Knob & Tube

Rewiring Makes a Difference

If your house or place of business is limiting your potential to thrive, Kirsch Electric will partner with you to revitalize that older house and breathe new life into it. Enjoy numerous modern conveniences at your disposal and sleep sounder knowing that your electrical system is modernized and safe.  Our ESA licensed technicians take time and effort to determine the most efficient method of household electrical wiring.

We offer:

  • Knob & Tube removal and replacement
  • Aluminum Wire treatment or replacement
  • Panel change and electrical service upgrades

Context:  Do you own or have you recently purchased a property that is over 60 years old?  Are you planning on selling a property that is over 60 years old?  Unless the house has been rewired, there is probably still active knob & tube wiring.

Definition: Knob & Tube wiring was the early standardized method of electrical wiring in Canada until the 1950’s; it is a simple 2 wire system that utilizes rubber insulation and ceramic parts to protect wires that pass-through wood frames.

  • Rubber insulation becomes brittle and breaks down over time. In addition to the wire covering deteriorating, these wires are connected by being soldered together and wrapped in electrical tape; after time, this tape either falls off or deteriorates.
  • There is no grounding protection for equipment; no ground wire to divert stray electricity and prevent shocks or risk of fire.
  • Knob & Tube used a 60 amp service; today a minimum 100 amp service should be installed.
  • 2 wire system consists of one black or hot wire and the other white or neutral wire to create a circuit. These wires are installed in free-air cavities to help with heat dissipation. With the addition of insulation in ceilings and walls, homeowners inadvertently contribute to the overheating and deterioration of these wires.
  • The dangerous symptoms of old knob and tube wiring include: cracked or broken tubes, sagging or frayed wires and broken sheathing that exposes live wires.
  • Renovations and additions over the years that have combined old and new wiring systems are not safe. Existing knob and tube circuits are overloaded due to the demand of additional electrical loads. This additional demand further deteriorates the electrical integrity of old wiring.

In addition to restoring your home or place of business to its former glory and making it safe, we can install new convenience outlets, efficient pot lights or perhaps kitchen under counter lighting.   For the home seller, we can provide you with a basic yet thorough rewire that is cost considerate with the end goal of increasing the selling potential of your house.

Process: Ideally it is best to rewire when a property is vacant because it allows our technicians to move through the house in a more expedient way.  However, given that this option is not readily available to everyone, we have developed an efficient system that minimizes disruption.  Our technicians rewire in such a way to cause minimal invasion to the home.  We patch all the small holes we are required to make in walls or ceilings to fish/navigate wires; only painting of patches may be required by the home owner.  We are meticulous about preserving plaster ceilings.  Our technicians wear boot covers, and use drop clothes to protect your floors.  They also cover your furniture and valued belongings with plastic to prevent unnecessary penetration of dust.  In the end, we take pride in the fact that your wiring appears to have been there all along.

At Kirsch Electric, we carefully review the wiring system and determine most efficient methods before we start each project. By communicating with home owners and taking the time before we begin our work, we ensure that our work is done efficiently and safely.  We provide in-home written estimates at no charge. Our technicians are licensed with the Electrical Safety Authority (ESA).  Upon completion we provide an ESA Inspection Certificate. If requested, we also provide a formal company letter that our customers can submit to their home insurance company which may potentially help with lowering home insurance premiums.

Contact us to learn more.