How Long Does an Electrical Panel Upgrade Take?

One of the most common questions we receive about panel upgrades is "how long will I be without power?" It's an important question—you need to plan around the outage for work, meal preparation, and family needs. Here's a detailed breakdown of what to expect.

Key Takeaways

The actual panel installation takes 6-10 hours for a standard 200-amp upgrade.
The entire process from consultation to final inspection typically takes 2-4 weeks.
Complex upgrades involving meter base replacement or service entrance work may extend the timeline.
Power is off only during the installation day -- plan for approximately 8 hours without electricity.

Quick Answer: Most Panel Upgrades Take One Day

For standard residential panel upgrades in Northern Virginia, plan for 6-10 hours of work, with 4-8 hours without power. Our team typically arrives between 8-9 AM and completes work by 4-6 PM, restoring power before we leave.

Timeline Breakdown: Consultation and quote (1-2 days), permitting (3-10 business days), scheduling (1-2 weeks), installation (1 day), inspection (1-3 business days). Start early if you have a deadline like an EV charger installation.

Bundle and Save: Installing your EV charger and panel upgrade together saves significant money compared to separate projects. The electrician is already working at the panel, so adding the charger circuit is efficient.

Timeline by Project Type

Panel Replacement (Same Amperage)

Duration: 4-6 hours | Power outage: 3-5 hours

Need a Panel Upgrade?

Outdated or overloaded electrical panels are a safety risk. Our team specializes in 200-amp upgrades throughout Northern Virginia, with same-day panel assessments available. Call (703) 997-0026 to get started.

Get Your Free Panel Assessment →

If you're simply replacing a problematic panel (like a Federal Pacific) with a modern panel at the same amperage, the work is straightforward:

Setup and preparation: 30 minutes
Turn off main and document circuits: 30 minutes
Remove old panel: 1 hour
Install new panel: 2 hours
Reconnect and test: 1 hour
Cleanup and walkthrough: 30 minutes

100 Amp to 200 Amp Upgrade

Duration: 6-10 hours | Power outage: 5-8 hours

This is our most common upgrade. It includes service entrance changes:

Setup and utility coordination: 1 hour
Utility disconnects power
Remove old panel and meter base: 1.5 hours
Install new service entrance cable: 1-2 hours
Install new meter base: 1 hour
Install new 200 amp panel: 2 hours
Connect and test all circuits: 1.5 hours
Utility reconnects: 30 minutes - 2 hours (depends on scheduling)
Final testing and cleanup: 30 minutes

200 Amp to 400 Amp Upgrade

Duration: 1-2 days | Power outage: 8-16 hours

Larger upgrades are more complex and may involve utility transformer work:

Day 1: Service entrance installation, meter bases, first panel
Day 2: Second panel installation, circuit redistribution, testing
Utility coordination may add days to the timeline

Subpanel Installation

Duration: 3-5 hours | Power outage: 1-2 hours

Subpanels are faster because the main service remains intact:

Brief outage to add feeder breaker
Run feeder cable to subpanel location
Mount and wire subpanel
Connect circuits to subpanel

Factors That Can Extend Timeline

Panel Location Issues

Difficult access adds time:

Cramped spaces requiring careful maneuvering
Exterior panels in challenging locations
Panel relocation requests
Panels behind obstacles that must be worked around

Existing Code Violations

If we discover issues during the upgrade, they must be addressed:

Double-tapped breakers requiring additional circuits
Improper grounding that needs correction
Damaged wires that need replacement
Unsafe installations from previous work

Utility Company Scheduling

For service upgrades, Dominion Energy must:

Disconnect power at the meter
Reconnect after our work is complete
Coordinate timing can add 1-4 hours of wait time
In rare cases, utility delays may extend project to two days

Weather Conditions

Since service entrance work is exterior:

Rain may delay outdoor portions
Extreme heat or cold affects work pace
We'll reschedule in severe weather for safety

Additional Work Added

If you're adding circuits during the upgrade:

Each new circuit adds 30-60 minutes
Long wire runs take longer
Multiple additions can extend project significantly

The Full Project Timeline

Beyond installation day, here's the complete timeline:

Before Installation:

Initial consultation: 30-45 minutes
Quote preparation: Usually same day or next day
Scheduling: Typically 1-2 weeks out
Permit acquisition: 1-3 days (we handle this)
Utility coordination: 2-5 days for service upgrades

After Installation:

Inspection scheduling: 1-3 days
Inspection: 15-30 minutes
Any corrections: Usually same day
Documentation delivery: 1-2 days

Minimizing Disruption

Here are tips for managing around your upgrade:

Before the Day:

Charge all devices overnight
Plan meals that don't require cooking
Notify anyone who works from home
Make arrangements for medical equipment
Clear the area around your panel

During the Work:

Use a coffee shop or library for work-from-home needs
Keep a cooler handy for refrigerated items (short outage won't harm food)
Use the time to run errands
Battery-powered devices provide entertainment

Special Circumstances:

Medical equipment: Let us know in advance; we can arrange for temporary power
Sump pumps: Check weather forecast; we can provide temporary solutions
Work meetings: Share your schedule; we'll try to restore power for critical times

Why We Don't Rush

While we work efficiently, we never sacrifice quality for speed. Proper panel installation requires:

Careful documentation of existing circuits
Proper torque on all connections
Complete testing of every circuit
Thorough safety verification
Correct labeling for future reference

A rushed installation can lead to problems that cost more to fix than the time saved. Our experienced electricians work at a pace that ensures quality while minimizing your outage.

Two-EV Planning: If your household may eventually have two electric vehicles, plan for it now. A 200-amp panel with load management can support two chargers, or you may need 400-amp service for simultaneous full-speed charging.

Schedule Your Panel Upgrade

Ready to upgrade your panel? Contact AJ Long Electric at (703) 555-0123 to schedule your consultation. We'll provide an accurate timeline estimate based on your specific situation and work with your schedule to minimize disruption.