Changing Ballast on Fluorescent Ceiling Light

Reply

  #1  
Old 07-16-13, 07:42 AM
Member
Thread Starter
Join Date: Jan 2007
Location: Kingston, Ontario Canada
Posts: 121
Received 0 Votes on 0 Posts
Changing Ballast on Fluorescent Ceiling Light

Current layout of light in ceiling:

2 Light tubes
1 T12 Ballast
Wiring:

2 Yellow
1 Black
1 White
2 Blue
2 Red

2 Yellow are on one end; black/white midway; 2 blue and 2 red on other end, 1 blue and 1 red going to each side of end.

New T8 Ballast:

1 Black
1 White
other end has 2 Blue and 1 Red.

Power is off, my main question is how to wire the new ballast as their are more wires in the existing setup. Tried looking for a video online with no luck. The diagram on the new unit does not show any yellow wires in the diagram and shows one red not 2 red that are on the existing ballast. Hope this is clear enough as I am stumped as to what to do for the connection. Black to black and white to white is easy enough. Thanks all.
 

Last edited by 06Honda; 07-16-13 at 08:14 AM.
Sponsored Links
  #2  
Old 07-16-13, 08:14 AM
ray2047's Avatar
Group Moderator
Join Date: Mar 2006
Location: USA
Posts: 33,597
Received 13 Votes on 11 Posts
Can you post a clear, easily read picture of the diagram on the new ballast? http://www.doityourself.com/forum/li...-pictures.html Basicly you want to ignore colors to the tombstones and concentrated on how the tombstones are wired. In the new diagram are the two pins on the tombstone shunted (connected together) both to one wire? if so that is what you need to do.
 

Last edited by ray2047; 07-16-13 at 08:29 AM.
  #3  
Old 07-16-13, 09:37 AM
Member
Thread Starter
Join Date: Jan 2007
Location: Kingston, Ontario Canada
Posts: 121
Received 0 Votes on 0 Posts
The tombstones are 2 on each end separate. One side has the 2 yellow going to one, the other side has 2 red going to 1 and 2 blue going to the other. So is it a matter of cutting the existing yellow and capping, connect the 2 blue to the 2 blue and connect the 1 red to the 2 red and capping the connections? Took a couple of pics with my macbook pro standing on the ladder.
 
Attached Images   

Last edited by 06Honda; 07-16-13 at 10:06 AM.
  #4  
Old 07-16-13, 11:26 AM
ray2047's Avatar
Group Moderator
Join Date: Mar 2006
Location: USA
Posts: 33,597
Received 13 Votes on 11 Posts
Could you post a picture of the new ballast's diagram.
 
  #5  
Old 07-17-13, 04:59 AM
Member
Thread Starter
Join Date: Jan 2007
Location: Kingston, Ontario Canada
Posts: 121
Received 0 Votes on 0 Posts
Another image

Here is the wiring on the new ballast.
 
Attached Images  
  #6  
Old 07-17-13, 07:35 AM
ray2047's Avatar
Group Moderator
Join Date: Mar 2006
Location: USA
Posts: 33,597
Received 13 Votes on 11 Posts
The wiring is obvious in the diagram if you look closely.

At each tombstones the two wires from the tombstone are connected together and treated as one wire. (Shunted as said earlier.)

On one end of the fixture those wires are all connected to the red wire of the new ballast.

On the other end of the light the pair of wires from one tombstones goes to the blue wire. And the other pair of tombstone wires is connected to the black wire on the end of the ballast with tree wires.

Your power in goes to the end of the ballast with only a black and white wire.

Picture was hard on my eyes but I am assuming on the other end I saw black blue red.
 
  #7  
Old 07-17-13, 08:31 AM
Nashkat1's Avatar
Member
Join Date: Mar 2012
Location: USA
Posts: 8,470
Received 1 Vote on 1 Post
Picture was hard on my eyes but I am assuming on the other end I saw black blue red.
I'm seeing blue blue red on the load side of the ballast.
 
  #8  
Old 07-17-13, 08:33 AM
Member
Thread Starter
Join Date: Jan 2007
Location: Kingston, Ontario Canada
Posts: 121
Received 0 Votes on 0 Posts
Thanks everyone very much were up and running with the repair be completed after following the advice.
 
  #9  
Old 07-17-13, 09:35 AM
ray2047's Avatar
Group Moderator
Join Date: Mar 2006
Location: USA
Posts: 33,597
Received 13 Votes on 11 Posts
Thanks for letting us know how it came out.
 
Reply

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


Thread Tools
Search this Thread
Display Modes
 
Ask a Question
Question Title:
Description:
Your question will be posted in: