Gesa Credit Union — EV Charging & Transformer Design Basis

Client: Resound Energy & Gesa
Location: Multiple locations across Washington
Project Type: EV Charging & Transformer/Metering Design Basis
PE Stamp: WA PE 55998 • OR PE 108239PE

Project Overview

Gesa Credit Union needed a repeatable EV charging and transformer design basis that could be applied across multiple branches with different utilities. Each site required clear one-lines, transformer details, and metering arrangements suitable for plan review and utility coordination.

Engineering Approach

PNW Electrical Engineering developed a standardized template using BTC Gen4 chargers, the MS-XFR-26 transformer, and a primary-side metering cabinet (MS-PRI MTR-DF). This approach streamlined design and review across multiple sites.

Key Technical Highlights

• Multi-utility coordination and consistent design language.
• Standardized equipment across branches (BTC Gen4, MS-XFR-26, MS-PRI MTR-DF).
• PE-stamped one-lines tailored for utility and AHJ reviewers.
• Design ready for future expansion at additional branches.

Deliverables

• PE-stamped preliminary and final design packages.
• One-line diagrams.
• Equipment cut sheets.
• Conductor and feeder schedules.
• Voltage-drop and load evaluation documentation.