CLICK HERE AND JOIN OUR COMMUNITY TODAY, IT'S FREE!
Go Back   Electrician Talk - Professional Electrical Contractors Forum > Electrical Forum > General Electrical Discussion

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-17-2011, 02:46 PM   #1
Member
 
Join Date: Mar 2011
Location: nc usa
Posts: 88
Rewards Points: 75
Default t12 ballast replacement question

ive got a few older t12 2 lamp fixtures that need ballasts. Differently than new electronic replacement ballasts, the existing ballasts have 1 blue lead and 1 red lead, and obviously a line and neutral. The electronic replacements ive been able to find have 2 blue and 1 red lead. Can i run these by capping off the unused blue lead? Being fairly new to this, I havent seen any of these before. Thanks for any help you may be able to give.

Also, i have a new t12 electronic replacement laying around so i gave it a shot by using both blue leads to the fixture blue lead, red on ballast to red on fixture and they burned fine for a few them went out. Im assuming the thermal protection in the ballast caused this.

Any help would be greatly appreciated.

adamv7010 is offline   Reply With Quote
Join Contractor Talk

Join the #1 Electrician Forum Today - It's Totally Free!

ElectricianTalk.com - Are you a Professional Electrical Contractor? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's the leading place for electricians to meet online. No homeowners asking DIY questions. Just fellow tradesmen who enjoy talking about their business, their trade, and anything else that comes up. No matter what your specialty is you'll find that ElectricianTalk.com is a great community to join. Best of all it's totally free!

Join ElectricianTalk.com - Click Here JOIN FOR FREE


Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ElectricianTalk.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!

Old 04-17-2011, 02:50 PM   #2
Sideways Sparky
 
farlsincharge's Avatar
 
Join Date: Dec 2010
Location: SK Canada
Posts: 1,404
Rewards Points: 524
Default

8' fixtures?

There should be a diagram present right on the ballast

farlsincharge is online now   Reply With Quote
Old 04-17-2011, 02:50 PM   #3
Senior Member
 
Join Date: Mar 2011
Location: Central Florida
Posts: 222
Rewards Points: 156
Default

you'll need to rewire the tombstones, to make it work correctly, the new ballast lights the lamps independantly
Techy is offline   Reply With Quote
The Following User Says Thank You to Techy For This Useful Post:
The Lightman (04-18-2011)
Old 04-17-2011, 02:53 PM   #4
Member
 
Join Date: Mar 2011
Location: nc usa
Posts: 88
Rewards Points: 75
Default

yes but nothing i can find has only 1 blue lead and only 1 red lead. However it does say for "N1" operation cap unused blue lead. im not familiar with what n1 operation is
adamv7010 is offline   Reply With Quote
Old 04-17-2011, 02:55 PM   #5
Moderator
 
Speedy Petey's Avatar
 
Join Date: Jan 2007
Location: NY State
Posts: 9,055
Rewards Points: 2,030
Default

Just follow the wiring diagram on the ballast. EVERY ballast has one.
Speedy Petey is offline   Reply With Quote
The Following 2 Users Say Thank You to Speedy Petey For This Useful Post:
John Valdes (04-18-2011), randas (04-17-2011)
Old 04-17-2011, 02:56 PM   #6
Sideways Sparky
 
farlsincharge's Avatar
 
Join Date: Dec 2010
Location: SK Canada
Posts: 1,404
Rewards Points: 524
Default

I'm going to go out on a limb and say N1 is for 1 lamp.
1 blue to each tombstone on one end and the red to both on the other.
farlsincharge is online now   Reply With Quote
Old 04-17-2011, 03:01 PM   #7
NRA Member
 
backstay's Avatar
 
Join Date: Feb 2011
Location: Wonderful Northern Minnesota
Posts: 7,723
Rewards Points: 2,016
Default

Just did 4 of these. The two blues go to the lamps on one end(one wire to each holder), the red goes to the other end(the one red wire to both lamps). The hot and neutral are now going to the lamps on one end. They will have to be cut and run directly to the ballast.
backstay is offline   Reply With Quote
The Following User Says Thank You to backstay For This Useful Post:
adamv7010 (04-17-2011)
Old 04-17-2011, 03:02 PM   #8
Member
 
Join Date: Mar 2011
Location: nc usa
Posts: 88
Rewards Points: 75
Default

id rather not rewire the sockets...
adamv7010 is offline   Reply With Quote
Old 04-17-2011, 03:05 PM   #9
Member
 
Join Date: Mar 2011
Location: nc usa
Posts: 88
Rewards Points: 75
Default

iirc a universal 820 mag replacement is what i need...but i dk if i can find any anymore
adamv7010 is offline   Reply With Quote
Old 04-17-2011, 03:09 PM   #10
Senior Member
 
william1978's Avatar
 
Join Date: Sep 2008
Location: Charlotte, N.C.
Posts: 11,079
Rewards Points: 2,000
Default

Quote:
Originally Posted by adamv7010 View Post
id rather not rewire the sockets...
Beggars can't be picky.
william1978 is offline   Reply With Quote
The Following User Says Thank You to william1978 For This Useful Post:
Speedy Petey (04-17-2011)
Old 04-17-2011, 03:11 PM   #11
NRA Member
 
backstay's Avatar
 
Join Date: Feb 2011
Location: Wonderful Northern Minnesota
Posts: 7,723
Rewards Points: 2,016
Default

You just cut the wires and wire nut the new leads in. That part is easy. If you can't do that...well maybe you shouldn't do the job.
backstay is offline   Reply With Quote
The Following 3 Users Say Thank You to backstay For This Useful Post:
John Valdes (04-18-2011), randas (04-17-2011), Speedy Petey (04-17-2011)
Old 04-17-2011, 03:11 PM   #12
Moderator
 
Speedy Petey's Avatar
 
Join Date: Jan 2007
Location: NY State
Posts: 9,055
Rewards Points: 2,030
Default

Quote:
Originally Posted by adamv7010 View Post
id rather not rewire the sockets...
Sorry but you don't get to make that decision any longer. At least not for much longer.

