Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 05-26-2012, 01:58 PM   #1
Newbie
 
Join Date: May 2012
Location: British Columbia
Posts: 7
Share |
Default

Need help with bathroom exhaust fan/light box


Hi everybody,
I'm doing a bathroom reno. 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 control switch.
I have no idea where come these two hot wires from.
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   Reply With Quote
Old 05-26-2012, 02:09 PM   #2
Licensed electrician
 
Join Date: Sep 2007
Location: Maryland
Posts: 7,510
Default

Need help with bathroom exhaust fan/light box


You need to find the hot controlled by the switch and connect it to the black from the fan housing.

__________________
Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
Jim Port is online now   Reply With Quote
Old 05-26-2012, 02:16 PM   #3
Newbie
 
Join Date: May 2012
Location: British Columbia
Posts: 7
Default

Need help with bathroom exhaust fan/light box


Thanks Jim,
Just to clarify...
I'm a carpenter by trade and not so familiar with electrical terms.
What do you mean "hot controlled by the switch"?
You mean two blacks from two hot wires..?
otch is offline   Reply With Quote
Old 05-26-2012, 02:38 PM   #4
Master Electrician
 
Join Date: Mar 2010
Location: Toronto Ontario
Posts: 1,165
Default

Need help with bathroom exhaust fan/light box


well most likely what you have is an incoming two wire, an outgoing two wire and a two wire to the switch, what jims saying is that you need to hook into the "switch leg" from the switch, a picture will probably help but i assume that there's three black and three whites in the box from your description. Most likely the two "always on" blacks get hooked together with the white from the switch(should be identified as black) and the other two whites get wire nutted together with a pigtail out to the neutral for the light fan combo, the black comming from the switch gets hooked to the black for the light fan combo. This is how it should have been wired previously, if it wasn't then you may need to identify where the other two wires go before going any further.
__________________
Sarcasm is my friend
I'm here to learn too, i do mostly commercial/industrial/new construction and this place is a great way to pick up tips on residential from some good electrical minds. Excuse the spelling, my phone has a mind of it's own.
andrew79 is offline   Reply With Quote
Old 05-26-2012, 03:32 PM   #5
Newbie
 
Join Date: May 2012
Location: British Columbia
Posts: 7
Default

Need help with bathroom exhaust fan/light box


Thanks Andrew,
Very informative and helpful.
I did some Google search and got some ideas.
Looks like what I have is Power from the Fixture Connection.
Will try it on Monday when get back to the customer's house.
Thanks again.
otch is offline   Reply With Quote
Old 05-26-2012, 04:03 PM   #6
A "Handy Husband"
 
rjniles's Avatar
 
Join Date: Feb 2007
Location: South Carolina Low Country
Posts: 3,979
Default

Need help with bathroom exhaust fan/light box


Quote:
Originally Posted by otch View Post
Thanks Andrew,
Very informative and helpful.
I did some Google search and got some ideas.
Looks like what I have is Power from the Fixture Connection.
Will try it on Monday when get back to the customer's house.
Thanks again.
DANGER! Will Robinson.

A carpenter should not be doing electrical work on someone else's house.

__________________
Location:
Coastal South Carolina
rjniles is offline   Reply With Quote
The Following 2 Users Say Thank You to rjniles For This Useful Post:
andrew79 (05-27-2012), Jim Port (05-26-2012)
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Can I put my bathroom exhaust fan outlet where I want to? danielrg HVAC 9 04-07-2013 07:44 AM
Wondering if it makes economic sence to replace a bathroom exhaust fan ChrisJJ HVAC 0 06-14-2011 10:36 AM
worth it in terms of energy savings to replace bathroom exhaust fans? ChrisJJ Electrical 0 06-14-2011 10:17 AM
New wiring and switch for bathroom exhaust fan looking4help75 Electrical 9 06-27-2008 04:15 PM
Bathroom Exhaust Fan Questions AllGoNoShow Remodeling 10 11-11-2006 07:59 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.