Stazione 25 — EV Charging Retrofit Using Existing Infrastructure

Client: Resound Energy
Location: Seattle, Washington
Project Type: EV Charging Retrofit
PE Stamp: WA PE 55998 • OR PE 108239PE

Project Overview

Stazione 25 needed a hybrid EV charging solution that reused existing branch circuits while adding new shared circuits. Several conduits were oversized or mismatched, requiring careful field verification.

Engineering Approach

PNW Electrical Engineering confirmed usable conductors, updated panel labeling, and created an EV layout that maximized the use of existing infrastructure while staying code compliant.

Key Technical Highlights

• Integration of existing branch circuits with new EV circuits.
• Field-verified conductor counts and conduit conditions.
• EV panel assessment and conductor derating checks.
• Optimized circuit grouping to meet NEC requirements.

Deliverables

• PE-stamped engineering submittal.
• One-line diagram.
• Updated panel schedules.
• Cable and conduit schedules.
• Voltage-drop worksheets.
• Site notes and clarifications for the installer.