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Whole-Home Surge Protection · South Carolina
A whole-home surge protective device (SPD) mounts at the panel and limits voltage spikes before they reach your circuits. The current National Electrical Code requires one for new and replaced services in dwellings; it works best paired with plug-in protectors for electronics.
Hurricane season on the coast and fast inland growth drive generator, surge and EV work.
Across the Southeast, homes deal with heat, humidity, frequent thunderstorms and hurricane season near the coast. Permit offices, utilities and housing stock differ by city, which affects how whole-home surge protection is planned and scheduled. These local guides cover the South Carolina cities where we have written specific notes.
Coastal South Carolina's summer thunderstorms bring frequent lightning, and surge damage to AC systems, pool equipment and electronics is common in Charleston. A whole-home surge protective device at the panel, combined with plug-in protection for electronics, is the standard approach.
Utility: Dominion Energy South Carolina (some outlying areas: Berkeley Electric Cooperative)
The Midlands get frequent summer thunderstorms, and in a city as hot as Columbia, air conditioners run nearly nonstop, which makes their control boards and compressors a common surge casualty. A whole-home surge protective device at the panel limits spikes coming in on the service, while plug-in protection covers televisions, computers and network gear.
Utility: Dominion Energy South Carolina (some outlying areas: electric cooperatives)
Greenville sits at the edge of the Blue Ridge foothills, where summer storms build quickly and bring frequent lightning. Surges are a common cause of damaged heat pump boards, garage door openers, televisions and home office equipment.
Utility: Duke Energy
1. Check grounding
Grounding electrode and bonding are inspected.
2. Install the SPD
The device is mounted on a breaker or lugs with short leads.
3. Verify
Indicator lights and connections are checked.
Electricians set their own prices; local permit fees and utility requirements add to these factors.
Permits come from the city or county where the home is. For example: Charleston: Electrical permits inside city limits come from the City of Charleston's building inspections division; other municipalities and unincorporated Charleston County have their own. Columbia: Inside city limits, electrical permits come from the City of Columbia's building inspections; Richland and Lexington counties and nearby cities have their own. Greenville: Electrical permits inside city limits come from the City of Greenville's Planning and Development office; unincorporated areas are permitted by Greenville County.
Charleston: Dominion Energy South Carolina (some outlying areas: Berkeley Electric Cooperative). Columbia: Dominion Energy South Carolina (some outlying areas: electric cooperatives). Greenville: Duke Energy.
No. It handles large surges at the panel; point-of-use protectors handle smaller ones near sensitive electronics.
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