100A to 200A Electrical Panel Upgrades on Long Island
Replace undersized or obsolete breaker boxes, weatherheads, and service entrance cables with clean, code-compliant 200-amp power engineered for modern South Shore and Nassau County homes.
At a Glance
Viking Electric & Design performs licensed 100-amp to 200-amp electrical panel upgrades, meter pan replacements, and service entrance rebuilds across Nassau County and western Suffolk from our East Rockaway base. Every upgrade includes full municipal permit filing, utility disconnect coordination with PSEG Long Island or local village utilities, NEC-compliant grounding, and third-party electrical inspection.
WHY CHOOSE VIKING ELECTRIC
- Free On-Site Estimates
- Permits & Inspections Included
- Nassau & Suffolk Licensed
- Based in East Rockaway
What Our Electrical Panel Upgrades Service Includes
Many homes across East Rockaway, Oceanside, Lynbrook, Rockville Centre, and surrounding Nassau County neighborhoods were built between the 1920s and 1960s with 60-amp fuse boxes or early 100-amp breaker panels. While those systems handled mid-century lighting and basic appliances, today’s homes run central air conditioning, heat pumps, induction ranges, finished basement circuits, and Level 2 EV chargers that routinely push older panels past their safe thermal capacity.
A true 200-amp service upgrade involves more than swapping the indoor breaker enclosure. To safely deliver 200 amps of continuous capacity, we evaluate and upgrade the entire service entrance assembly: the overhead weatherhead or underground lateral conduit, the Service Entrance (SE) cable, the exterior utility meter pan, the main disconnect breaker, the interior load center, and the grounding electrode system (dual ground rods and cold-water bonding per National Electrical Code Article 250).
At Viking Electric & Design, we treat the electrical panel as the mechanical heart of your property. Every circuit is traced, balanced across phases, neatly dressed with clean right-angle conductor routing, and permanently labeled in plain English so you never have to guess which breaker controls a room during an emergency.
Signs Your Home Needs an Electrical Panel Upgrade
Homeowners often discover an undersized or deteriorating panel during a kitchen renovation, HVAC replacement, or home insurance underwriting inspection. Common warning signs include:
- Frequent breaker trips when running high-draw appliances such as central A/C, microwaves, hair dryers, or space heaters simultaneously.
- Obsolete or high-risk breaker panels—including Federal Pacific Electric (FPE) Stab-Lok, Zinsco, Pushmatic, or original 60A/100A fuse blocks—that fail to trip under overcurrent conditions or prevent home insurance renewal.
- Rust, salt-air corrosion, or water intrusion inside the panel cabinet or exterior meter socket, which is especially common in South Shore coastal communities like Long Beach, Island Park, Oceanside, and Freeport.
- No remaining breaker slots (or tandem/double-tapped breakers crowded onto existing terminals) when adding a Level 2 EV charger, hot tub, ductless mini-split, or standby generator transfer switch.
- Dimming or flickering lights whenever your air conditioning compressor, sump pump, or refrigerator motor kicks on, indicating voltage drop or loose bus-bar connections.
Our 4-Step Installation & Inspection Process
Every project is managed directly by founder Robert Neidecker from load calculation through final municipal underwriter sign-off.
On-Site Load Calculation & Service Entrance Inspection
We inspect your existing indoor load center, grounding system, exterior meter pan, and overhead or underground utility drop, performing an NEC Article 220 load calculation to confirm whether a 200A (or 300A/400A) service is right for your property.
Permit Filing & Utility Coordination
We pull the required electrical permit with your local town or incorporated village building department and coordinate disconnect/reconnect scheduling with PSEG Long Island, Rockville Centre Electric, or Freeport Electric.
Same-Day Service Rebuild & Panel Changeout
In a coordinated single-day outage (typically 6 to 8 hours), we install the new exterior meter socket, service entrance conductors, copper grounding electrodes, and a commercial-grade 200A copper-bus load center with whole-home surge protection.
Underwriter Inspection & Final Sign-Off
We meet the authorized electrical underwriter inspector on site, secure the Certificate of Compliance for your building department and homeowner’s insurance carrier, and walk you through your newly labeled panel directory.
