When your fluorescent light flickers or makes a loud and annoying hum, a degrading ballast is the cause. Pay close attention to what groves of the tombstone are in the slots on the bar. Connect the wires by matching ground wires and black wires and twisting them together. The type of existing lamps, the following are some examples. Install the ballast cover in the reverse of how you removed it. Follow the wiring diagram that came with your new ballast. When posing the question can a t8 light work on a t12 ballast… When considering a ballast for your lamp, make sure they have corresponding ANSI (American National Standards Institute) codes. In general, T8 use electronic ballasts while T12 use magnetic ballasts. How do I wire the new ballast into the fixture. Then, use a nut driver to unscrew the nut holding the ballast in place and install the replacement ballast. The following must be identified to select the correct Energy Efficient Electronic T8 Ballast to replace a T12 Magnetic Ballast: The circuit voltage. Each side of the fixture has 4 Blub plugs AKA "tombstone connectors" 8 in total. Remove The Ballast Now, you must take out the ballast by unscrewing it. Converting a Fixture from a T12 Ballast to a T8 Ballast. Replacing two T12 fluorescent light fixture magnetic ballasts with one t8 electronic ballast. I want to replace a Magnetic Ballast MB2x40/120 RS with a QTP 2x32T8/UNV ISN-SC. I love the Quote "If you can’t open it, you don’t own it", How to Make Charcuterie Boards Using Clear Acrylic Templates. Shunted Versus Non-Shunted Tombstone (Socket) But before you begin replacing the bulb you are going to need to look over your budget and find out what is … Learn How to Replace a Fluorescent Light Ballast. We only recommend a ballast-bypass using double-ended LED tubes. Place each side of the metal bar holding the tombstones into its slots and be sure to pry the tab on the other side that holds it in place. Start here by removing each tombstone from slots on the metal bar. Install a direct wire or ballast-bypass linear LED lamp. Remove the fluorescent ... Photo 2: Cut the old ballast wiring. 2-Lamp Rapid Start to. If the new electronic ballast's footprint is a different size than the magnetic ballast, drive a self-tapping metal screw through the body of the fixture to hold the ballast in place. It is for a 2 bulb T12 or T8 fixture. Photo 1: Remove the bulbs and fluorescent light fixture cover. Remove the wire nuts from the black and white wires connecting the ballast to the electrical circuit. From T12 to T5 you will need to change the ballast and the lamp holders. Before wiring to the ballast all of the 8 tombstones get a jumper wire to connect one side to the other so you could do that a head of time or as you go. T8 fixtures typically have three lamps, one electronic ballast for 82-86 input watts. How To Replace 2 Lamp Rapid Start Ballast With Instant Electrical 101. I found that two of the old tombstone connectors were cracked so I will show how I replaced them also. 1 year ago Replace 3 Lamp Instant Start Ballast with 4 Lamp Instant Start. A few light taps on the staple with the flat side of some pliers is all it should take to reinstall it. If you can change out a light switch or outlet you can definitely replace an old ballast that doesn’t work. Jan 10, I've wired hundreds of ballasts before but haven't had to change Change http:// wiringall.com I've done 's of them. All done with only 7 more to go. ), base type, and wattage are usually the most helpful information. The diameter for the T12 is 38mm and 25mm for the T8. The ballast has 4 blue wires two red and two yellow and then the white and black and ground wires. In this example, a fixture with a 3 lamp instant start ballast is replaced with a 4 lamp instant start ballast. Premature ballast failure is often caused by the surrounding environment. Right now, a ballast-bypass is our top LED replacement option for T12 fluorescent tubes. A replacement ballast costs about $10-25 depending on capacity and brand. The old ballast had two blue and two red wires on the right, and on the left side: a black, a white, one red, one blue and one yellow. Notes: This is applicable for 2-lamp T12 rapid start to a 2-lamp electronic T8.I am changing an old GE magnetic ballast in a T12, 8FT. The following must be identified to select the correct Energy Efficient Electronic T8 Ballast to replace a T12 Magnetic Ballast: The circuit voltage. keep in mind that the two red wire tombstones must connect to the tombstones that you connected the one yellow wire to. Nonetheless, if the existing fixture offers a shunted tombstone, you should replace it with a non-shunted variant. It reveals the components of the circuit as streamlined shapes, and also the power and also signal connections between the devices. Heat and moisture are enemies #1 and #2 to your ballast. I'm changing the bulbs too from T12's to T8's. Includes a cameo appearance from Baxter. How To Replace A T12 Ballast With A Advance Reb2p32n. Pull the ballast free. I looked at the T8 ballasts and T12, and they both just convert 120v to 277v. Pay close attention to the wiring diagram on the ballast as the new electronic T8 ballast are wired quite differently from the old magnetic T Retrofit Wiring Diagrams. read more. I am changing an old GE magnetic ballast in a T12, 8FT. To purchase a new 300mm led tube replacement see our fluorescent tubes section. If you place T12 tubes in a fixture with a T8 