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Commentator
India - Member - Electrical Energy

Join Date: May 2007
Location: Tamilnadu
Posts: 57

Safety on Ceiling Fans

08/10/2007 11:14 AM

This discussion is essential to ensure safety on the ceiling fans.Now a days the ceiling fans are used in all the schools,instituion, hostel, lab area etc.In some places the ceiling fans are fall down due to wearing of Bolts either at fan head or at top/bottom of down rod.Hence please write about various types of quality Bolts avilable on the market .Any other addtional support is possible apart from bolt?It should be feasible,less price, easy to implement in the existing fans.The Crompton make introduce one rope, where as, orient fans providing clamp support both are not giving full safety.I am expecting the sturdy Bolts & should not affected on rotation of fans or any other protective measure may please be projected.

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Guru
Engineering Fields - Electrical Engineering - New Member

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#1

Re: Safety on Ceiling Fans

08/10/2007 3:23 PM

The ceiling fans in my house are not mounted with bolts. The end of the fan rod is a ball that sits in a socket. The socket is bolted to the ceiling cross beams. The ball can rotate in the socket so no vibration is transmitted to the socket bolts, so the bolts don't fail.

Hope this helps.

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Anonymous Poster
#3
In reply to #1

Re: Safety on Ceiling Fans

08/11/2007 1:56 AM

The ball arrangementin the fan rod is not available in indian market.Please send the details of fan rod and socket with video view, Dimensions etc if possible.Also indicate website address and contact number of above supplier.

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Guru
United States - Member - I am a Yankee Doodle Boy. Engineering Fields - Manufacturing Engineering - Old School is the best school. Safety - ESD - Safety Mgr that keeps the peace Hobbies - DIY Welding - My Motto:

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#2

Re: Safety on Ceiling Fans

08/10/2007 4:50 PM

In other industrial applications I have seen where the fan is attached to the ceiling trusses, it can transfer alot of vibration as they are indeed attached with bolts or through the junction box.

The best solution I have personally seen and used is the Safety wire method. You can easily attach a cable to the standoff on 2 sides with screws (this is important to keep it somewhat stable if it does become detached) and then again to the trusses with screws (keeping the cable loose enough to notice if the fan falls and not to disturb the balance).

This one leaves me feeling comfortable at least that the fan would not fall far enough to hurt anyone and still control the rotational forces of the fan should it become detached.

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Guru
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#4

Re: Safety on Ceiling Fans

08/11/2007 2:27 AM

Like Bridges-should not collapse.

But they do-at times.

Can avoid all such unplanned ones.

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Guru
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#5

Re: Safety on Ceiling Fans

08/11/2007 6:26 AM

It really depends on what you want to connect to! Wooden beams, metal pearling, RSJs, plaster board, etc. Also with fans, the longer the down rod, the more stress you put on the fastenings! ( think of a lever! )

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Commentator
India - Member - Electrical Energy

Join Date: May 2007
Location: Tamilnadu
Posts: 57
#6
In reply to #5

Re: Safety on Ceiling Fans

08/11/2007 1:04 PM

The fans to be mounted on concrete RCC roof ceiling with metal fan box. Please try to give solution since safety is very much essential for all.The discussion is mainly required for school childran.

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Power-User

Join Date: Jul 2007
Location: Orlando
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#7

Re: Safety on Ceiling Fans

08/11/2007 1:38 PM

Some good suggestions here. One method of providing some sense of security would be to add something like a stainless steel spiral wound wire lanyard between a second upper mounting point and a lower. The wire could be crimped with an appropriate eyelet or other suitable mounting fixture.

But then again, I've never heard of a ceiling fan mounting breaking loose or whatever. My house full of ceiling fans, for some 30+ years.

I think most all of the fans available in the US are mfr'd in Asia. They should be available in India. Good luck with this!

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Associate

Join Date: Jul 2007
Location: Birmingham, Alabama
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#8

Re: Safety on Ceiling Fans

08/11/2007 3:08 PM

The NEC requires ceiling fans be secured with a method "other than box bolts" unless the box is "listed" (approved for that purpose). Since the "listed" boxes use 10/32 bolts which are only slightly larger than the standard 8/32 bolts I've been using standard octagon boxes and 3" long 1/4" diameter lag bolts connected directly to the fan yokes. An additional safety chain is an excellent idea if it makes you sleep better.

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Guru
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#9

Re: Safety on Ceiling Fans

08/13/2007 7:05 PM

Compared to the number of ceiling fans used in India the number of falling fans is really very few , but it happens with few new models. I have never experienced any older models of fans (properly installed and maintained ceiling fans) falling .I am telling this out of my 40 years of Industrial experience where my department was maintaining many thousands of fans in our offices workshops and residential buildings . There was few stray incidents of falling of fans happened and proper inquiry was conducted and the finding was most of the cases were due to faulty installation and lack of preventive maintenance. In the new models value engineering had been the culprit where manufacturers were using fasteners of inadequate size for cost reduction.In case any ceiling fan incident is observed due to manufacturers fault such cases should be reported immediately to the manufacturers for their quality improvement.In Hospitals nd schools preventive checking should be carried out systematically.Our organisation has a preventive checking before the start of summer for all fans and proper records are maintained systematically to avoid falling of fans.If you use only good quality fans and if they are properly installed and maintained no ceiling fan will fall.What really happens is that untrained workers poor supervision and use of poor quality material are the root cause and should be checked to avoid falling of fans.

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Commentator
India - Member - Electrical Energy

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Location: Tamilnadu
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#10
In reply to #9

Re: Safety on Ceiling Fans

08/14/2007 1:04 PM

I accept all your points in the maintenace point of view.But i would like to know about additional devolopment in this point in the marketing area.Your points very much valid.This sort of records are maintained.Thank you verymuch.

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