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 10-30-2010, 04:25 PM   #1
Newbie
 
Join Date: Oct 2010
Location: Boston, MA
Posts: 7
Rewards Points: 10
Default

Wiring bath fan to replace ceiling light


I have a question about wiring a new bath fan. It is replacing an existing light fixture that I don't plan to replace.

Here is a picture of the existing box: I tested with a non-contact circuit tester with the power on at the breaker box.



The original light was wired to the single black wire and to the group of white wires. It looks like the same incoming electric cable that supplies the group of mixed black and white wires contains the white wire for the old light fixture--although I'm not sure as two incoming cables kind of join together to enter at the same spot on the junction box.

It's hard to see but there are three armored BX cables coming in to the box and two black, newer looking electrical cables coming in.

What do I do to supply power to the junction box for the fan? It has a pretty small housing and couldn't hold all of these wires. Do I do a pigtail? It does not look like there is room for another wire to enter the existing junction box either. However, there is play in the existing wires--room to stretch to the box on the new fan, which you can see in the left corner of the picture.

I'm assuming that this junction box is where other devices in the house are connected. I see lines heading in various directions. I'm also assuming that the source of power for the old light is in this junction box rather than in the wall switch--that makes sense to me from seeing that one of the wires in there is always hot. Is that right?


Last edited by quinten; 10-30-2010 at 04:27 PM.
quinten is offline   Reply With Quote
Old 10-30-2010, 08:11 PM   #2
Graduate of Wiring 1-2-3
 
Join Date: Sep 2010
Location: New Hampshire
Posts: 31
Rewards Points: 25
Default

Wiring bath fan to replace ceiling light


You are going to keep the light and add a fan, right? The fan was/is connected to the single wire in the picture on the left, and the group of white and black wires in the center of the picture. Correct?

If that is accurate you could connect the fan into the same wire nuts as the light. Then the light and fan will always come on together.

Lurlene is offline   Reply With Quote
Old 10-30-2010, 08:19 PM   #3
Master Electrician
 
Join Date: Mar 2010
Location: Indiana
Posts: 2,894
Rewards Points: 2,044
Default

Wiring bath fan to replace ceiling light


Better get a voltmeter. More likely the black of the fixture was connected to the single wire on the left and the white of the fixture was connected to the gray bundle on the right.
brric is offline   Reply With Quote
Old 10-31-2010, 06:50 PM   #4
Newbie
 
Join Date: Oct 2010
Location: Boston, MA
Posts: 7
Rewards Points: 10
Default

Wiring bath fan to replace ceiling light


Okay I just did a "pigtail" connection. Pretty straightforward and I wanted to avoid re-wiring everything. Also you are correct about the neutral wires being where the original light was connected.

Last edited by quinten; 10-31-2010 at 06:55 PM.
quinten is offline   Reply With Quote
Reply

Tags
electical wiring


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
wiring a ceiling light that branches off to outlets What have I done Electrical 7 08-11-2009 08:24 PM
replacing single ceiling cylinder light with double ceiling cylinder light in kitchen Travlr234 Electrical 5 06-29-2009 08:14 AM
replace ceiling fan with ceiling light pglc General DIY Discussions 11 06-08-2009 06:12 PM
Bedrooms have no ceiling light, light switch controls one electrical outlet? notenoughtime Electrical 16 05-25-2009 12:09 AM
Wiring A Ceiling Fan, Receptacle, and Outside Light merlin6984 Electrical 9 03-26-2009 09:52 PM




Top of Page | View New Posts

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