Need Help To Re-connect Bathroom Fan/light Box - Electrical - Contractor Talk

Need Help To Re-connect Bathroom Fan/light Box

 
Thread Tools Search this Thread Display Modes
Old 05-26-2012, 01:14 PM   #1
Registered User
 
otch's Avatar
 
Trade: carpentry
Join Date: Apr 2007
Posts: 1
Rewards Points: 10

Need Help To Re-connect Bathroom Fan/light Box


Hi everybody,
I'm doing a bathroom reno. And need to replace existing ceiling light box with a new fan/light unit.
When I opened up ceiling there were three wires connected to the light box. Two hot wires and one from the switch.
I have no idea where come these two hot wires.
When I connected all three to the fan/light box, the fan/light is on constantly. No reaction to the switch.
How should I re-connect the wiring, so that the box works from the switch.
I would greatly appreciate any help.
Thank you.
otch is offline  

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ContractorTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

   

Advertisement

 

Old 05-26-2012, 01:20 PM   #2
I own stock in FotoMat!
 
480sparky's Avatar
 
Trade: 132 on Bush, I've got him at gunpoint!
Join Date: Jan 2009
Location: Iowa
Posts: 12,166
Rewards Points: 12,348

Re: Need Help To Re-connect Bathroom Fan/light Box


Time to call an electrician.

Advertisement

__________________
This post has been modified from its original version. It has been formatted to fit this screen and edited for content.
480sparky is online now  
Old 05-26-2012, 03:28 PM   #3
Member
 
SemiRetiredEL's Avatar
 
Trade: Electrial Contractor (master)
Join Date: Nov 2009
Posts: 77
Rewards Points: 75

Re: Need Help To Re-connect Bathroom Fan/light Box


Quote:
Originally Posted by otch View Post
Hi everybody,
I'm doing a bathroom reno. And need to replace existing ceiling light box with a new fan/light unit.
When I opened up ceiling there were three wires connected to the light box. Two hot wires and one from the switch.
I have no idea where come these two hot wires.
When I connected all three to the fan/light box, the fan/light is on constantly. No reaction to the switch.
How should I re-connect the wiring, so that the box works from the switch.
I would greatly appreciate any help.
Thank you.
Be sure to turn off the breaker when handling wires!

You must have power (hot & neutral) available at the ceiling box because the light worked OK before. Separated all 3 wires and using an ordinary incandescent lamp with insulated alligator leads connected, determine if the light will work at the ceiling box.

If so one of these leads (usually white) is the neutral. Later, connect it to the white on the fan/light.

Now, leave the test lead connected to the neutral and test the leads coming from the switch. One of them should light up your test lamp depending on the switch position. This is called a switched lead.

I suspect you only have one switch so both the exhaust fan and the light will have to be connected to the switched lead and come on together.

If you still have an extra wire in the ceiling after everything is working, check to see if other lights or receptacles are working.

If power is fed to the ceiling first, only two wires to the switch are needed to make the light work.

Report back what you see maybe we can do even better on this project.
SemiRetiredEL is offline  
Sponsored Links
Advertisement
 
Old 05-30-2012, 06:09 AM   #4
Electrical Contractor
 
Speedy Petey's Avatar
 
Trade: Electrical
Join Date: Sep 2003
Location: NY State
Posts: 2,411
Rewards Points: 1,244

Re: Need Help To Re-connect Bathroom Fan/light Box


Best to leave this to an electrician.
There is NO reason that you need to be messing with this stuff.
__________________

Speedy Petey is offline  
Old 05-30-2012, 06:13 PM   #5
Pro
 
TxElectrician's Avatar
 
Trade: Electrical
Join Date: May 2008
Location: Central Texas
Posts: 7,373
Rewards Points: 550

Re: Need Help To Re-connect Bathroom Fan/light Box


Semi, you may want to watch giving advice to someone without knowing anything about their abilities. The OP stated he has" no idea where come these hot wires". If he is not able to even find that out I think 480 offered the best advice.

I'm all for helping someone if they have proven themselves capable, but not with a one time poster.
TxElectrician is offline  
Old 05-30-2012, 06:23 PM   #6
Fentoozler
 
Celtic's Avatar
 
Trade: Professional Pie and Pastry Taster
Join Date: May 2007
Location: New Jersey
Posts: 5,623
Rewards Points: 2,000

Re: Need Help To Re-connect Bathroom Fan/light Box


Call an electrician before you set something on fire....could be the house....could be yourself....etc.
__________________


The UD is quite possibly man kinds finest accomplishment.
Celtic is offline  
Old 05-30-2012, 06:55 PM   #7
I own stock in FotoMat!
 
480sparky's Avatar
 
Trade: 132 on Bush, I've got him at gunpoint!
Join Date: Jan 2009
Location: Iowa
Posts: 12,166
Rewards Points: 12,348

Re: Need Help To Re-connect Bathroom Fan/light Box


__________________
This post has been modified from its original version. It has been formatted to fit this screen and edited for content.
480sparky is online now  
Old 05-30-2012, 07:08 PM   #8
Pro
 
rselectric1's Avatar
 
Trade: Licensed Electrical Contractor and Remodeler
Join Date: Sep 2009
Location: Chicago Suburbs
Posts: 11,841
Rewards Points: 874

Re: Need Help To Re-connect Bathroom Fan/light Box


Thanks for posting on ContractorTalk.com. The Moderators of this forum would prefer if you post Do It Yourself related topics on our sister site www.DIYChatroom.com

ContractorTalk.com is designed for professional contractor's to discuss issues and topics related to the construction and remodeling industries. Many of our professional contractors are also members at DIYChatroom.com and are looking forward to assist you with your needs.

Please take a moment to post your question at www.DIYChatroom.com If your not already a member of DIYChatroom.com you can sign up for a free account by going to http://www.DIYChatroom.com/register.php/

We apologize for any inconvenience that this may have caused. This thread has been closed. ____________

Advertisement

__________________
220...221...whatever it takes!
rselectric1 is online now  


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bathroom Walls weeping... HELP hbl164 Painting & Finish Work 19 09-08-2016 11:40 AM
Connect sewer drain to house cincyoh Plumbing 1 03-18-2012 07:32 AM
dripping bathroom fan.... ApgarNJ General Discussion 37 12-10-2011 11:45 AM
Bathroom Odor? ChicagoBaths Remodeling 20 01-02-2010 05:50 AM

Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for
PROFESSIONAL CONTRACTORS ONLY!

At DrywallTalk.com we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created www.DIYChatroom.com DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?