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Safe, Modern Electrical Service

Electrical Panel Upgrades in Greenville & Spartanburg

Upgrade your outdated electrical panel to handle modern power demands safely. From 100-amp to 200-amp upgrades, we ensure your home has the capacity it needs.
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24/7 Emergency Service

Licensed • Bonded • Insured

⭐⭐⭐⭐⭐ 4.9/5 Rating
Same-Day Service Available

Why Upgrade Your Panel?

We solve these challenges every day
  • Outdated electrical panel can't handle modern power demands
  • Frequent breaker trips and power interruptions
  • Fuses instead of circuit breakers (dangerous and outdated)
  • Planning home renovation or adding major appliances
  • Warm electrical panel or burning smell
  • Insurance requiring panel upgrade for coverage
Our Solution
Professional solutions tailored to your needs
  • Modern 200-amp electrical panel installation
  • Increased capacity for all your power needs
  • Circuit breaker upgrades and replacements
  • Code-compliant installations
  • Safety inspections and permits handled
  • Smart panel options for energy monitoring
Our Lighting Installation Process
Our simple, straightforward process

1

Assessment

Evaluate current panel capacity

2

Planning

Design upgrade solution

3

Installation

Professional panel upgrade

4

Inspection

Code compliance verification
Why Choose One Call Services?
Professional service you can trust

100% Satisfaction Guarantee

We stand behind our work with a complete satisfaction guarantee

Licensed & Insured

Fully licensed, bonded, and insured for your protection

On-Time Service

We respect you time and arrive when scheduled

No Hidden Fees

Transparent pricing with no surprise charges

What Our Customers Say
“Upgraded our 60-year-old fuse box to a modern 200-amp panel. Professional work, clean installation, handled all permits. Home insurance premium even went down!”

Michael Thompson

1 week ago
“Needed panel upgrade to add EV charger. They explained everything clearly, finished in one day, passed inspection first try. Excellent service!”

Jennifer Lee

2 weeks ago
“Panel was tripping constantly. New 200-amp service solved everything. Crew was professional, site was spotless when done. Worth every penny!”

David Brown

3 weeks ago
Frequently Asked Questions
Got questions? We’ve got answers
Signs include frequent breaker trips, flickering lights, buzzing sounds from the panel, visible rust or damage, a panel over 25 years old, or if you’re adding major appliances. We offer free assessments to determine if an upgrade is needed.
Most residential panel upgrades take 4-8 hours to complete. This includes the upgrade itself, cleanup, and final inspection. We coordinate with your utility company to minimize power downtime.
Yes, panel upgrades require permits and inspections. We handle all permit applications and coordinate inspections to ensure your upgrade meets all local codes and regulations.
100-amp service is older and may not support modern power demands. 200-amp service is current standard, handling multiple large appliances, HVAC systems, EV chargers, and future electrical needs comfortably.
Yes, power will be temporarily disconnected during the upgrade. We work efficiently to minimize downtime, typically 2-4 hours. We’ll coordinate timing to minimize disruption to your schedule.
While we can replace individual breakers, if your panel is outdated or at capacity, a full upgrade is safer and more cost-effective long-term. We’ll assess and recommend the best solution.

Contact Information

Phone

864-ONE-CALL (864-663-2255)
Available 24/7 for emergencies

Email

onecallsc@gmail.com
We'll respond within 24 hours

Service Area

Greenville, SC Spartanburg, SC & Surrounding Areas

Business Hours

Monday - Friday: 7:00 AM - 6:00 PM
Saturday: 8:00 AM - 4:00 PM
Sunday: Emergency Service Only
24/7 Emergency Service Available

🎉 Special Offer: Mention this form for 10% off your first service!

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