Latest Discussions : Electrical & Lighting


03:41PM | 03/12/03
Member Since: 03/11/03
5 lifetime posts
We recently purchased a 1927 Tudor in Madison Wisconsin and the house still has the original knob and tube wiring. We got bids to rewire the entire house and based on the cost and our discussions with others, we decided NOT to upgrade the original knob and tube. When the electrician was going through the house I mentioned that we wanted to install a ceiling fan in our second floor bedroom. The electrician said under no circumstances ever install a ceiling fan with knob and tube wiring (even though we did in our other house). Anyhow, the time has come to make a decision. My wife is convinced the electrician made this comment to scare us into updating our wiring. She might be right, but I’m curious to hear what others think.

I realize we probably should have updated the knob and tube, then this wouldn’t be an issue. But here we are. So do people think it’s wise to install a ceiling fan or not? If not, what really is the issue? Is it vibration? Electricity usage? What?


04:07PM | 03/12/03
Member Since: 03/10/03
9 lifetime posts
hi i have knob and tube wiring and i installed 2 ceiling fans and planning on installing few more


04:13PM | 03/12/03
Member Since: 03/11/03
5 lifetime posts
So I've been reading more about my dilemma, and I'm guessing the real issue is going to be whether or not the old junction box in the ceiling is going to be able to support the weight of a ceiling fan. The box is small and definitely old. At least we do not want to install a very large ceiling fan?

I'm curious to hear what others will have to say.

Thanks for letting me know that you've gone this route without any troubles.


04:02AM | 03/13/03
Member Since: 03/13/00
1674 lifetime posts
You can get a new junction box that's made to support a ceilig fan for a small price. They come in a variety of styles, and you can find one that will replace your existing box without having to tear up the ceiling.


04:07AM | 03/13/03
Member Since: 03/11/03
5 lifetime posts
rpxlpx thanks for the suggestion! So am I to assume you think it's O.K. to install a ceiling fan with knob and tube wiring, or are you just responding to my latest thoughts about the junction box being old and tiny?

So far no one's been horrified by the knob and tube / ceiling fan combo?

Thanks for taking the time to reply!


09:59AM | 03/20/03
Member Since: 03/19/03
1 lifetime posts
I've been in the business for 25 years and there is absolutely no problem with installing a ceiling fan using knob and tube wiring. As mentioned by others, you definitely should replace the ceiling box with an approved box for ceiling fans (there are many to choose from).

Happy Wiring!!


02:02AM | 03/30/03
Member Since: 03/11/03
5 lifetime posts

Thanks for the reply. We're going to forge ahead and do it! I'm going to try to fine a small replacement box that's been approved for ceiling fan use and go. The ceiling fan that we want to install is tiny so that makes me feel even better. I realize they all still vibrate, but hopefully it won't be bad with a tiny fan.

Thanks for taking the time to reply,



12:03AM | 07/07/17
Problem with existing nob tube wiring,system is ungrounded.Spices may exist in ceilings, walls,without being enclosed in boxes.Also many times nob tube wiring ,hot wire runs continues to light fixture neutral wire is switched. ELECTRICIAN

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