I have an older home built in the 1920s that still has the original knob and tube wiring. This obsolete wiring system can be a fire hazard and limits my ability to use modern appliances and devices. I want to rewire my home but am unsure of the process. Here is what I learned about safely rewiring a home with old knob and tube wiring.

Understanding Knob and Tube Wiring

Knob and tube wiring was commonly installed in homes built before 1950. It features:

Some key problems with knob and tube wiring include:

Upgrading is recommended. Rewiring increases safety and allows modern electrical use.

Hiring an Electrician

Hiring a professional electrician is highly recommended over DIY. Rewiring a home is complex and potentially dangerous.

Key reasons to hire a pro:

I obtained quotes from 3 licensed electricians before selecting one. They assessed my home's wiring and explained the plan.

Preparing for a Rewire Project

Before wiring, I needed to:

Safety Precautions

I set aside a full week for the project. Actual rewiring took 3 days with prep work on either end.

New Wiring Installation Process

The electrician team took the following steps to rewire my home:

1. Shut Off Power

They arrived wearing protective gear and verified power was off with a voltage tester. All original fuses were removed to ensure knob and tube wires were not live.

2. Run New Wires

Modern NM cables were routed from the electrical panel through walls and ceilings to each fixture. Existing knob and tube was left in place for removal later.

3. Install Devices

4. Connect Circuit Breaker Panel

The main panel was upgraded to fit modern breakers. Each circuit was carefully labeled.

5. Remove Old Wiring

Once fully operational, they returned on day 3 to remove the obsolete knob and tube wires. This prevented any risk of accidental shock.

6. Inspection

The completed rewire work passed inspection on the first try. The inspector checked all visible wiring as well as outlets and fixtures.

The entire house now has modern wiring ready for today's electricity needs and safety standards. I can use high-power appliances without fear of hazardous overloaded knob and tube circuits. The potential fire risk has been eliminated as well.

Cost to Rewire a House with Knob and Tube

My 1,200 square foot home cost $8,400 in total for parts and labor. This broke down to:

On average, rewiring a house runs $8-15 per square foot depending on:

While expensive, this essential upgrade greatly improved safety. It also increased my home's value and functionality.

Key Takeaways

I am relieved to have full peace of mind knowing my home's electrical system is now completely up-to-date and meets the latest safety codes. The investment was worthwhile. Let me know if you have any other questions!