Electrical Panel Upgrades
& Heavy-Ups
Power your modern life. We execute code-compliant 200-amp and 400-amp panel replacements, sub-panels, and smart load centers across MD, D.C., and VA.
The Heart of Your Home's Grid
Older 100-amp panels were not designed to handle EV chargers, induction stoves, and modern HVAC systems simultaneously. Electrical Panel Upgrades & Heavy-Ups provide the expanded amperage, modernized grounding, and code-compliant safety breakers necessary to support a 21st-century lifestyle without fire hazards.
200-Amp Heavy Ups
We replace the meter, the outside cables, and the interior panel to double your home's electrical capacity safely and legally.
FPE & Zinsco Swaps
We urgently replace heavily recalled, fire-hazard legacy panels that cause homes to fail inspections and lose insurance.
Sub-Panel Additions
Ran out of physical breaker space? We install secondary panels for garage workshops, basement remodels, and home additions.
Smart Load Centers
Upgrade to app-controlled panels (like Span) that allow you to track energy usage and control individual breakers from your phone.
Infrastructure Specifications
Service Entrance Overhaul
A true "Heavy-Up" requires replacing the utility-side equipment on the outside of your house to physically bring more power inside.
SEC Wire Upgrades
Pulling 4/0 aluminum or 2/0 copper Service Entrance Cables for 200A loads.
Meter Base Replacement
Installing high-capacity, utility-approved meter sockets.
Riser Mast Repair
Replacing bent or damaged roof-penetrating metal conduit masts.
Weatherhead Fitting
Installing water-tight caps where overhead lines meet the mast.
Underground Laterals
Coordinating with the utility for trenched lateral service upgrades.
Exterior Disconnects
Adding NEC 2020 mandated emergency shut-offs outside the home.
Utility Coordination
Scheduling Potomac Edison / Pepco line-drop disconnects.
Inspection Passing
Securing the county "cut-in" card to restore permanent power.
Panel Architecture
We install premium, commercial-grade load centers built around solid copper busbars that won't pit, oxidize, or overheat like cheap aluminum alternatives.
Copper Busbars
Superior thermal conductivity and resistance to oxidation.
Maximum Expansion
Installing 40-space/80-circuit panels for future-proof growth.
NEMA 3R Enclosures
Weatherproof panel housings for exterior or damp location mounts.
High AIC Ratings
Panels rated to withstand massive Amps Interrupting Capacity.
Full-Length Neutrals
Abundant termination space to prevent illegal double-tapped wires.
Type 2 SPDs
Integrating whole-home surge protection directly onto the busbar.
Calibrated Lugs
Applying exact inch-pound torque specs to prevent thermal failure.
Precision Indexing
Printed, accurate circuit directories for emergency clarity.
Breaker Technology
Modern NEC codes require highly specialized "smart" breakers to prevent fires and shocks. We populate your new panel with the latest life-safety tech.
Arc-Fault Breakers
Microprocessors that detect hidden wall sparks in living spaces.
Ground-Fault Breakers
Protecting entire wet-zone circuits (kitchens/baths) from the panel.
Dual-Function (DF)
Combining AFCI and GFCI protection for high-risk laundry rooms.
Double-Pole Breakers
Dedicated high-voltage links for EVs, HVAC, and induction stoves.
Tandem Breakers
Space-saving half-height breakers for panels constrained by size.
200A Main Throw
The primary disconnect switch protecting the entire busbar assembly.
Interlock Kits
Mechanical lockouts allowing safe portable generator connection.
Trip Diagnostics
Breakers equipped with LED blink-codes to indicate fault types.
Grounding & Bonding Grid
A panel is only as safe as its path to the earth. When we upgrade a panel, we completely rebuild the grounding infrastructure to meet modern NEC standards.
Dual Ground Rods
Driving two 8-ft copper-clad electrodes 6 feet apart per code.
Cold Water Bonding
Clamping to the main street water inlet to equalize plumbing potential.
Gas Line Bonding
Ensuring CSST gas lines won't arc during a lightning strike.
Concrete Electrodes
Tying into foundation rebar (Ufer grounds) on new additions.
Sub-Panel Isolation
Strictly separating grounds and neutrals in downstream panels.
GEC Sizing
Upsizing the Grounding Electrode Conductor to #4 copper for 200A.
Intersystem Bridges
Mounting external blocks for telecom/cable companies to ground to.
Resistance Testing
Verifying the earth ground measures below 25 ohms of resistance.
The Reality of FPE & Zinsco Panels
Millions of homes were built in the 1970s and 80s using Federal Pacific Electric (FPE) and Zinsco panels. These panels have a documented defect where breakers fail to trip during massive overloads, actively causing house fires. Most home buyers will demand they be replaced, and insurers will refuse to cover the home until they are.
Panel Upgrade FAQs
A "heavy-up" is the regional DMV term for a Service Upgrade. It means we aren't just replacing the metal box inside; we are upgrading the utility cables on the outside of your house to physically increase the total amperage (usually from 100 amps to 200 amps) coming from the power company.
We perform strict NEC load calculations based on your home's square footage and appliances. Here is a general capability guide for standard panel sizes.
| Panel Amperage | Ideal Home Size | Supported Major Appliances |
|---|---|---|
| 100-Amp | Under 1,500 sq ft | Gas Heat/Stove, Basic AC. No EV charger. |
| 150-Amp | 1,500 - 2,000 sq ft | Standard electric appliances. Small EV charger. |
| 200-Amp (Standard) | 2,000 - 3,500 sq ft | Electric HVAC, Induction Stove, Hot Tub, Level 2 EV. |
| 400-Amp (Luxury) | 3,500+ sq ft | Dual HVAC, Multiple EVs, Luxury Kitchen, Pool Heaters. |
Absolutely. A panel upgrade involves disconnecting the main utility power and completely rebuilding the heart of your electrical system. We handle all local county permitting and coordinate the final inspections to ensure your home is 100% legal and insured.
Yes. Because we have to disconnect the main utility lines, your home will be without power for the duration of the physical swap (usually 6 to 8 hours). We coordinate this seamlessly, restoring power the same day before we leave.
If your main panel is out of physical slots but you still have plenty of total amperage capacity available in your load calculation, yes, a sub-panel is a great, cost-effective solution. However, if your total amperage is maxed out, adding a sub-panel will just cause your main 100A breaker to trip.
Ready to Safely Power Your Home?
Contact us today for a free, transparent estimate on your electrical panel upgrade in MD, D.C., DE, VA, WV, & PA.
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