Tandem Breaker Installation in Cary - Panel Upgrade for EV Charging

EV‑Ready Panel Space Created with Tandem Breakers in Cary

On August 10, 2026, our Raleigh branch completed a focused panel optimization in Cary, NC for homeowner LInhan Mao. Lead technician Gustavo Peralta installed two 15A tandem breakers to free up space in the existing load center, preparing the home for a future EV charging circuit. This job falls under our Panels & Service Upgrades and Circuit Breaker Repair & Replacement services.

By strategically consolidating standard branch circuits onto listed tandem breakers, the panel now has open capacity reserved for a dedicated EV charger circuit—helping the homeowner move forward with electrification plans while maintaining safety and compliance.

Why Use Tandem Breakers for EV Charging Plans?

Tandem (or “double-stuff”) breakers allow two separate 120V circuits to occupy the space of one full-size breaker. When the panel is listed and labeled to accept them, tandems are a code-compliant, cost‑effective way to create room without replacing the entire panel.

• Creates space for a future 240V EV charging circuit without a full panel change.
• Efficient and minimally invasive solution that preserves existing equipment when appropriate.
• Code-conscious approach when installed only in positions specifically designated for tandem use by the panel manufacturer.

Not every panel accepts tandem breakers. Our team verifies compatibility and labeling before recommending this path.

Scope of Work Performed

• Verified panel condition, labeling, and manufacturer allowances for tandem breaker positions.
• Installed 2 × 15A tandem breakers serving standard branch circuits to consolidate space for an upcoming EV charger.
• Secured terminations to manufacturer torque specifications and neatly dressed conductors for clear separation.
• Updated the circuit directory to reflect new breaker locations and designations.
• Reinstalled the dead front, confirmed proper breaker operation, and performed final safety checks.
• Reviewed our standard liability waiver with the homeowner as part of the project documentation.

The result: an open, full-size breaker position reserved for a dedicated EV charging circuit installation when the homeowner is ready to proceed.

Planning the Future EV Charger Circuit in Cary

With space now available, the next step is to select the right charging equipment and dedicated circuit size. Our electricians can help you plan a safe, efficient installation that follows the North Carolina Electrical Code and local permitting requirements.

• Load calculations: We evaluate service capacity and continuous loads before adding a new EV circuit.
• Circuit sizing: A dedicated 240V circuit is sized for the EVSE’s nameplate rating and continuous load rules.
• AFCI/GFCI requirements: Applied per code and location (such as garages or outdoors).
• Permits and inspections: We follow local processes so the installation can be inspected where required.
• Clear labeling: New EV circuits are identified at the panel for easy operation and future service.

If your existing panel cannot accept tandems or service capacity is limited, we can review options such as a subpanel or a full service upgrade to support present and future electrification needs.

Local Raleigh Team Serving Cary

Touchstone Electric’s Raleigh branch provides prompt, professional electrical service throughout Cary. From breaker replacements to panel upgrades and EV charging solutions, our licensed technicians focus on safe, clean workmanship and clear communication at every step.

When a Panel Upgrade May Be the Better Choice

While tandem breakers are a practical way to free space, some homes are better served by a larger upgrade. Consider a panel or service upgrade if:

• Your panel is not listed for tandems or has no remaining tandem positions.
• Frequent nuisance tripping, signs of heat, rust, or damage are present.
• You plan multiple future loads (EV charging, heat pump, workshop tools) beyond current capacity.
• Your main service is undersized for anticipated electrical needs.

We’ll help you compare options so you can choose the safest, most cost‑effective path for your home.

Need Space in Your Panel for an EV Charger?

If you’re in Cary and planning to add EV charging, Touchstone Electric can evaluate your panel and create capacity the right way. Ask our Raleigh team about tandem breaker solutions, subpanels, or full upgrades tailored to your goals.