ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
From an outsider- How does tipping work?
by HotLine1 - 12/04/20 01:09 PM
Thought this was funny
by HotLine1 - 12/04/20 12:55 PM
Happy Thanksgiving
by Trumpy - 12/02/20 04:11 AM
Where is Everyone?
by Trumpy - 12/02/20 03:51 AM
What does your work place look like?
by Trumpy - 12/02/20 03:42 AM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
1 registered members (HotLine1), 23 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
Ceiling Fan on T-stat wire #107423 05/02/04 05:25 PM
Joined: Oct 2000
Posts: 3,632
Admin Offline OP
These are pics of a ceiling fan, which the homeowner told me was installed by the previous homeowner... The wire running the fan is none other that "thermostat wire"! [Linked Image] I advised her to keep it unplugged until she could have the installation done properly! Coincidentally, This wire is also running 2 other ceiling fans besides the one pictured...

-Randy (aka Lostazhell)
[Linked Image]

[Linked Image]

[This message has been edited by Webmaster (edited 05-02-2004).]

2017 / 2014 NEC & Related Books and Study Guides
Re: Ceiling Fan on T-stat wire #107424 05/02/04 06:32 PM
Joined: Aug 2002
Posts: 1,081
ThinkGood Offline
No. Can't be. No way. NO way. NO WAY...

Re: Ceiling Fan on T-stat wire #107425 05/03/04 06:19 AM
Joined: Dec 2000
Posts: 4,286
electure Offline
Is this is in a mobile home?

Re: Ceiling Fan on T-stat wire #107426 05/03/04 09:53 AM
Joined: Aug 2002
Posts: 1,691
SvenNYC Offline
Just how _thin_ is T-stat wire?

Is it about the same size as bell wire used for telephones? I'm amazed it hasn't overheated and melted. [Linked Image]

Nice heavy-duty plug....too bad they couldn't have at least used heavy-duty cord if they were going to do that sort of stupidity.... [Linked Image]

Re: Ceiling Fan on T-stat wire #107427 05/03/04 10:50 AM
Joined: Feb 2004
Posts: 1,436
Lostazhell Offline
Scott.... Yes it is [Linked Image]

Sven.... Typical T-stat wire is 18-22AWG Solid.. typically 2 pair in a cable like this... I was amazed myself!, considering this stuff is only rated for 24V! & this was running ceiling fans in 2 other rooms! [Linked Image]


Re: Ceiling Fan on T-stat wire #107428 05/03/04 11:28 AM
Joined: Mar 2004
Posts: 391
BigJohn Offline
Don't you guys recognize a combination unit when you see one? That is a fan system plus surface mount radiant heating! [Linked Image] [Linked Image]

That really is incredible. I bet those fans turned at about one revolution per year on their highest setting....


Re: Ceiling Fan on T-stat wire #107429 05/03/04 02:10 PM
Joined: Sep 2003
Posts: 650
winnie Offline
Guys, have you ever looked up the ampacity of 18ga wire???

20ga wire will _easily_ carry the current needed to run a fan. The voltage drop won't even be too bad if the length is less than a few 10s of feet.

When following the NEC (as well as good engineering practise), circuit conductors need to be sized to carry the load current, to have long useful life without failure, to survive expected faults, to remain safe even in fault conditions, etc. If you give up all of these various safety enhancements, you will still have a system that works.

If running 16A through 14ga wire resulted in instant fire, there would not be all that many hack electricians around, [Linked Image] and we would never be able to have fun discussions about tap conductor rules. [Linked Image] [Linked Image] [Linked Image]


Re: Ceiling Fan on T-stat wire #107430 05/03/04 03:12 PM
Joined: Jan 2003
Posts: 4,391
iwire Offline
If you give up all of these various safety enhancements,

[Linked Image] LOL [Linked Image]

Yeah those darn 'safety enhancements' burn up my time and waste our natural resources. [Linked Image]


Bob Badger
Construction & Maintenance Electrician
Re: Ceiling Fan on T-stat wire #107431 05/15/04 03:31 AM
Joined: Feb 2004
Posts: 1,436
Lostazhell Offline
All those darn safety enhancements put food on my table & pay the bills! [Linked Image] If people started figuring out how to do things the right way on their own, the service industry would'nt be half as lucrative! Not to mention we wouldn't have half as many photos to bicker about here! [Linked Image] I guess the good thing is, that people call us to make things work again, we have a chance to make some difference, maybe talk a little sense into the DIYer, explain "why" things are supposed to be a certain way.... I do it almost daily! Thankfully, I've only been called a couple times for repairs after an actual fire.. & I've seen so many more things that made me wonder why they weren't ablaze already!


Re: Ceiling Fan on T-stat wire #107432 05/15/04 10:35 AM
Joined: Apr 2001
Posts: 518
John Steinke Offline
I just installed such a fan yesterday.
The motor was rated at about 1.5 amps, plus a 60 watt bulb. So, we're looking at 2 amps total. Three such fans would be about 6 amps.
From an engineering standpoint ONLY, #18 wire ought to be able to handle about 7 amps. Therefore, I'm not surprised that this unit ran fine, or that there are no signs of overheating.
Of course, there are still the issues of insulation rating, mechanical protection, and short-circuit protection. The breaker is still let 20 amps go through the 7 amp wire- which would allow the wires to imitate toaster filaments.
Need to be fixed? Absolutely. End of the world? I don't think so.

Page 1 of 2 1 2


2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman


Member Spotlight
Posts: 44
Joined: July 2013
Show All Member Profiles 
Top Posters(30 Days)
Trumpy 20
Popular Topics(Views)
272,228 Are you busy
206,116 Re: Forum
194,105 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3