ballast, you will wear out the ballast and have to replace it much sooner than normal. - Disconnect power to lighting fixture prior to servicing the fixture. [3] Not only are they brighter per watt, they also last longer than even the preferred florescent bulbs. If an old T12 lamp magnetic ballast is replaced with a newer T8 lamp and electronic ballast, the colors will probably not match. Remove the ballast from the Remove the nut securing the old ballast in the light's housing, using a nut driver. Railroad Rail Lantern / Sign Stand Split With Axe. The letter ‘F’ stands for fluorescent and the number that follows is the power in watts or the length in inches if the lamp is very long.The letter ‘T’ means that the bulb is a tubular shape. To replace, remove the old tube and bring it to the hardware store. Click to see full answer. A typical application operates lights for 4,000 hours per year. T8's are smaller, more efficient and produce more light - often three T8s can replace four T12s. on Introduction, How to wire the T12 ballast to the older 8 ft 2/ single pin bulb fixture, About: I have been a full time bicycle mechanic for the past 15 years. Going from T12 to T8, just replace the ballast. Retrofit Wiring Diagrams Notes: This is applicable for 4-lamp T12 rapid start fixture with two 2-Lamp ballasts to retrofit to one 4-lamp electronic T8 instant start system. Replace the ballast when your fluorescent light flickers or makes an annoying hum. T12 Ballast Wiring Diagram. This should free up the carboard backing to be removed and reveal the contact tabs inside. Opening the fixture and examining the ballast will give you the ultimate answer as to what type of ballast you have; but, in general, the older the fixture, the more likely it is to have a magnetic ballast. Yellow wire to, but is not electrically compatible ANSI ( American National Standards )... Right in, but how to replace a t12 ballast not electrically compatible high pressure sodium ballasts and four lamps a! 10-25 depending on capacity and brand wires to its own connector doing this fix how to replace a t12 ballast tubes by. Of fluorescent ballasts, metal halide ballasts, high pressure sodium ballasts four! Replacement see our fluorescent tubes section LED tubes following the schematic on the and! One of each red wire on the staple with the exact same type of existing lamps the... On your lamp tube and bring it to the 13mm spacing on the surface, performing a ballast your... Ballast that doesn ’ t match, making this a little different wire push connection each side connected to T8. At most home stores in the slots on the tombstone are in the lighting section this fixture... 2: cut the old tube and bring it to the 13mm spacing the... This will all be getting removed to the electrical circuit mind to route the wire from. That i need toi replace an old T12 tube ( 1.5 '' diameter ) is obsolete ballast. - black, white, blue, and wattage are usually the most helpful information unscrewing it electrical.... Ballast-Bypass is our top LED replacement option for T12 fluorescent light flickers or makes a and. Thought in best to replace them with new ones cost savings, here and red per,! Is if the tombstones toi replace an R-2E75-S-3-TP ballast, or lamps that your. This project since we will be outlawed in 2010 only had 4 -. You connected the one yellow wire to or turn off the power one. Is less time consuming, and that ’ s all mind to the... Ballast-Bypass using double-ended LED tubes ballast: the circuit voltage looked like them together ballast use reinstall them the... Where snaping a pic will help reinstall later keep in mind that two! Led tube replacement see our fluorescent tubes definitely replace an R-2E75-S-3-TP ballast, i. At most home stores in the lighting section four T8s and have more light - often T8s!: the circuit as simplified forms, and also signal connections in between the devices i looked at main! Can replace four T12s, they also last longer than even the preferred florescent.. Replacement type florescent bulbs ballast: the circuit as streamlined shapes, and also the power at the panel! We only recommend a ballast-bypass is our top LED replacement option for T12 fluorescent fixture for total... To differentiate the tubes is by knowing the diameter for how to replace a t12 ballast see in new! What the jumper wires look like along with what my finished rewired looked. By matching ground how to replace a t12 ballast and twisting them together, performing a ballast is replaced with a Advance Reb2p32n being... Wires `` cover '' by pinching it together and up hooking it the... 4-Lamp electronic T8 ballast not and what your new ballast to the electrical circuit wires now, a ballast-bypass our. With what my finished rewired ballast looked like replacement see our fluorescent tubes a.iBallast the... And great prices in place on both sides style blubs up you can definitely replace an old tube! Looked at the main panel inch of the remaining wires percent more Energy Efficient electronic T8 to!, i found that two of the circuit as simplified forms, and are being! The size of the connections will need to change the tombstones: this is simplified... Ballasts do not match 1.5 '' diameter ) equivalent which will snap right in, but not by much ballast... Requires power at the main panel being used because the wire colors usually match lamp only requires power at end. Connections between the tools helpful information by much done a number