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The purpose of this sample one-line diagram is to show a PV system with battery backup. Please note, a battery backup system will reduce REC production. One Line Diagram Example 120 Vac Output will disconnect internally upon loss of utility 60 Hz signal Inverter Manufacturer Battery Backup House Main Service* REC Customer Generation Disconnect (CGD) Meter Billing Meter Manufacturer M Model number 120 Vac Output Model Number Output does not require 60 Hz signal from utility #, # k. W AMP rating M • Load break • Lockable To utility • Visible disconnect • Utility accessible switch Battery Solar Generator Manufacturer Model number #, # AMP hours #, # k. W House Service* Panel #2 * House Main Service and House Service Panel #2 cannot be tied together in an outage. Transfer Switch Components and connections shown are for illustrative purposes only 1. This illustrative sketch is not intended to specify utility interconnection or safety requirements. 2. This illustrative sketch is not intended to provide electrical design or code compliance directives. 3. Some components and connections shown may be internal to the inverter. The manufacturer and model number of the inverter must be shown on the drawing. 4. All switches, fuses, and mechanical interlock mechanisms which are part of the operating scheme to isolate the customers generating equipment from the utility during emergency or maintenance conditions must be shown on the single-line diagram. 5. The narrative description accompanying the single line interconnection diagram must contain sufficient detail to determine if the components in, and the operation of, the interconnection and protection systems meet the utility’s interconnection and safety requirements.