Powering
Homes.
Wired Right.
Expansion Wiring Technologies delivers safe, code-compliant residential and commercial electrical work across the 50-mile Harrisburg region — panels, EV chargers, lighting, generators and more.
About Us
Expansion Wiring Technologies is a locally owned electrical contractor based in Harrisburg, PA. For 15+ years our licensed master electricians have wired homes, upgraded panels, installed EV chargers, and kept small businesses running safely across the greater Harrisburg region. We show up on time, quote up front, and every job is done to code — backed by our workmanship guarantee.
Our Services
Panel Upgrades & Rewiring
100A → 200A/400A service upgrades, sub-panels, and full-home rewires done to current NEC code.
EV Charger Installation
Level 2 chargers for Tesla, Ford, Chevy and universal J-1772 — installed clean and permitted.
Lighting Installation
Recessed LED, chandeliers, under-cabinet, exterior and landscape lighting — inside and out.
Ceiling Fans & Fixtures
New installs, replacements, and rewiring existing boxes so fans hang safe and balanced.
Outlets, Switches & Wiring
GFCI/AFCI outlets, dimmers, smart switches, dedicated circuits, and troubleshooting.
Generators & Surge Protection
Whole-home standby generators, transfer switches, and whole-panel surge protection.
Our Process
Booking an electrician with Expansion Wiring Technologies takes just a few easy steps.
See Our Work
Reviews
EWT upgraded our old 100A panel to 200A and installed a Tesla charger in the garage. Clean install, permitted, passed inspection on the first try. Fair price too.
Had recessed LEDs installed in our whole living room and kitchen. Guys were on time, tidy, and the lighting looks amazing. Highly recommend Expansion Wiring.
Called them for an emergency — half our house lost power. They were out same day, diagnosed a bad breaker, and had us back up within a couple hours. Life savers.
Proudly
Serving
Central PA
Based in Harrisburg (ZIP 17112) — we cover a full 50-mile service radius across Dauphin, Cumberland, Lancaster, Lebanon and York counties.
- Harrisburg, PA
- Hershey, PA
- Mechanicsburg, PA
- Camp Hill, PA
- Hummelstown, PA
- Middletown, PA
- Carlisle, PA
- Lebanon, PA
- Palmyra, PA
- Elizabethtown, PA
- York, PA
- Lancaster, PA
Frequently Asked Questions
