Electric Service Requirements (ESR)

Standards for materials and construction.

The information contained on this page comprises the Electric Standards Requirements book distributed by TEP as a reference and a guide for regulations and practices regarding the connection and supply of electric service.

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Online ESR

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Copyright Notice (Proprietary Material)
Comment Form
Summary of Revisions – 2016
Additions and Revisions – Monthly


General Information – 100

1.00Title Blocks and Logos
1.01Important Telephones and Numbers
1.01New Construction Offices
1.01Customer Service
1.01AUES-Nogales Contact Numbers
1.01AUES New Construction Offices
1.01AUES Nogales Customer Service

Application for Service

1.04-1.05Type of Service & Limitations
1.06Preliminary Notification
1.06Obtaining Information
1.06Removal of Facilities
1.06Service Scheduling
1.07Government Contacts
1.13Residential/Commercial New Construction Application
1.13AService Removal Request
1.14Answers to Commonly Asked Questions
1.15Outline for Project Completion - Residential
1.16Outline for Project Completion - Commercial

Customer Information

1.17Codes and Regulations
1.17Customer Installations
1.17Access to Premises
1.17Employee Identification
1.18Employee Compensation
1.18Protection of TEP Property
1.18Design of Customer's Equipment
1.19One Call/Access

Customer Installation

1.20-1.21Customer Installation of Standby and Alternate Generation Sources
1.22ESRs for Small Interconnected Distributed Generation Sources
1.23ESR for Medium-Sized Commercial Interconnected Distributed Generation Sources
1.24Unmetered Energy
1.24Resale of Energy
1.24Attachments to TEP Facilitites
1.24Access to Pad Mounted Equipment
1.24Trimming Trees

Misc. Requirements

1.25Prior to Excavation
1.25High-Voltage Power Lines and Safety Restrictions
1.25Damage to TEP Facilities
1.25Grade Changes
1.25Relocation of Electric Facilities
1.25Power Outage Request
1.26Requirements For Easement Legal Descriptions

Line Extensions/Civil – 200

Line Extensions – General
2.01Overhead and Underground Line Extensions
2.02Additional Charges
 New Subdivisions — Provisions for Service
2.03Ducts for Road Crossing
Single-Phase Underground Line Extensions
Three-Phase Underground Line Extensions
205Duct and Concrete Installation
207Trench, Backfill
208Site Preparation for Equipment Pads on Sloping Grades
209Trenching, Underground Residential Distribution (URD)
210Sleeve Installation
212Trench and Duct Encasement, Drainageway Crossings
215Trenching 2.5-inch, 4-inch, and 6-inch Duct Installation
218Duct Stub Detail
220Underground Riser, Customer Installed
221Riser Details — TELCO/CATV/CAP
225Distribution Pullbox with Manhole
226Pullbox 15 kV with Lid (Reference Only)
230Equipment Barrier, Protective
232Excavation and Duct Placement for 3Ø Fused Junction Cabinet (F2)
233Transformer Pad Underground 3Ø
234Excavation and Duct Placement for 3Ø Junction Cabinet (J2)
235Excavation and Duct Plasement for 1Ø Junction Cabinet (J1)
240Box Pad Installation
241Capacitor Installation
242Gas Insulated Switch Installation

Services – 300

3.01Load Balancing
3.01Typical Service Entrances
3.01Socket Wiring

Electric Service Lines

3.01Overhead Service Lines
3.01Underground Service Lines
3.01Service Trenches
304Overhead or Underground Service and Meter Location
305Service Entrance with Conduit Riser Overhead
307Service Entrance on a Pole
308Single-Phase 401A-600A, Three-phase Underground Service from Overhead, 600A
308ASingle-phase Underground Service from Overhead, 0-400A
309Three-phase Underground Service from Pad-mounted Transformer
310Service Entrance Underground
312Trenching, Service Single-phase
314Service Entrance Temporary, Underground

Metering Installations – 400

405General Requirements
 Requirements for Residential Socket Interiors
 Meter Enclosures and Clear Working Space
408Residential or Commercial (Restricted) Service 0-100A, 3W, 1Ø, Overhead and 0-30A, 2W, 1Ø Overhead or Underground
 Residential Overhead Service, 3W, 1Ø, 101-200A
 Residential Underground Service, 3W, 1Ø, 0-200A
 Residential Service, 3W, 1Ø, 0-200A Combination Meter Socket and Distribution Section
 Meter Post - Underground Service to Mobile Home
409Non-residential Service Pedestal (including Traffic Signals) 0-200A/0-600V
410Commercial Service, 3W or 4W, 1Ø and 3Ø, 0-200A
412Residential or Commercial Service, 3W, 1Ø, 201-400A
414Socket Requirements - 1Ø w/Instrument Transformers
414Socket Requirements - 3Ø w/Instrument Transformers
418Residential and Commercial Multi-Metering Installations
420Meter Protective Cabinets
422Current Transformer Installations in Cabinets
423Meter Socket and Conduit Installation Detail for Primary Metered Service
424Remote Meter Cabinet for primary metered service, 201 - 800A
425Terminating Box or Section
426Combination Terminating Box and Main Disconnect
430Current Transformer Installations in Switchgear
431Metering Remote
432Low Profile Switchboards
433CT Compartment, 401-800A, 1Ø
434CT Compartment, 201-1000A, 3Ø
435CT Compartment, 1001-3000A, 3Ø
436CT Compartment, 3001A-4000A, 3Ø
437Enclosed Meter Panel in Raintight Switchgear
438Switchboard Meter Panels
439Removable Bus Links and CT Supports
451Primary Metering Overhead and Underground
452Approved Metering and Service Equipment
453Grounding and Bonding

Short Circuit Protection – 500

510Short Circuit Protection

GIS Land Drawings – 600

601Single Phase Underground
601Three Phase Underground

Distributed Generation Interconnection Requirements (DGIRs)

View and download the DGIRs.