Commercial panel. Replaced in service.
Commercial main panel replacement, distribution panel additions, and service upgrades on occupied buildings. Most replacements happen at night or over a weekend to avoid tenant downtime. We coordinate the utility, the inspector, and the tenant relocations.
A commercial panel swap is a logistics problem.
The electrical work on a 400A or 600A commercial panel replacement is not the hard part. The hard part is coordinating the utility, the inspector, the GC, the building owner, and every tenant in the building so the power-off window happens at the right time and the power comes back on schedule. We handle that coordination.
Common scenarios: an aging Federal Pacific or Zinsco commercial panel that the insurance carrier wants replaced (recall-class panels in commercial use are uninsurable in most carriers), a service capacity upgrade because the business has grown (300A panel feeding a tenant who now needs 400A), or a distribution panel addition where the existing main is fine but the downstream distribution needs expansion.
Most commercial panel replacements happen at night or over a weekend. The utility schedules a service disconnect for the window, we work, the inspector visits, the utility re-energizes. For multi-tenant buildings, we coordinate with property management on tenant notifications, freezer/refrigeration considerations, and IT-equipment shutdown sequencing.
For service upgrades that go beyond the existing service capacity (300A to 600A, single-phase to three-phase), we coordinate with the utility on service-entrance redesign — new mast, new meter base sized for the larger service, new feeder from the meter to the new panel, and the utility-side coordination on the larger transformer and drop.
- Typical scope
- Service replacement · distribution panel additions · capacity upgrades · after-hours
- Typical timeline
- Weekend typical for occupied · phased for multi-tenant
- Typical price
- Itemized per project · scope-based
- Permit
- Pulled and managed by us
- Inspection
- Multi-phase coordination · utility commissioning
- Warranty
- 2 years labor · pass-through manufacturer warranty
Commercial panel scope.
Main panel replacement
Same-amperage replacement (e.g. existing 400A swapped for new 400A Square D / Eaton / Siemens commercial) or capacity upgrade with service-entrance redesign.
Distribution panel additions
Sub-panels added downstream of an existing main when load increases or new tenant space requires dedicated distribution. Code-compliant feeder sizing, proper grounding bond.
Service capacity upgrades
300A to 600A, 600A to 1200A, single-phase to three-phase conversions. Coordinated with the utility on transformer sizing, drop redesign, and meter base replacement.
Recall-class panel replacement
Federal Pacific Stab-Lok, Zinsco, Sylvania-Challenger commercial panels are uninsurable in most carriers and warrant proactive replacement. We handle the swap during occupied operation.
Utility + inspector coordination
Service disconnect request with TVA-LPC, scheduling around tenant operations, inspection at completion, utility re-energization — all managed by us.
Tenant notification + relocation
For multi-tenant buildings, we coordinate with property management on tenant notifications, freezer/refrigeration planning, and IT-equipment shutdown sequencing.
Field log.
Where we install this.
Same-day truck rolls across the East Tennessee corridor. Sevier, Knox, Blount, Jefferson, and Cocke counties primarily.
- Sevierville, TN
- Pigeon Forge, TN
- Gatlinburg, TN
- Knoxville, TN
- Farragut, TN
- Powell, TN
- Maryville, TN
- Alcoa, TN
- Seymour, TN
- Townsend, TN
- Dandridge, TN
- Jefferson City, TN
Five steps. No surprise invoices.
Text or call us first
Describe the job. We follow up with a phone chat to scope it, then we send your quote. Same-day for most residential.
On-site walk-through
For larger jobs, we come out, look at the panel, and talk through what you actually want. Free. No “let me get back to you.”
Itemized estimate
Every line item priced. Materials, labor, permit, inspection. You see exactly where the dollars go before you sign anything.
Job day · permits handled
We pull permits, coordinate with the county inspector, and arrive when we said we would. We protect your floors. We label every breaker. We test every circuit before we leave.
Inspection & sign-off
Inspector signs off, we walk you through what changed, we hand over the documentation. If anything ever flickers, you have our cell.
We replaced a Federal Pacific 600A main panel in an occupied restaurant. Volt Pro coordinated the utility, the inspector, and our refrigeration tech for a 14-hour Sunday window. Restaurant opened Monday morning on schedule. The panel passed inspection first try.
Five things we get asked every week.
How do you replace a commercial panel without shutting down the business?
How long does a commercial panel replacement take?
My commercial panel is a Federal Pacific or Zinsco — do I need to replace it?
Can you do single-phase to three-phase service conversions?
What does commercial panel replacement cost?
Commercial panel aging out?
On-site walk-through within the week. Itemized estimate before any work starts.
If it shocks you, we got you. A licensed Tennessee electrician serving Sevierville, Knoxville, and the Smoky Mountains corridor since 2018.