Wiring A Ballast From T12 To T8 - Electrical - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 05-16-2011, 07:59 PM   #1
Join Date: May 2011
Posts: 1
Rewards Points: 10

wiring a ballast from t12 to t8

i bought a ge ballast( gem220ts120). the t12 ballast had two reds,blues,yellows.I bought a t8 ballast with the same colors. I wired one blue from ballast to one blue from light tombstone,the same with the other blue.I did the same thing with the two reds,yellows color to color. I have two f15 lamps it is a two lamp fixture. when i turn on the light switch the lamps are dim. If i turn the lamps when they are in the light fixture they come on. And sometimes if i turn the light swich off,on quickly the light will come on.Could it be a bad ballast or wrong wiring.


family is offline   Reply With Quote
Old 05-16-2011, 08:33 PM   #2
Licensed electrician
Join Date: Sep 2007
Location: Maryland
Posts: 10,813
Rewards Points: 1,780

There should be a wiring diagram on the ballast you should follow.


Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
Jim Port is offline   Reply With Quote
Old 05-16-2011, 11:40 PM   #3
" Euro " electrician
frenchelectrican's Avatar
Join Date: Apr 2006
Location: WI & France { in France for now }
Posts: 5,369
Rewards Points: 2,000

For the electronique ballast you will have to follow the wiring diagram on the ballast very carefull and also do you have rapid start or instat start ballast if you have rapid start ballast you should have not much issue change over but instat start ballast the wiring will look diffrent also most case you will have to change the tombstone connection by either shunt them or wire both wires at each tombstone the reason why I mention that due if you only hook up one side of the flourscent pin it can cause premature burn out bulb.

I have see it happend before with instat start when someone forgot to change the tombstone connection. the ballast diagram is the quickest way to indentify it.

The answer will be based on NEC ( National Electrical code ) or CEC ( Cananda Electrical code ) or ECF ( Electrique Code France )
frenchelectrican is offline   Reply With Quote
Old 05-17-2011, 08:57 AM   #4
joed's Avatar
Join Date: Mar 2005
Location: Welland, Ontario
Posts: 13,278
Rewards Points: 13,352
Blog Entries: 11

The wrie colours will NOT match the old ones. You MUST follow the drawing on the ballast.
joed is online now   Reply With Quote

Thread Tools
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
Ballast wiring, to and neutral wires. Wek Electrical 2 03-03-2011 07:03 PM
Wiring nut type for lamp wire and ballast wire. Wek Electrical 3 03-01-2011 01:59 PM
T8 Ballast Wiring - Help Needed! Mach Electrical 3 07-20-2010 09:33 PM
Help!!!!!! Hps Ballast Wiring whitekid135 Electrical 1 03-30-2008 11:05 AM
Wiring plug to Mercury High Intensity ballast Dustin Electrical 2 05-29-2007 04:56 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1