How to Rewire Your Home Without Getting Electrocuted or Burning it Down

Introduction

Rewiring a home can be a daunting task, but with proper precautions it can be done safely. Electrical work should only be done by qualified professionals, but some minor projects can be DIY if you educate yourself and follow safety protocols. This article will provide an overview of home electrical systems, planning a rewire project, safety tips, and when to hire a professional.

Understanding Home Electrical Systems

• Electrical Service and Main Panel

  • The electrical service brings power from the utility lines outside your home to the main service panel. This panel contains circuit breakers or fuses that distribute electricity throughout the home.

• Wiring Circuits

  • Home electrical systems use 120V and 240V circuits. 120V powers most lighting, outlets, and small appliances. 240V is for large appliances like dryers, water heaters, and air conditioners.

• Common Wiring and Cable Types

  • Non-metallic sheathed cable (NM, Romex) is used for most home wiring. Armored cable (AC, BX) is more durable. Underground feeder cable (UF) connects outdoor items.

Planning a Rewire Project

• Reasons for Rewiring

  • Common reasons: outdated wiring, need for more circuits, poor connections causing lights to flicker.

• Developing a Plan

  • Evaluate electrical needs room-by-room. Plan layout of new circuits and placements of outlets/switches.

• Permits

  • Electrical permits are required for most rewiring jobs. Research your local permit process.

• Working with Professionals

  • For major rewiring, hire a licensed electrician to ensure safety and pass inspection. But you can do minor jobs yourself.

Safety Tips for DIY Electrical

• Turn Off Power

  • Turn off power at the main breaker panel. Use a contact voltage tester to be sure power is off.

• Use Caution and Personal Protective Equipment

  • Wear rubber-soled shoes, gloves, and safety goggles when working with electrical wiring.

• One Wire at a Time

  • When disconnecting wires, only work on one at a time to avoid confusion.

• Proper Connections

  • Use proper sized wire nuts or crimp connectors. Make tight connections and secure wires.

When to Hire a Professional

• For major rewiring jobs, it's essential to hire a licensed electrician to ensure the work is done properly and safely. Stick to minor projects if you want to DIY.

• Specifically, you should have a professional do rewiring that involves:

  • The main service panel

  • Heavy appliances like HVAC systems

  • Swimming pools or outdoor wiring

Conclusion

Rewiring a home is complicated, but can be done safely if you educate yourself, get proper permits, use extreme caution, and call in a professional electrician when needed. Don't attempt electrical work beyond your skill level.