As you consider the electrical system survey for your facility, here is a suggested array of equipment to examine. Keep in mind that it ultimately falls upon personnel at your firm to make conclusive decisions concerning surveyed items. Automatic Transfer Switch (ATS) Air Circuit Breaker (ACB) Bus Duct (BUS) Capacitor (CAP) Circuit Breaker (CB) Control Cabinet (CC) Current Transformer (CT) Disconnect Switch (DISC) Distribution Panel (DP) Emergency Distribution Panel (EDP) Emergency Power Panel (EPP) Emergency Power Transformers (EXFMR) Environmental Control Unit (ECU) Fire Pump Panel (FPP) Generator (GEN) Incoming Lines (IL) Junction Box (JB) Lightning Arrestor (LA) Lighting Contactor (LC) Metering Cabinet (MET) Special electrical systems to consider for your aerial infrared survey. Incoming Equipment Substations Recommended frequency: every six months - adjust the schedule Transformers after reviewing any patterns that develop. Substations Transformers Overhead Lines Main Equipment Recommended frequency: every twelve months – survey more frequently depending on equipment history, problems located, and environmental concerns. Generators Automatic Transfer Switches Battery Banks Distribution Equipment Recommended frequency: every twelve months – survey more frequently depending on equipment history, problems located, and environmental concerns. Motor Control Centers Distribution Panels Laboratory Electrical Panels Loading Dock Electrical Panels Computer Electrical Panels HVAC Equipment