NFPA 110, 8.4.2.3* states: “Diesel-powered EPS installations that do not meet the requirements of 8.4.2 shall be exercised monthly with the available EPSS load and shall be exercised annually with supplemental loads at not less than 50 percent of the EPS nameplate kW rating for 30 continuous minutes and at not less than 75 percent […]
Emergency Power Blog
Inspecting Automatic Transfer Switches
Several surveyors have cited healthcare facilities for not “inspecting” the automatic transfer switches during their weekly inspections. NFPA 110 only states, “EPSSs, including all appurtenant components, shall be inspected weekly and exercised under load at least monthly.” The “all appurtenant components” portion of paragraph 8.4.1 includes the automatic transfer switch (ATS). However, there is no […]