07/08/2019
Well it’s Monday and time for another great “Home Inspector Tip of the Week”
So you are out shopping for a home with character and that has a timeless design of days gone by.
Wow.....biff bam boom....Wala you’ve found it. The home is a big and beautiful 1929 home with a finished attic and oozing with personality. What else could it be oozing with....wait for it.....wait for it.....K**b and Tube Wiring. What’s that you ask, with that blank deer in the headlights kinda look????? Sit back and let me splain it to you Lucy.......
K**b-and-tube wiring (sometimes abbreviated K&T) is an early standardized method of electrical wiring in buildings, in common use in North America from about 1880 to the early 1940s. It consisted of single-insulated copper conductors run within wall or ceiling cavities, passing through joist and stud drill-holes via protective porcelain insulating tubes, and supported along their length on nailed-down porcelain k**b insulators (Hence the name K**b and Tube). Where conductors entered a wiring device such as a lamp or switch, or were pulled into a wall, they were protected by flexible cloth insulating sleeving called loom. The first insulation was asphalt-saturated cotton cloth, then rubber became common. Wire splices in such installations were twisted together for good mechanical strength, then solderedand wrapped with rubber insulating tape and friction tape (asphalt saturated cloth), or made inside metal junction boxes.
So now that you know what it is, you should also know that it should NOT be used in a home anymore. The wiring has since degraded and has usually been hacked up and hacked into by every homeowner since it was new. The wiring is meant to NOT be installed under, through, or enclosed in insulation. Why....the wiring is meant to be used in open air due to the current raising the temperature of the wiring. Wires that get hot and that are covered with an insulating medium could possibly cause a FIRE....not good.
So I tell you this to help educate and inform. If you are shopping for that old home make sure you.....
1. Read the disclosure to see if the owner is aware of any K&T wiring or if the wiring has been removed.
2. Make sure you get a Home Inspection by a Qualified Educated Home Inspector that takes time and is working on YOUR behalf.
3. Said inspector should be aware that most people tend to make K**b and Tube Wiring NOT visible. Such as they will Run new Romex Wiring from the Electric Panel to a junction box in the basement - Then leave the original K&T Wiring from the junction box to the fixture, outlet, or switch.
4. Make sure Said Inspector is Able to Access the attic. Most times the visible LIVE K&T Wiring can be found in the attic.
5. Another giveaway is usually “Ungrounded” Outlets (two prong) in the walls and possibly floors of the home.
My advice is to ALWAYS have a Home Inspection when you are buying a home - ALWAYS do your research and find the Home Inspector you feel is most Qualified. The cheapest guy is usually not the most Qualified.
Tune in weekly for some great tips that should help you through the process a little easier and be better informed.