Builders & Developers  

Electric Standards


General Standards

ER Number Electric Standard
ER 4-200-B pdf document Distributed Resource Generation, Net Metered
ER 4-250 pdf document Distributed Resource Generation, Feed-In Tariff, Single Phase
ER 4-300-C pdf document Distributed Resource Generation, Feed-In Tariff, Three Phase
ER 5-500-D pdf document Entrance Equipment
ER 5-550-C pdf document Entrance Run
ER 6-100-B pdf document Facility Modifications, General
ER 7-500-E pdf document Grounding
ER 13-250-A pdf document Meter-Handling, Service Entrance Upgrade
ER 13-260 pdf document Meter-Shut Off & Removal
ER 13-280 pdf document Meter Socket - Transformer Rated Application
ER 13-500 pdf document Motors - General
ER 13-510 pdf document Motors - Auxiliaries
ER 13-560 pdf document Motors - Starting Current
ER 16-600-C pdf document Power Quality, Customer Electric
ER 18-700 pdf document Rural Farm Service
ER 19-900 pdf document Standard of Work
ER 19-925 pdf document Substation-Maintenance, Customer Owned
ER 22-200 pdf document Voltage Drop
ER 22-500-C pdf document Voltage-Service, Availability



Service Install and Meter Equipment Approval

ER Number Electric Standard
ER 3-100-C pdf document Cabinet – Current Transformer 400 A. Max.
ER 3-110-C pdf document Cabinet – Current Transformer, 240 V., 800 A. Max.
ER 3-120-D pdf document Cabinet – Instrument Transformer, 480 V., 400 A. Max.
ER 3-130-D pdf document Cabinet – Instrument Transformer, 480 V., 800 A. Max.
ER 3-140-E pdf document Cabinet – Instrument Transformer, 480 V, 1200, 1600 & 2000A
ER 3-150-B pdf document Cabinet – Instrument Transformer, 480V-400 A Max.. 1PH
ER 13-210-B pdf document Meter-Installation, Pad Mount Transformer
ER 13-230-D pdf document Meter Location
ER 19-150 pdf document Service-Electric Plug In Vehicle, Sub Meter Socket Installation 
ER 19-210-F pdf document Service Entrance – CATV, 1PH, 2 Wire, 120 Volts
ER 19-220-G pdf document Service Entrance – GROUP, 7 or More Positions, Socket Breaker, Combination
ER 19-225-G pdf document Service Entrance – GROUP, Multiple Position, Socket Breaker, Combination
ER 19-230-G pdf document Service Entrance – GROUP, Horizontally Ganged, 2-6 Position
ER 19-235-H pdf document Service Entrance – GROUP, 2-6 Position, Socket, Breaker Combination
ER 19-236-B pdf document Service Entrance – Indoor/Outdoor, Meter Socket/Main Breaker
ER 19-238-A pdf document Service Entrance Manufactured (Mobile) Home
ER 19-240-I pdf document Service Entrance – Overhead, Single & Three Phase
ER 19-245-B pdf document Service Entrance – Overhead, 100, 200, or 320 Amperes, Self
ER 19-255-B pdf document Service Entrance – Overhead, Transformer Rated
ER 19-265-G pdf document Service Entrance – Underground,100,200,OR 320 Amperes
ER 19-266-C pdf document Service Entrance – Underground,100 OR 200 AMPS
ER 19-270-M pdf document Service Entrance – Underground, 200 & 320 Amperes Service
ER 19-280-B pdf document Service Entrance – Underground, Transformer Rated
ER 19-285-F pdf document Service General, Residential, Commercial, Industrial
ER 19-290-B pdf document Service Overhead, Attachment, Customer's Premises
ER 19-310-A pdf document Service Temporary, Single Phase, 120 or 120/240 Volts