Stuart and surrounding Martin County neighborhoods contain many homes built from the 1950s through 1980s whose original 60- or 100-amp panels cannot safely support added air conditioning, EV chargers or whole-house generators. Upgrading to a 200-amp service requires pulling new service entrance cable from the utility point, installing a new meter base if needed, and running properly sized copper or aluminum feeders to the new panel location. In older Downtown Stuart Historic District properties, we often encounter knob-and-tube wiring or undersized grounds that must be addressed before the utility will reconnect power.
The humid subtropical climate brings constant moisture that corrodes aluminum bus bars and neutral lugs faster than in drier regions. Panels located in garages or exterior walls near Stuart Beach or the Riverwalk see accelerated oxidation, especially when flood-prone Port Salerno lots allow occasional standing water. We use copper bus panels with tin-plated lugs and add drip loops on service mast entries to reduce water intrusion. All work follows current Florida Building Code and Martin County permitting requirements, including proper working clearances and arc-fault protection where bedrooms are present.
Jensen Beach and Hobe Sound homes on sandy soil sometimes need deeper grounding electrodes or concrete-encased electrodes to achieve the required 25 ohms or less. We also install whole-house surge protection at the panel during upgrades because lightning activity is common in summer storms. Homeowners frequently discover that adding a subpanel for a pool or guest house is cheaper than a full service upgrade when the main panel still has capacity, but we verify load calculations first.
Technician insight
In Stuart the thing that catches most people out with Electrical Panel Upgrade is the age of the service entrance cable on homes built before 1980 in the Historic District and Port Salerno. The old aluminum SE cable often shows corrosion from years of humid air and occasional salt exposure, so we almost always replace it at the same time rather than risk a failure after the new panel is in.
Jensen Beach 1968 Ranch Home
Homeowner added a pool and EV charger and kept tripping the main breaker. We found a 100-amp panel with corroded aluminum lugs. We upgraded to a 200-amp copper bus panel, replaced the service entrance cable, added a grounding electrode and installed a generator interlock. The utility reconnected the same afternoon and the home now runs all loads without issues.
Electrical Panel Upgrade Services We Offer
✓200 Amp Panel Upgrade
Replace outdated 60- or 100-amp panels with a 200-amp main breaker panel to support central AC, tankless water heaters and EV chargers common in Martin County homes.
✓Fuse Box to Breaker Conversion
Remove old fuse boxes still found in Downtown Stuart and Port Salerno cottages and install modern breaker panels that meet current code for arc-fault and ground-fault protection.
✓400 Amp Service Upgrade
Install 400-amp services for larger Jensen Beach and Hobe Sound properties with multiple AC units, pools and workshops when a single 200-amp panel is insufficient.
✓Generator Interlock Installation
Add code-compliant interlock kits or transfer switches during panel upgrades so homeowners in Stuart Beach can safely run portable or standby generators after storms.
✓Aluminum Wiring Remediation
Address 1970s aluminum branch wiring during panel work by installing CO/ALR breakers or pigtailing connections to prevent overheating in older Martin County homes.
Electrical Panel Upgrade Cost in Stuart, FL
| Service | Typical Range | What Affects It |
|---|---|---|
| 100A to 200A Panel Upgrade | $1,800–$2,800 | Price rises if service mast or meter base must be replaced. |
| Fuse Box Replacement | $2,100–$3,100 | Higher when knob-and-tube wiring remediation is required. |
| 400A Service Upgrade | $3,400–$5,200 | Includes larger conduit and utility coordination. |
| Generator Interlock Add-On | $350–$650 | Installed during the same panel upgrade visit. |
Ranges are typical for Stuart, FL and confirmed with an exact written quote before any work starts.
How it works
- 1
Load Calculation And Site Visit
We measure existing service size, list major appliances and calculate required amperage based on the specific home in Stuart or Jensen Beach.
- 2
Permit And Utility Coordination
We pull the Martin County electrical permit and schedule the power company disconnect so the upgrade can proceed safely.
- 3
Panel Replacement And Grounding
Old panel is removed, new panel mounted, new service entrance cable installed and grounding electrodes driven or bonded per local soil conditions.
- 4
Inspection And Power Restoration
Martin County inspector signs off, utility reconnects service and we test all circuits before leaving the job.
Pricing
Typical residential upgrades range from $1,800 to $4,200 depending on service size and whether the meter base must move. Call for a written quote. Mon–Fri 8am–6pm, Sat 9am–2pm.