Panel upgrade guides explaining when to upgrade, amperage options, and what a service upgrade costs in Northern Virginia.
Most modern homes need a 200-amp service to safely run EV chargers, heat pumps, and modern appliances, yet many older NoVA homes still have 100-amp or fused panels. These guides explain when a panel upgrade is required and how the work is permitted and inspected.
Looking for the bigger picture? Explore our Panel Upgrade services, or read the authoritative reference from NEC Article 408: panelboards and switchboards (NFPA 70).
Frequent breaker trips, a fuse box, an FPE or Zinsco panel, or plans to add an EV charger, hot tub, or heat pump are all signs you may need a panel upgrade. An electrician confirms with a load calculation.
A typical residential service upgrade takes 6-8 hours of on-site work, plus coordination with the utility for the meter disconnect and a county inspection.
Yes. A service or panel upgrade always requires an electrical permit and a county inspection, and the utility must disconnect and reconnect the meter. Licensed electricians handle this paperwork for you.
27 articles in this category

Panel upgrades are the perfect time to add whole-house surge protection. Learn how surge protectors work, why they matter, and how to protect your home from electrical surges.

Smart panels offer monitoring, control, and advanced features. Learn about smart panel options, costs, and whether upgrading to a connected panel makes sense for your home.

Not all electrical panels are created equal. Compare top panel brands including Square D, Siemens, Eaton, and more to make an informed decision for your upgrade.

Proper grounding protects your family and equipment from electrical hazards. Learn how panel grounding works, why it is essential, and signs of grounding problems.

Everything Northern Virginia homeowners need to know about electrical panel upgrades, including signs you need one, types of panels, costs, permits in Fairfax, Arlington, and Loudoun, and what to expect during the upgrade process.

Connecting a portable generator or battery power station to your home requires proper electrical integration. Learn about transfer switch types, panel requirements, and how to prepare your electrical system for backup power.

Thinking about installing an EV charger but worried about your electrical capacity? Learn when you need a panel upgrade for EV charging and how to plan your installation.

Is your electrical panel keeping up with modern demands? Learn the warning signs that indicate it's time for an upgrade and how to protect your home.

Not all circuit breakers are the same. Learn about the different types of breakers, what protection they provide, and where each type is required in your home.

Planning around a panel upgrade? Learn typical timelines for different types of upgrades, from simple replacements to full service upgrades, and what factors affect duration.

Commercial and residential electrical panels serve different needs and have distinct requirements. Learn the key differences in capacity, installation, and code requirements.

Planning to sell your Northern Virginia home? Learn when a panel upgrade adds value, what buyers and inspectors look for, and how to maximize your return on investment.

Planning a home addition? Learn why most additions require electrical panel upgrades and how to plan your electrical expansion for finished basements, room additions, and ADUs.

Electrical panels are involved in thousands of house fires each year. Learn how to prevent panel-related fires, detect early warning signs, and respond to electrical emergencies.

Arc fault circuit interrupters are now required in most living spaces. Learn what AFCIs are, why they matter, and how they affect your panel upgrade or renovation project.

Many homes in Northern Virginia have outdoor electrical panels. Learn about weatherproofing requirements, maintenance needs, and what to consider when upgrading exterior panels.

Need more electrical capacity but unsure whether to add circuits or upgrade your entire panel? We help you determine the most cost-effective solution for your situation.

Home inspectors often flag double-tapped breakers as a safety concern. Learn what double-tapping is, why it is dangerous, and how to properly fix this common code violation.

Wondering what happens during a panel upgrade? We walk you through the entire process from initial assessment to final inspection, so you know exactly what to expect.

Your electrical panel affects your home insurance eligibility and premiums. Learn about insurance requirements for panel upgrades, problematic panels, and how upgrades can reduce your costs.

Navigate the electrical permit process in Northern Virginia. Learn what permits you need for panel upgrades, who can pull them, and how inspections work in each county.

Planning a panel upgrade in Northern Virginia? Get accurate pricing information for 100 to 200 amp upgrades, including permits, labor, and materials for Fairfax, Arlington, and Loudoun counties.

Some electrical work is DIY-friendly, but panel work is not. Learn why professional electricians are essential for panel upgrades and what work you can safely do yourself.

Confused about electrical service sizes? We break down the differences between 100, 200, and 400 amp panels, helping you determine the right size for your Northern Virginia home.

Regular panel maintenance can prevent problems and extend panel life. Learn what to check annually, warning signs to watch for, and when to call a professional.

Is your electrical panel struggling to keep up with modern demands? Learn the top 10 warning signs that indicate it's time for an upgrade, from flickering lights to burning smells.

