tested so it starts when the utility does not. Most of what a technician records monthly and annually comes from here.
Adoption varies by jurisdiction — confirm the edition your authority having jurisdiction enforces before you run a walk against it.
What it covers
- Generator installation and level classification
- Exercise intervals and load requirements
- Transfer switch operation and timing
- Fuel supply condition and record keeping
What the evidence looks like
- Run hours and load readings photographed on the controller.
- Transfer test documented with the time to transfer captured.
- Fuel level, coolant and battery condition shown, not summarised.
Checklists that verify work against NFPA 110
2 free checklists, each with the photo every item needs before it can be submitted.
Standby generator set QuarterlyStandby generator set quarterly maintenance checklistFluids, batteries and an off-load run test on the standby set7 items9 photosStandby generator set AnnualStandby generator set annual maintenance checklistFull load bank test, coolant system service and transfer switch exercise7 items12 photos
Common questions
- What is NFPA 110?
- Emergency and standby power systems — the generator's exercise and test regime. It is published by the National Fire Protection Association. NFPA 110 governs emergency and standby power systems: how a generator set is installed, exercised and tested so it starts when the utility does not. Most of what a technician records monthly and annually comes from here.
- What does NFPA 110 cover?
- Generator installation and level classification; Exercise intervals and load requirements; Transfer switch operation and timing; Fuel supply condition and record keeping.
- What does a field inspection against NFPA 110 look at?
- Run hours and load readings photographed on the controller. Transfer test documented with the time to transfer captured. Fuel level, coolant and battery condition shown, not summarised.
- Which edition of NFPA 110 applies to my project?
- Adoption varies by jurisdiction — confirm the edition your authority having jurisdiction enforces before you run a walk against it.
- Which checklists verify work against NFPA 110?
- 2 free checklists in the RTI library reference this family — each listed on this page with the photo evidence every item needs before it can be submitted.
A standard is only met if the evidence exists
RTI holds the submit button until every mandatory item is answered and the photos are attached, then chains the record so it can be proven untouched later.
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