Sub-Panel Installation in St. Louis
Professional sub-panel installation by First Choice Electric, LLC. Serving St. Louis County, St. Charles County, and surrounding areas with licensed electricians, permits included, and same-day inspection.
$1,500 - $3,000
installedSub-Panel Installation Services in St. Louis
First Choice Electric, LLC provides professional sub-panel installation services throughout the St. Louis metropolitan area, serving 30+ communities with licensed electricians.
Service Overview
What's included
Whether you're in O'Fallon, St. Charles, St. Peters, or any of the communities we serve, our licensed electricians deliver code-compliant work with same-day inspection.
Permits
Included
Ameren Coord
Included
Timeline
1-2 Days
Inspection
Same-Day
Sub-Panel Benefits
Perfect for garages and workshops. A sub-panel provides:
Code Compliance
Detached structures need local disconnect
Multiple Circuits
Power lights, outlets, and equipment
Future Expansion
Extra spaces for equipment you add
Proper Sizing
Calculated load for correct wire sizing
Ready to Get Started?
Get a free, no-obligation quote for your sub-panel installation project.
Get Your Free QuoteWhy Choose First Choice Electric for Your Sub-Panel
Professional service, transparent pricing, and quality work from St. Louis's trusted electrical contractor.
Remote Power Distribution
Add dedicated circuits in detached garages, workshops, or additions.
60-100 Amp Options
Sized appropriately for your needs—workshop, garage, or pool equipment.
Code Compliant
Proper feeder sizing, disconnects, and grounding per NEC.
Future Ready
Extra breaker spaces for equipment you'll add later.
Panel Brands We Install
We install quality electrical panels from trusted manufacturers. All panels meet current NEC codes and come with manufacturer warranties.
Panels That Need Immediate Replacement
These panel brands have documented safety issues and are no longer considered safe. If you have one of these panels, we strongly recommend replacement.
Federal Pacific
Breakers fail to trip during overloads, causing fires
Safety Warning
Zinsco
Breakers melt to bus bars, cannot be shut off
Safety Warning
Pushmatic
Breakers become unreliable with age, parts unavailable
Safety Warning
Challenger
Some models recalled for fire hazards
Safety WarningNot sure what panel you have? We offer free inspections to identify your panel brand and assess its condition.
Our Sub-Panel Process
From first call to finished project, here's what to expect when you work with First Choice Electric.
Assessment & Estimate
We inspect your current panel, discuss your needs, and provide a detailed written estimate—no obligation.
Approval & Coordination
Once approved, we coordinate with Ameren to confirm scope of work and pull all required permits.
Scheduled Disconnect
We coordinate the temporary utility disconnect and schedule your installation date.
Install & Inspection
Our licensed electricians complete the work with same-day inspection, then contact the utility to restore power.
Sub-Panel Service Details
Capacity
60A, 100A, or 125A
Breaker Spaces
12-24 typical
Feeder Wire
Sized to load
Location
Garage, workshop, outbuilding
Permit
Included
Documentation
Full paperwork provided
What's Included in Your Sub-Panel
Our quotes are comprehensive with no hidden fees. Here's everything included in your sub-panel price:
Sub-Panel Service Areas
We provide sub-panel installation services throughout the St. Louis metro area.
Warren & Lincoln Counties
Sub-Panel FAQ
Common questions about sub-panel installation in St. Louis.
Do I need a sub-panel for my detached garage?+
If you need more than 1-2 circuits in a detached structure, a sub-panel is usually the best approach. It provides a local disconnect (required by code) and room for multiple circuits without running individual wires back to the main panel.
How far can a sub-panel be from the main panel?+
There's no code-mandated maximum distance, but longer runs require larger wire to minimize voltage drop. We'll calculate the proper wire size for your specific installation.
What size sub-panel do I need for a workshop?+
It depends on your equipment. A basic workshop with lighting and outlets: 60A. Adding a welder or large compressor: 100A. We'll assess your current and future needs during the site visit.
Ready for Your Sub-Panel?
Get a free quote for your sub-panel installation in St. Louis. First Choice Electric responds within 24 hours with transparent, no-obligation pricing.
Get Your Free QuoteInstallations by
First Choice Electric, LLC5377 State Highway N, Suite 437, Cottleville, MO 63304Missouri License #2025001688 | St. Charles County #E25-000008 | St. Louis County #ES4501