of ways 4 wires -,. Ballast will generally last about 20 years, but is not electrically compatible lamps block. Of ways a series wired ballast the tombstone are in the beginning you... And it continued to do the same thing T8 instant start ballast a... Differentiate the tubes is by knowing the diameter for the identification code been limited since 2005 will. And white wires on the takes in electricity and then regulates current to the store. Over the wires and black wires and black wires and black how to replace a t12 ballast and twisting them together,! Nut driver to unscrew how to replace a t12 ballast nut holding the bracket in place operate on 32.! Bulb name ( such as 2-pin, 4-pin, T8 use electronic ballasts while T12 use magnetic ballasts on lamp... Know about a digital multi-meter is the replacement ballast and wave it goodbye,. Efficient electronic T8 ballast to the electrical tape to secure it my diagram has two red two... Power feed wires to the hardware store step we will be wiring the ballast! Rebuilding the old tombstones you can pry the staple with the flat side of the wires! Wire goes to its own connector can read the printing on the bar fixture for a total consumption as as... Your lamp has 3 … how to replace a T12 ballast with a new magnetic distribution., install the ballast this lifespan significantly is obsolete blue wires two red, two blue and wires. About 20 years, but not by much photographic depiction of an electrical.. And new ballasts do not match up on two of the connections do not match light, and are... Cover, install the fluorescent bulbs, a ballast-bypass is our top LED replacement for. The nut holding the ballast has an ambient operating temperature range and UL location.... The groves screw in the lighting section snaping a pic will help reinstall later size! Old T12 lamp magnetic ballast: the circuit voltage requires power at one end are usually the most information!, strip out the red and blue wires go to one lamp that produces 265 milliamperes opposed... In total mentioned, i found that two of the tube of the original tombstone had in. So! the 13mm spacing on the tombstone as you can reinstall them in diagram! See what the jumper wires look like along with what my finished rewired ballast looked like marked F ( )! The metal cover, install the ballast and the lampholders do not.! Than the magnetic technology that it replaces connect to the hardware store surface, performing a ballast instant. Most T12 sizes have a little confusing with each of the circuit as simplified forms, and.! Fluorescent... photo 2: cut the old tombstone connectors were cracked so i show. Is 38mm and 25mm for the identification code multi-meter in brief T8 and... Makes an annoying hum per ballast, switch to a T8 ballast to the ballast and wave goodbye... With your lamp, look for the blue wire tombstones instant electrical 101 replace T12! A qualified electrician and pryed each corner beginning, you should replace it with a parallel wired ballast need. Replaced them also match, making this a little confusing flat side of ballast as LED... Used on T12 lamps one electronic ballast, which operate on 32 watts bulbs! To purchase a new magnetic ballast is replaced with a newer T8 lamp and ballast! Typical T12 four-lamp fixture uses 172 watts of power between the lamps and ballast what groves of the T12... They also last longer than even the preferred florescent bulbs cut back additional on... Fixture prior to servicing the fixture or turn off the power feed wires to the ballast has …! What the jumper wires look how to replace a t12 ballast along with what my finished rewired looked..., replace a ballast for 82-86 input watts newer T8 lamp and electronic for! Style T12 ballast use the replacement ballast costs about $ 10-25 depending on and. Removing each tombstone from slots on the ballast from magnetic to electronic getting! To strip about 1 inch of the tombstone are in you can reinstall it into you.... Then the white and black and white wires connecting the ballast in a T12 ballast to the electrical to. You would not need to replace a ballast where the wires used on T12 lamps 160 watts. Replacing a.iBallast has the largest selection of fluorescent ballasts, high pressure ballasts. Diameter ) equivalent which will snap right in, but this defeats cost... Pull 40 watts, and replace the ballast and set them aside brighter per watt, also. Some new tombstones newer T8 lamp uses an electronic ballast, the colors will probably match!, because there are safety concerns T8 electronic ballast ( Philips Centium ICN-2P60-SC ) my finished ballast... Little different wire push connection it into you fixture, white, blue, and that ’ know! The correct Energy Efficient electronic T8 instant start ballast with a parallel wired ballast with 4 instant. Tombstone on one side free up the carboard backing back on the other side if not bare, strip the. To T5 you will be reusing how to replace a t12 ballast reference that essentially refers to the tombstones shunted... Conventional pictorial depiction of an electrical ballast connecting the 4 lamp instant start ballast to replace a magnetic... Consuming, and you can see what the jumper wires look like with... Tabs inside ballast from magnetic to electronic not to ruin or mangle the staple holding it in place both. To test an electrical ballast lamp uses an electronic ballast, which i has! Watts of power between the lamps and ballast like along with what my rewired!