Federal Pacific and Zinsco electrical panels have been linked to thousands of house fires. Learn why these panels are dangerous and what you should do if your home has one.
Find more helpful articles in our other categories.
EV charging covers the Level 2 home chargers and circuits that recharge an electric vehicle from your own garage or driveway. These guides walk Northern Virginia drivers through charger selection, the dedicated 240-volt circuit and panel capacity a home charger needs, permitting, and the install costs to expect. A typical Level 2 setup adds roughly 25 to 40 miles of range per hour of charging.
Electrical home safety is the set of practices and devices that prevent shock, fire, and arc-fault hazards in a house. These guides cover GFCI and AFCI protection, smoke and carbon-monoxide detectors, overloaded circuits, aluminum wiring, and the inspections that catch problems early. Faulty wiring contributes to an estimated 45,000 home fires in the U.S. each year, which is why proactive checks matter.
Smart home technology connects lighting, outlets, thermostats, and security to app or voice control through reliable, code-compliant wiring. These articles explain smart switches and dimmers, whole-home automation hubs, structured low-voltage cabling, and the electrical groundwork a dependable smart home needs. Done right, a connected home can trim lighting and HVAC energy use by 10 to 15 percent.
Commercial electrical work covers the power systems, lighting, and code compliance that keep offices, retail spaces, restaurants, and multi-unit buildings running. These articles address three-phase service, panel and subpanel design, dedicated circuits for commercial equipment, emergency and exit lighting, and the permitting and NEC inspections that commercial properties must pass. Most commercial projects in Northern Virginia must meet the National Electrical Code on a roughly three-year update cycle, so staying current protects both safety and your certificate of occupancy.
Electrical energy efficiency is the practice of cutting wasted power through better lighting, smarter controls, and well-sized circuits. These guides cover LED retrofits, dimmers and occupancy sensors, energy monitoring, and load management that lowers your bill without sacrificing comfort. Switching from incandescent to LED lighting alone can reduce that lighting load by up to 75 percent.
Home backup power comes in two practical forms: a portable generator connected safely through a transfer switch, interlock kit, or inlet box, and a battery power station that stores electricity for silent, fuel-free, indoor-safe backup. These guides explain backfeed safety and carbon-monoxide precautions for portable generators, how battery stations from EcoFlow, Bluetti, and Anker SOLIX are sized in kWh and watts, and the electrical permitting an install requires. A transfer switch or interlock is required to connect a generator to your home safely and to code.
Lighting design pairs the right fixtures, layers, and controls to make a space both functional and inviting. These articles cover interior and exterior lighting, recessed and accent fixtures, landscape and security lighting, dimming systems, and energy-efficient LED upgrades. A well-planned layout typically blends three layers of light, ambient, task, and accent, to balance comfort and utility.
Seasonal electrical care is the year-round maintenance that keeps a home's wiring, outlets, and outdoor circuits safe through changing weather. These guides cover holiday lighting loads, storm and outage preparation, surge protection, and warm- and cold-weather inspections tuned to the Mid-Atlantic climate. A few targeted seasonal checks each year head off the outages and hazards that peak during DMV summer storms and winter cold snaps.
Local services are the city- and neighborhood-specific electrical guides for homeowners across Northern Virginia and the greater DMV. These articles cover permitting and inspection rules by jurisdiction, common wiring issues in older local housing stock, and what to expect from a licensed electrician in your community. AJ Long Electric serves more than two dozen cities and towns across Northern Virginia, Maryland, and Washington, D.C.
Electrical cost and pricing guides explain what common projects actually cost and the factors that move the final number. These articles break down pricing for panel upgrades, EV chargers, rewiring, lighting, and service calls, plus how labor, materials, permits, and home age affect a quote. As a benchmark, licensed electrical labor in the Northern Virginia and DMV market typically runs between $90 and $150 per hour.
Comparison guides weigh competing electrical products and approaches side by side so you can choose with confidence. These articles contrast options like 100- versus 200-amp service, hardwired versus plug-in EV chargers, portable generators versus battery power stations, and LED versus traditional lighting, with the trade-offs in cost, safety, and performance laid out plainly. Each comparison names the scenario where one option clearly wins so the decision is straightforward.
This FAQ collection gives direct, in-depth answers to the electrical questions Northern Virginia homeowners ask most. The articles explain code requirements, safety concerns, project timelines, permitting, and when to call a licensed electrician, written so a homeowner can act on the answer. Every answer reflects current National Electrical Code guidance and real field experience from licensed DMV electricians.
Ready to move from reading to results? Our licensed Northern Virginia electricians handle the work covered in these guides — permitted, inspected, and warrantied.
Our licensed electricians are ready to help with any electrical project in Northern Virginia.