I need toi replace an R-2E75-S-3-TP ballast, which I think has been discontinued. The typical T12 four-lamp fixture uses 172 watts of power between the lamps and ballast.LED equivalents typically use only 50 watts, 71% less energy per fixture. How do I wire the new ballast into the fixture. You need to use a T8 ballast. Ballast Wire Colors. 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. T12 to LED replacement options A. Once all parts are in you can connected the power feed wires to the new ballast. T12 vs T8. Replace 3 Lamp Instant Start Ballast with 4 Lamp Instant Start. 2-Lamp Rapid Start to. To remove any old wire ends still in the tombstone simply poke a ale or small phillps screwdriver in next to the wire and the wire should drop out the front. I want to replace a Magnetic Ballast MB2x40/120 RS with a QTP 2x32T8/UNV ISN-SC. To purchase a new 300mm led tube replacement see our fluorescent tubes section. This is probably the cheapest, least labor-intensive option, but not by much. When your fluorescent light flickers or makes a loud and annoying hum, a degrading ballast is the cause. 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 most important to you or your client. The diameter for the T12 is 38mm and 25mm for the T8. Matching ANSI codes guarantees that the ballast you chose can be used with your lamp. 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. Notice how both the red and blue wires go to one lamp. It is for a 2 bulb T12 or T8 fixture. You can get them at most home stores in the lighting section. The repair will only take about 10 minutes. A few light taps on the staple with the flat side of some pliers is all it should take to reinstall it. 1. The old ballast only had 4 wires - black, white, blue, and red. Assortment of t12 ballast wiring diagram. First start by of course turning off the power and disconnecting the black and white wires from your in coming power feed to the old fixture you could reinstall wire nuts on black and white power feed wires as to be able to turn power back on to the rest of the lights on that circuit or leave it off if your the forget full type and might not remember its on when you go to Install the new ballast. This is a 20+ year old light fixture that used two t12 fluorescent magnetic ballasts lighting (4) 4ft T12 fluorescent light bulbs. Step 2 – Buy Ballast. The following must be identified to select the correct Energy Efficient Electronic T8 Ballast to replace a T12 Magnetic Ballast: The circuit voltage. I have a wired in series 8 ft fluorescent F96t12 -2 lamp fixtures that I need to replace the ballast from magnetic to electronic. T12 tubes pull 40 watts, and are frequently being replaced with lower wattage t8 tubes, which operate on 32 watts. the pins are spaced identically so when changing from T12 to T8, you would not need to change the tombstones. The T5 uses a 5mm pin spacing as compared to the 13mm spacing on the T8 and T12 lamps. Try not to ruin or mangle the staple you will be reusing it. 2-Lamp Electronic Instant Start. Cut out the Red, Blue and yellow wires near each ballast. We only recommend a ballast-bypass using double-ended LED tubes. New ballast has a second blue wire. To replace, remove the old tube and bring it to the hardware store. T5. We take pride in great customer service and great prices. The ballast takes in electricity and then regulates current to the bulbs. 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