- weekly visual of all components including batteries and all ATS’s
- monthly test under load for 30 minutes excluding cool down time
- annual load bank with 50% load at 30 minutes and 75% load for 60 minutes NOTE: This only applies if 30% load or manufacturer’s recommended exhaust temp is not met during any of the monthly tests
- four-hour triennial test at 30% load
Reference NFPA 110: Standard for Emergency and Standby Power Systems (2010) Chapter 8 for a full list of Inspection, Testing, and Maintenance (ITM) activities.