SAMPLE PV: One-line Diagram (Residential/Small Commercial) - A ...

SAMPLE PV: One-line Diagram (Residential/Small Commercial) - A “Line-Side” Connection ##A

Dedicated PV AC Combiner Panel ###A, ###VAC

Existing Utility-Owned Service Transformer

##A

##kVA

##A

##A DC Combiner Panel 1 ###A, ###VDC

##A

XYZ Co. Model A Inverter ##kWAC, ###VAC

Existing Utility Revenue Meter Socket (New Net Meter)

##A

##A Line-Side Connection Junction Box

Customer-Owned PV Production Meter ###A, ###VAC

##A DC Combiner Panel 2 ###A, ###VDC

XYZ Co. Model B Inverter ##kWAC, ###VAC

Interior AC PV Disconnect Switch ###A, ###VAC (Service Main Disconnect 2 of 2)

###A

##A Exterior AC Utility Disconnect Switch ###A, ###VAC (Located Adjacent to Utility Meter)

##A DC Combiner Panel 3 ###A, ###VDC

###A

XYZ Co. Model C Inverter ##kWAC, ###VAC

Notes: (As Appropriate) Customer Information Customer Name Note about all Service Main Disconnects being grouped and adjacent. Project Address Note about all Service Main Disconnects rated as suitable for use as service equipment. Notes about photovoltaic modules, ratings, and string sizes. Notes about wire sizes, conduits, equipment grounding, equipment ratings, and locations. Revision Information Date of Revision 1 Notes about language for permanent plaques. Date of Revision 2 Other Notes. © 2013 National Grid - This sample one-line diagram is only a possible representation of a typical solar photovoltaic generating system connected to the National Grid electric power system.

Existing Main Breaker (Service Main Disconnect 1 of 2)

Existing Main Distribution Panel ###A, ###VAC

Engineering Information Engineer Name Contact Information

PE STAMP Date of most recent stamp