Knob-and-tube wiring (or K&T wiring) is an early standardized method of electrical wiring in buildings, in common use in North America from about 1880 the the early 1940’s.” 

Many electricians continued to use knob and tube wiring even up into the 70’s for new home construction. 


When evaluating and repairing knob and tube wiring we look for (and implement) several things:

– Is the wiring covered or encapsulated in any way by building insulation which will prevent proper heat dissipation? If so, we try to work with the customer to find a way to mitigate this problem.

– What kinds of loads are placed on this system and can these loads be minimized by the use of LED bulbs, as well as, smaller breakers/fuses and supplementing the receptacle outlets with new circuits? 

– We try to add GFCI & AFCI breakers/devices to help protect against shock and fire hazards. Adding three additional layers of protection to the existing short-circuit and over-current protections.

– We try to evaluate the condition of the existing knob-and-tube wires, splices and boxes. Any improper splices, insulators, or connections need to be corrected.