Are you installing electrical service? We can help you get plugged in. Before you start the process, please review the links below for guidance and instructions on electric service requirements.
The new 2022 Electric Service Requirements Manual superseded all previous editions. The requirements in this new edition will be enforced for any installation made after February 1, 2022.
Equipment specifications
ESR White Papers
Rocky Mountain Power outlines customer responsibilities and design requirements for vault and alcove installations housing Rocky Mountain Power (company)-owned electrical equipment (transformers, switchgears, etc.). Before designing a customer-owned equipment room, please review the following policy:
Rocky Mountain Power requires developers to install primary and secondary conduit systems per the following Underground Conduit System Installation Guide. Before beginning an underground installation, please read this installation guide.
Please do not install an underground primary or secondary conduit system without first receiving a job sketch from the Power Company.
Related documents:
Questions and comments about the Underground Conduit System Installation book or related links can be submitted to esrfeedback@pacificorp.com
Vault suppliers, please review our detailed vault requirements for underground distribution systems.
If you are a vault manufacturer, and your company wishes to become a PacifiCorp-approved vault supplier, see the detailed vault requirements defined in PacifiCorp’s Underground Material Specifications posted below, and send an email to esrfeedback@pacificorp.com with:
Procedure 251 - Padvault Manufacturer Approval Process
GV 001 Equipment Bases and Enclosures – General Information
ZG 301 General Equipment Base and Enclosure Requirements
ZG 501 Padvault – Single-Phase Residential, 4'x4' (48"x48")
ZG 521 Padvault – Three-Phase Transformer
ZG532 Flat pad – Three-Phase Transformer
ZG 551 Padvault – Three-Phase Fusing Cabinet
ZG 562 Padvault – 7’ x 12’ (94” x 155”), for 600-Amp, Deadfront Switchgear
ZG 616 Padvault – 4' x 6' (48" x 72")
ZG 621 Padvault – 5'x7' (56”x 84”), for Three-Phase, Sectionalizing Cabinets and Metering
ZG 622 Padvault – 7-Foot by 9-Foot (84"x108"), for Three-Phase, 15kV Padmounted Switchgear
ZG 631 Manhole – 7-Foot by 7-Foot (84”x 84”)
ZG 641 Vault – Shallow, 7-Foot by 7-Foot (84” x 84”)
ZG 701 Manhole – 7-Foot by 12-Foot (94" x 155")
ZG 711 Vault – Shallow, 7' x 12' (94" x 155")
ZG 715 Sleeve – 15, 25 and 35 kV, 600-Amp, Deadfront Switchgear, Padvault
When creating a vault, approved suppliers shall also follow local waste control and compaction regulations for the installation location.
Below are current qualified vault suppliers and their contact information:
