Electrical Services

in Essex County, NJ

Close-up of a weathered wooden fence with electrical insulators and wires attached.

Knob-and-Tube Rewiring & Remediation

Homes with knob-and-tube wiring often face safety risks, insurance challenges, and limitations when upgrading electrical systems. William Harris Electrical Contractor specializes in knob-and-tube evaluation, remediation, and full rewires, helping property owners modernize safely and confidently.

  • Identify active and abandoned knob-and-tube wiring

  • Replace outdated wiring with modern, code-compliant systems

  • Safely integrate new circuits and devices

  • Permit coordination and inspection support when required

  • Clean, organized work with minimal disruption

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A person using a screwdriver to work on an electrical circuit panel with multiple circuit breakers and wires.

Electrical Panel Changes

Outdated or overloaded electrical panels can lead to tripped breakers, limited capacity, and safety concerns. We perform electrical panel changes to ensure your system can handle today’s power demands safely.

  • Replacement of outdated or undersized panels

  • Improved electrical capacity and reliability

  • Code-compliant installation and labeling

  • Suitable for residential and commercial properties

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Side view of a blue house with two double-hung windows, electrical wires, and conduit pipes on the wall, with a small set of brick stairs leading to a porch, and green trees and a street in the background.

Service Upgrades

If your electrical service no longer meets your needs, a service upgrade can improve performance, safety, and future flexibility. We handle electrical service upgrades for homes and businesses throughout Essex County.

  • Increase available amperage

  • Support renovations, additions, and new equipment

  • Coordination with utilities when required

  • Fully code-compliant installations

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Electrical switch boxes with wires and dust, installed in a wall during construction or renovation.

General Electrical Repairs

From minor issues to ongoing electrical concerns, we provide dependable general electrical repair services to keep your system operating safely and efficiently.

  • Outlet, switch, and fixture repairs

  • Breaker and circuit issues

  • Power loss and intermittent electrical problems

  • Residential and commercial repairs

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Worker in orange gloves using a blue tool to repair or install an LED light fixture on the ceiling.

Indoor & Outdoor Lighting Installation

Proper lighting improves safety, usability, and appearance. We install and upgrade indoor and outdoor lighting systems for homes and businesses.

  • Interior lighting upgrades and replacements

  • Exterior and security lighting

  • Code-compliant wiring and installation

  • Energy-efficient lighting options

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White electric vehicle charging at a wooden wall with a black charging station and cable.

Electric Vehicle Charger Installation

Charging your electric vehicle at home or work should be safe and reliable. We install EV charging stations with proper load evaluation and code-compliant wiring.

  • Home and commercial EV charger installation

  • Electrical capacity assessment

  • Dedicated circuit installation

  • Safe, professional setup

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Hands working on wiring in electrical wall outlet, using a screwdriver on the wires.

Electrical Troubleshooting

Electrical problems aren’t always obvious. We provide thorough electrical troubleshooting to diagnose issues accurately and recommend the right solution.

  • Identify the source of electrical faults

  • Resolve recurring or intermittent issues

  • Prevent further damage or safety risks

  • Clear explanations and repair options

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Schedule Electrical Service

Whether it’s a repair, installation, upgrade, or inspection, William Harris Electrical Contractor is ready to help. Complete the form below to request service and we’ll be in touch shortly.