200 Amp Electrical Panel Upgrade Project — Raleigh, NC
This project documented a 200 amp electrical panel upgrade, replacing a 100-amp service with a Siemens exterior panel and meter base, along with a basement subpanel installation.
- 200-amp electrical panel replacement
- Exterior meter and panel installation
- Single-family home electrical upgrade
Project Overview
This electrical project was completed at a single-family home in Raleigh, North Carolina that was originally built in the 1970s. The existing 100-amp service equipment was replaced with a new 200-amp Siemens exterior panel and meter base installed on the left side of the home, and a subpanel was installed in the basement.
- Project Type: Electrical Panel Upgrade
- City: Raleigh, North Carolina
- ZIP Code: 27608
- Neighborhood: Five Points
- Home Type: Single-family home
- Project Location: Exterior (left side of home) and basement
Project Details
The electrical work included replacement and installation of service equipment and corrective updates to existing wiring.
- Main Electrical Panel: Installed a 42-space Siemens breaker panel with a 200-amp main breaker
- Service Connection: A new overhead service drop was installed to supply the upgraded electrical service
- Service Voltage: Service voltage was 240 volts
- Breaker Configuration: Breaker types included Standard breakers ranging from 15-amp and 20-amp single-pole circuits to 30-amp, 40-amp, and 60-amp breakers for major appliances
- Equipment Locations: Exterior panel and meter base were wall-mounted on the outside of the home, with an interior subpanel located in the basement
- Wiring Corrections: Existing wiring that had been installed incorrectly was corrected or replaced, and the house grounding system was installed and verified
Work Process
The installation followed a three-step process to complete a 200 amp electrical panel upgrade and restore safe electrical service.
Site Evaluation and Utility Disconnect
The work started with an onsite estimate at the single-family home to review existing conditions and define the scope. Power was shut off by coordinating a disconnect through the energy company so the service equipment could be replaced.
Removal and Installation of New Equipment
The existing electrical panel was removed first. The new electrical panel was then installed, and the grounding work was completed as part of the replacement.
Grounding Adjustments, Reconnect, and Final Verification
A grounding connection was added for the home’s gas system because it was located next to the electrical panel, and grounding connections were tied into the grounding intersystem. The energy company completed the service connection, and the completed installation passed city inspection. The homeowner was not present during the work.
Final Installation Photos
The photos documented the completed 200 amp electrical panel upgrade, showing the final exterior panel, meter base, and service configuration after installation.
Existing Electrical Panel (Before)
Existing Panel and Wiring (Before)
Exterior Panel (Before)
Meter Base (Before)
Basement Subpanel (After)
Breaker Labels (After)
Exterior Service (After)
Exterior Panel (After)
Code & Safety Notes
Panel Capacity and Load Evaluation
The existing panel capacity was evaluated and determined to be insufficient for the home. A load calculation was completed to support the 200-amp service upgrade.
Overcurrent Protection
Overcurrent protection was provided by a 200-amp main breaker installed as part of the new service equipment.
Grounding and Bonding
Two ground rods were installed using #6 bare copper conductors, and a bonding intersystem was installed in accordance with code requirements.
Permits & Inspection
A permit was required for the project, and the completed installation passed the required city inspection.
What Was Included in This Installation
This installation included the steps required to complete a residential 200 amp electrical panel upgrade, including service replacement, grounding work, and final testing.
Evaluation and Inspection
An evaluation of the existing electrical service was performed, and the installation was inspected after completion.
Service Equipment Replacement
The main electrical panel and meter base were replaced and mounted as part of the service upgrade.
Breaker Installation
New breakers were installed and replaced as required for the upgraded panel.
System Testing
The electrical system was tested to verify proper operation after installation.
Cleanup and Restoration
The work area was cleaned, and the site was left in restored condition after completion.
Final Review
A final walkthrough and review of the completed work were completed.
Related Electrical Service
This project involved residential electrical panel upgrade work, including a 200 amp electrical panel upgrade and related service equipment improvements.
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