Long Island Utility, Coastal & Permit Requirements
Electrical service upgrades on Long Island require strict adherence to utility red-book specifications alongside the National Electrical Code. PSEG Long Island enforces specific clearances for overhead weatherheads over driveways and roofs, meter socket mounting heights, and corrosion-resistant equipment in FEMA flood zones along the South Shore.
In addition, Nassau County does not issue a single countywide electrical permit. Work in unincorporated areas falls under the Town of Hempstead, Town of North Hempstead, or Town of Oyster Bay, while incorporated villages—such as East Rockaway, Rockville Centre, Lynbrook, Freeport, Cedarhurst, and Long Beach—maintain their own building departments and inspection protocols. We manage the paperwork end-to-end.
Long Island Standards We Enforce
- PSEG Long Island, Rockville Centre Electric, and Freeport Electric meter pan and service-mast compliance.
- NEMA 3R weatherproof enclosures and stainless/hot-dipped galvanized hardware for South Shore coastal exposure.
- NEC 2020/2023 external emergency service disconnect and whole-home Type 1 or Type 2 Surge Protective Device (SPD) integration.
Local Electrical Panel Upgrades Guides by Town
Select your community below for town-specific building department permit rules, utility disconnect requirements, and local project examples:
Panel Upgrades — Frequently Asked Questions
- How much does a 200-amp electrical panel upgrade cost on Long Island?
- 200-amp service upgrade costs depend on whether your electrical service is overhead or underground, the condition of the exterior meter pan, panel capacity requirements, and local village permit fees. Call (516) 530-3840 for an exact on-site written estimate.
- How long will my power be off during a panel replacement?
- Most residential 100A-to-200A panel and service upgrades are completed in a single day. Power is typically disconnected around 8:30 AM and restored by mid-to-late afternoon the same day before we leave your property.
- Do I need a permit to upgrade my breaker box in Nassau or Suffolk County?
- Yes. Replacing a main service panel or upgrading amperage requires an electrical permit and a third-party electrical underwriter inspection. Viking Electric & Design (Nassau County Licensed / Suffolk County Licensed) handles all permit filings and inspection appointments.
- Can you replace a Federal Pacific (FPE) or Zinsco panel without changing the meter?
- If your existing exterior meter pan and service entrance cable are already rated for 150A or 200A and in code-compliant condition, we can perform a panel-only swap. However, if the service cable is frayed or only rated for 100A, we recommend a full service entrance upgrade so your home has safe capacity and passes inspection.
Related Electrical Services
EV Charger Installation
Safe, hardwired 240V EV charging stations engineered for continuous high-amperage loads—installed cleanly in garages, driveways, and commercial parking areas across Nassau and western Suffolk.
Generator & Transfer Switch Installation
Protect your home or business from coastal nor’easters, hurricane outages, and grid failures with code-compliant automatic transfer switches, portable generator inlets, and whole-home backup power.
Emergency Electrical Repair
Rapid, methodical electrical diagnostics and hazard mitigation for burning panel odors, partial power loss, storm-damaged service drops, and dead critical circuits.
Where We Work
Based in East Rockaway, NY. Our core service area is the South Shore of Nassau County, central and eastern Nassau, and western Suffolk. We also take jobs in the five boroughs by appointment.
South Shore Nassau
East Rockaway, Oceanside, Lynbrook, Hewlett, Woodmere, Cedarhurst, Lawrence, Atlantic Beach, Island Park, Long Beach, Baldwin, Freeport, Rockville Centre, Bellmore, Merrick, Wantagh, Seaford
Central & Eastern Nassau
Valley Stream, Franklin Square, Garden City, Mineola, Hempstead, East Meadow, Massapequa, Farmingdale, Bethpage, Levittown, Hicksville, Plainview, Jericho, Syosset
Western Suffolk
Amityville, Copiague, Lindenhurst, Babylon, West Babylon, North Babylon, Deer Park, Melville, Huntington, Huntington Station, Commack, Dix Hills