My supply house hasn't carried mag ballasts for quite a while now. I have been re-wiring fluorescents ever since.
Speedy Petey is offline   Reply With Quote
Old 04-17-2011, 03:13 PM   #13
Member
 
Join Date: Mar 2011
Location: nc usa
Posts: 88
Rewards Points: 75
Default

lol thanks guys.
adamv7010 is offline   Reply With Quote
Old 04-17-2011, 03:14 PM   #14
Sideways Sparky
 
farlsincharge's Avatar
 
Join Date: Dec 2010
Location: SK Canada
Posts: 1,404
Rewards Points: 524
Default

Are anyone else's Landlord/maintenance man senses tingling?
farlsincharge is online now   Reply With Quote
The Following 2 Users Say Thank You to farlsincharge For This Useful Post:
sbrn33 (04-17-2011), Speedy Petey (04-17-2011)
Old 04-17-2011, 03:20 PM   #15
Moderator
 
Speedy Petey's Avatar
 
Join Date: Jan 2007
Location: NY State
Posts: 9,055
Rewards Points: 2,030
Default

Quote:
Originally Posted by farlsincharge View Post
Are anyone else's Landlord/maintenance man senses tingling?
From the very beginning.
Speedy Petey is offline   Reply With Quote
The Following User Says Thank You to Speedy Petey For This Useful Post:
william1978 (04-17-2011)
Old 04-17-2011, 03:33 PM   #16
Senior Member
 
william1978's Avatar
 
Join Date: Sep 2008
Location: Charlotte, N.C.
Posts: 11,079
Rewards Points: 2,000
Default

Quote:
Originally Posted by farlsincharge View Post
Are anyone else's Landlord/maintenance man senses tingling?
Yep!!!
william1978 is offline   Reply With Quote
Old 04-17-2011, 08:07 PM   #17
Registered Member
 
Join Date: Feb 2009
Location: State of Euphoria
Posts: 14,058
Rewards Points: 2,000
Default

Quote:
Originally Posted by farlsincharge View Post
Are anyone else's Landlord/maintenance man senses tingling?


as soon as I read post #8
mcclary's electrical is offline   Reply With Quote
Old 04-17-2011, 08:21 PM   #18
Senior Member
 
Dierte's Avatar
 
Join Date: May 2009
Location: Dayton, OH
Posts: 272
Rewards Points: 250
Default

Quote:
Originally Posted by farlsincharge View Post
Are anyone else's Landlord/maintenance man senses tingling?
Love it! I had a whole day of replacing t12 electronic ballasts because the "guy" who had been replacing them for 20 years got confused and just matched colors w/o rewiring the tombstones
Dierte is offline   Reply With Quote
Old 04-18-2011, 12:33 PM   #19
Senior Member
 
Join Date: May 2007
Location: SC.
Posts: 9,421
Rewards Points: 2,174
Default

Quote:
Originally Posted by adamv7010 View Post
id rather not rewire the sockets...
You don't have to rewire the sockets. The one red wire connects to both tombstones on the red end. Just cut the old power wires and wirenut both tombstones together. All four wires go to the ballast red. Just like the drawing shows on the ballast.

Quote:
Originally Posted by Dierte View Post
Love it! I had a whole day of replacing t12 electronic ballasts because the "guy" who had been replacing them for 20 years got confused and just matched colors w/o rewiring the tombstones
How could he match colors when there are not enough wires to match up.
John Valdes is offline   Reply With Quote
Old 04-18-2011, 03:19 PM   #20
Senior Member
 
Join Date: Jan 2011
Location: Florida
Posts: 359
Rewards Points: 250
Default

Quote:
Originally Posted by John Valdes

You don't have to rewire the sockets. The one red wire connects to both tombstones on the red end. Just cut the old power wires and wirenut both tombstones together.
Don't follow this advice, you will be back in a few months replacing all the ballast. I learned the hard way. You most defiantly need to desire the tombstones, or get rapid start electronic ballasts.

Tried that in my house being lazy, sure enough two months later light stopped working. Re wired tombstones and replaced ballast, two years later all good.

Foestauf is offline   Reply With Quote
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
Replacement Reginald18 Services and Service Equipment 5 10-30-2010 05:29 PM
Code question - Ballast replacement annnelson General Electrical Discussion 11 01-26-2010 07:14 PM
Replacing 8, 2 lamp magnetic ballast lighting with electronic ballast and t8 lamps phish1985 General Electrical Discussion 4 03-02-2009 02:57 PM
Replacement for old ITE 15A breaker WoodyW1952 Vintage Electrical 3 05-23-2007 06:29 AM
DIY 3-way replacement ! MDShunk Code Violation Discussion 4 04-02-2007 09:46 PM


All times are GMT -4. The time now is 12:20 AM.


Copyright 2006-2014 Escalate Media LP. All Rights Reserved
Our Pro Sites Network
ContractorTalk.com | DrywallTalk.com | HVACSite.com | PaintTalk.com | PlumbingZone.com | RoofingTalk.com