Homeowner’s Guide to Knob and Tube Wire Replacement and Repair

knob and tube wiring

knob and tube wiring

-Knob and tube wiring system does not incorporate a ground. The ground wire on any circuit is the most important wire, as it is there for safety. Also, some electronic equipment requires a ground to operate correctly.

-Switched neutrals. Electricians in the early 1900’s would switch the neutral feeding a ceiling light instead of the hot wire, which is today’s standard. Switching the neutral, would turn off the light, but live voltage potential would still be present at the fixture. Making a dangerous situation for a homeowner that is trying to change the light fixture.

-Insulation becomes very brittle and breaks down when heated too much. Older light fixtures had no insulation in them to prevent overheating. These older light fixtures were usually not marked with a maximum wattage for light bulbs. Homeowners could be installing 100 watt bulbs in fixtures that were never meant to have such a high wattage bulb, the wiring above the ceiling fixture could break down, and sometimes the insulation would disintegrate.

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A digital version of the Knob and Tube Wiring Guide is available for purchase on Amazon.

A digital book that will take you through the entire re-wiring process including:

Knob and Tube Wiring

About the Author

Knob and Tube Wiring Specialist

Kuhlman Electrical Services has offices in Lynn and Weymouth. Trusted residential and commercial electricians serving all of Eastern Massachusetts.

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Jesse Kuhlman is a Master Electrician and owner of Kuhlman Electrical Services in Massachusetts. He started working as an Apprentice Electrician in grade school, helping his father Gary on weekends and summer breaks. After high school, Jesse attended college for a short time but ultimately decided to go full-time with the family business. Jesse has always said he learned from the best, and electrical is in his blood.

Jesse never thought he would write a book, but he was motivated by seeing homeowners struggle when going through the process of hiring an electrician and the abundance of misinformation out there. He hopes to assist in educate homeowners on the subject of residential wiring and hiring electricians.

Kuhlman Electrical services is now providing residential and commercial electrician services in all of Eastern Massachusetts including the South Shore, Boston and the North Shore.