You are watching: Can i use a t8 bulb in a t12 fixture
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T8 lamps ~ above a T12 ballast, or T12 lamps ~ above a T8 ballast will both fail prematurely. The only difference in the fixture itself is generally the ballast and the sockets. T12 will typically have unshunted sockets, and most T8 will have shunted sockets. Putting the not correct ballast in will certainly either underdrive or overdrive the lamps causing the failures. Hope the answers your question.
Using T12 lamps on a T8 ballast would certainly be as with an LED retrofit. You will certainly reduce power use, due to the fact that the wattage walk down, but you shed output together well, again, just like most LED retrofit. The T12 4" lamp will certainly look about like a 3 foot 25W desk lamp or a 4 foot 25W power saver lamp.
Most T12 ballasts are magnetic quick start. They"re solitary application products. Most T8 ballasts from the last 5 year or so deserve to take anything indigenous 120 to 277v input and rated because that 2-4" lamps and also T12 lamps will appear like a 3" desk lamp to the ballast. It"s difficult to fry one as well as lifting a neutral top top 277v and also zapping the 480v. There"s no damage in waiting out till the lamps burn out or area wide replacement if a couple of T12s get installed accidentally. No injury to the ballast/fixture, however don"t gripe if the T12 lamps burn out in 6 months. You"ll have issues with starting, flickering or bad output regardless of ballast/lamp combo if girlfriend use decreased wattage lamps if the cold enough to it is in uncomfortable because that people, only use full wattage lamps. They"re no rated for use under 60*F.
Point take away EL.....I"ve frequently wondered, but haven"t askedhow go a universal ballast work? :001_huh:~CS~
Point bring away EL.....I"ve frequently wondered, but haven"t askedhow walk a universal ballast work? :001_huh:~CS~
It"s a (nearly) consistent current power supply and also various T8 lamps space rated because that the very same amps. The ballast have the right to accommodate a wide selection of voltage if still moving the exact same current. The intake side functions like worldwide worldwide voltage range phone chargers.
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T8 lamps ~ above a T12 ballast, or T12 lamps ~ above a T8 ballast will certainly both fail prematurely. The only distinction in the fixture chin is generally the ballast and the sockets. T12 will frequently have unshunted sockets, and most T8 will have shunted sockets. Putting the wrong ballast in will either underdrive or overdrive the lamps causing the failures. Hope that answers her question.
Speaking about shunted sockets and whatnot, I always loved the function of T12 solitary pin sockets where removing the desk lamp disconnects power to the socket. Ns wish it was like that again instead of making use of those silly ballast disconnects or just cowboying it as soon as replacing a ballast.
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Nothing if you have actually the correct ballast.A T12 ballast on a T8 bulb will over journey the T8 leading to it to fail early on on.A T8 ballast on a T12 won"t offer you adequate light (if it lamp at all) because its gift under driven.A T8 slides right into a conventional T12 socket choose butter. I just did a pair myself.On the yellow wires occasionally you need to tie castle all in addition to the solitary red ~ above the T8 ballast uneven it has the yellow wires top top it.That is the only issue I encountered.