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125 Amp Garage Subpanel Installation in Wilmington, NC
Touchstone Electric’s Raleigh branch completed a professional 125 amp garage subpanel installation for homeowner Joseph Novotny in Wilmington, NC. Led by technician Francisco Martinez, this upgrade was designed to safely expand circuit capacity where the main panel was already full, while keeping the project compliant with current code and local permitting requirements.
Completed on 2026-08-07, this project is covered by our lifetime craftsmanship warranty for peace of mind and long-term reliability.
Why Install a 125A Garage Subpanel?
When a home’s main panel is at capacity—especially when it already contains multiple tandem breakers—adding circuits for a workshop, EV charger, lighting, or future projects can be difficult and unsafe without additional space. A 125A subpanel provides room to grow while keeping circuits neatly organized and properly protected.
For this Wilmington home, the main panel was full with three tandems. Installing a dedicated subpanel in the garage created code-compliant expansion capability without overloading the existing spaces in the main panel.
Scope of Work
Our Panels & Service Upgrades team completed a turnkey subpanel installation with permitting and clear documentation. Key elements included:
- Feeder Breaker: Installed a 125A, 2-pole breaker in the 200A main panel to safely supply the new subpanel.
- Feeder Cable: Ran SER 2/0, 4‑wire service-entrance cable from the main panel to the garage subpanel to provide a dedicated, properly sized feeder.
- Subpanel: Installed a midsized indoor subpanel (12/24 spaces, up to 125A) to support current and future circuits.
- Permitting: Secured the required permit and coordinated the project in accordance with local requirements in Wilmington.
- Documentation: A liability waiver was signed to acknowledge potential overloading risks, consistent with project conditions and our safety protocols.
- Craftsmanship Warranty: Backed by our lifetime craftsmanship warranty on our work.
Code and Inspection Considerations
As inspectors in North Carolina continue implementing NEC 2020 requirements, some projects may require upgrading certain circuits to AFCI protection. In some homes, installing AFCI breakers can reveal preexisting wiring conditions—such as shared neutrals—that may cause nuisance tripping until corrected. Tracing and resolving shared neutrals or other legacy issues can require additional diagnostic time depending on the situation.
Our team communicates these possibilities up front so homeowners understand potential next steps during or after inspection. The goal is a safe, code-compliant system that supports both today’s needs and tomorrow’s upgrades.
Benefits for Wilmington Homeowners
- Added Capacity: Frees up space when the main panel is fully loaded with tandems.
- Project Flexibility: Supports new garage circuits, tools, EV charging, and lighting expansions.
- Safety & Compliance: Properly sized feeder and protected subpanel aligned with permitting and inspection requirements.
- Future-Ready: Organized layout simplifies maintenance, troubleshooting, and future additions.
Local Service You Can Trust
Touchstone Electric proudly serves the Wilmington area from our Raleigh branch, focusing on Panels & Service Upgrades and expert subpanel installation. Homeowner Joseph Novotny praised our work with a Google review—see it here: Read Joseph’s review on Google.
If you’re planning a garage subpanel or a broader panel upgrade in Wilmington, our licensed team can assess your load needs, handle permitting, and deliver a clean, code-compliant installation backed by our lifetime craftsmanship warranty.