Breaker Box Replacement in Myrtle Beach, SC
A real assessment before the number, a written price before anything opens, and a permit filed as part of the job.
How much does breaker box replacement cost in Myrtle Beach, SC?
A same-amperage breaker box replacement typically runs $1,500 to $2,800 in Myrtle Beach; corrosion, damage or limited access can push that to $4,200, and adding capacity at the same time puts it in the same $1,800–$4,800 range as a 200-amp upgrade.
This is a condition-driven replacement, not a capacity upgrade. If your panel is old, damaged, corroded or simply out of room for one more breaker regardless of its amperage rating, this is the right service. If the panel is fine but you need more total power for an EV charger or generator, that's a 200-amp panel upgrade. If the label reads Federal Pacific or Zinsco, that's its own page with its own specific hazard story.
Why a Breaker Panel Needs Replacing
A breaker panel doesn't have to be under-amped to be a problem. Physical damage, corrosion, and simply running out of breaker slots are three separate reasons to replace one, and none of them require raising your service size.
Corrosion is the one that shows up most in this market's coastal zip codes. Salt air carries fine particulate well inland from the ocean, and it settles on metal surfaces including panel enclosures, breaker terminals and bus bar connections, even on equipment that's never seen direct spray or standing water. A corroded breaker terminal can trip too easily, fail to trip when it should, or fail to interrupt power cleanly during a fault, and none of that shows from a quick glance at the panel door.
Running out of physical breaker space is common in older homes that have had circuits added over the decades: a window AC unit here, a workshop outlet there, until the panel simply has no slots left even though its amperage rating hasn't changed.
Signs Your Breaker Box Needs Replacing
- Visible rust or discoloration on the panel enclosure or doorA cosmetic-looking sign that often means the corrosion has already reached the connections inside.
- No room for another breaker, even with tandem breakers usedA physical-capacity problem separate from amperage. Adding a circuit means replacing the box, not just finding a slot.
- Breakers that feel loose, warm, or won't stay resetA sign of a failing connection at the breaker or bus bar, not a problem the breaker itself can fix once replaced alone.
- Panel took on water during a storm or plumbing leakEven after drying out, a flooded panel's internal connections are rarely trustworthy long-term. Treat this as a replacement question, not a dry-and-reuse one.
- The enclosure itself is cracked, bent, or the door doesn't sealPhysical damage compromises the panel's protection against moisture and accidental contact, independent of anything electrical.
How Breaker Box Replacement Works
- 01
Site visit and diagnosis
The electrician confirms whether the issue is condition-driven (this service), capacity-driven (a 200-amp upgrade), or a named-brand hazard, and checks for corrosion at the connections, not just the surface.
Time on site: 30–45 minutes - 02
Permit filed
Required for any panel replacement in this market, regardless of whether the amperage changes.
Time on site: before install day - 03
Panel swap
Power off for the swap, old panel out, new panel in, every circuit reconnected and labeled.
Time on site: 3–7 hours - 04
Inspection
Scheduled after install with whichever permit desk covers the address.
Time on site: scheduled after install
Finished stateA new panel free of corrosion, physical damage or capacity limits, with a permit on file and every circuit clearly labeled.
Permits and Inspection for a Condition-Driven Replacement
A permit and post-install inspection are required for this job the same as for a capacity upgrade, filed with whichever office covers your address: City of Myrtle Beach, Horry County Code Enforcement, or one of the market's other separate desks. There's no version of a panel replacement that skips this step, even when the amperage doesn't change.
What You'll Pay in Myrtle Beach, SC
USD
- Same-amperage breaker box replacement$1,500–$2,800per homeStraightforward swap: no capacity change, easy panel access.
- Replacement with capacity increase$1,800–$4,800per homeSame scope as a 200-amp panel upgrade — priced by amperage and access, not condition.
- Corrosion or storm-damage remediationup to $4,200per homeHigher end reflects corroded conduit, damaged conductors, or access problems found once the panel's opened.
These are typical ranges for Grand Strand; your exact price is confirmed in writing after the site visit. Coastal-zone jobs with visible corrosion tend to run toward the top of the range once the connections are actually inspected.
See the full panel upgrade cost guide for how this compares across every service in this pack.
Is This the Right Page for Your Panel?
Compared onWhat's actually wrongAmperage involved
Breaker box replacement (this page)
Best forPanels that are old, damaged, corroded, or out of breaker slots, regardless of amperage
- Addresses the actual failure mode instead of a generic swap
- Same permitted process whether or not amperage changes
- Doesn't add capacity by itself unless you specifically request a larger panel
200 amp panel upgrade
Best forA panel that's structurally fine but doesn't have enough amperage for what you're adding
- Solves a capacity problem directly
- Doesn't apply if your panel's real problem is corrosion or physical damage, not amperage
Federal Pacific & Zinsco replacement
Best forA specific labeled brand with a documented breaker-reliability history
- Addresses a hazard tied to the brand itself, independent of condition or capacity
- Only relevant if your panel is actually one of those two brands
If your panel is corroded, damaged, or out of slots, this page is the right one regardless of what amperage it's rated for. If it's structurally sound but you need more power, go to the 200-amp upgrade page instead. If the label says Federal Pacific or Zinsco, that's a separate, more specific issue worth its own page.
Breaker Box Replacement in Myrtle Beach, SC — questions
A single breaker that trips or won't reset is usually a $150–$350 breaker swap, not a panel replacement. Replacement becomes the right call when the problem is at the panel level: corrosion at multiple connections, physical damage to the enclosure, or no room left for another circuit.
Yes. Decades of thermal cycling, humidity, and (in this market) salt-air exposure gradually degrade connections even without a single dramatic failure. A panel that's simply old and tired, with no one obvious symptom, is still a legitimate reason to replace it before it fails in a way that isn't convenient.
It depends on where the corrosion is. Surface rust on the enclosure door is mostly cosmetic. Corrosion at a breaker terminal or bus bar connection is not: it can cause a breaker to fail to trip when it should, or to trip unpredictably. An electrician checks the connections, not just the visible surface, before calling it either way.
A same-amperage replacement typically runs $1,500 to $2,800 in Myrtle Beach. If you're also increasing capacity, or the electrician finds corrosion damage once the panel's open, it can run up to $4,800.
The physical work overlaps, but the reason is different. A panel upgrade adds capacity for new loads. Breaker box replacement fixes a panel that's failing, damaged or out of physical space, regardless of whether the amperage changes at all.
Related services
- L-100all panel services/services
- L-101200 amp panel upgrade/services/200-amp-upgrade
- L-104Federal Pacific and Zinsco panel replacement/services/federal-pacific-zinsco
- N-03signs you need a panel upgrade/guides/signs-you-need-a-panel-upgrade
- A-SOCbreaker box replacement in Socastee/service-areas/socastee
- W-001get a breaker box replacement quote/contact
Licensed, insured panel upgrades, breaker box replacement and meter base work for Myrtle Beach and Horry County.
- 01Licensed & insuredEvery job is performed by a licensed, insured electrician working to South Carolina electrical code.
- 02Fixed written pricingThe number you see after the load calculation is the number you pay. It doesn't move once the panel's open.
- 03Permits handledThe permit gets filed and the inspection gets scheduled as part of the job, not left for you to arrange.
- 04One focused serviceThis is a panel-focused practice, not a full-service electrical shop. That means less guessing on this one job type, not more upsell.
Request a quote
Tell us what your panel looks like now (age, brand if you know it, any breaker trouble) and we'll call back with next steps.
Ready for a written price?
Corrosion and physical damage don't always show from the outside. A site visit confirms what's actually wrong before you're quoted a number.