Thank you to the people who responded I learned a lot and I'll put what learned to use. If you're ever replacing ballasts in a T12 fixture, there is really no reason not to go to T8. Notice: Replacement parts for the light fixture should be compatible with the type of fluorescent lamps that have been installed. For the 4ft long bulbs you are correct that the power consumption per bulb only differs by 6 watts 40W T12 and 34W T8 but you are overlooking that the T8 is brighter as well. Assuming the fixture is wired correctly the top cable is the feed and the bottom the switch leg. But now I know I can just upgrade the bulbs n ballast, thanks. Notice how both the red and blue wires go to one lamp.
They are probably made today with just one red wire to save money on wire, as with two red wires, they were connected together, anyway. There must be a legend on the wiring diagram to inform you just what each color implies. I initially bundled the extra left-hand red with the four red on the right-hand side, and the same with the extra blue, but this did not work. Wiring a direct replacement T8 ballast can be relatively straightforward, although retrofitting another type of fixture, such as T12, may be more challenging. That is important to maximize tube life. Is this just wishful thinking, or is this a feasible option? Provided the ballast supports the wattages the bulbs draw. There should also be a red and blue set of wires on the ballast.
Thanks in advance for any help on how to wire correctly. Disconnect the wires in the fixture. But then, what to do with the extra red and blue of that same left-hand trio? Learn the meanings of the basic circuit icons and pick the right ones to utilize. I will have light today Thanks to everyone. You have a 6 watt difference between T12 and T8 I know how they said T12 will be hard to find or the price will go up but that's been like2-3 years now and I still haven't seen it sure it will come one day but over 6 watts? Here at Total Bulk Lighting, we are demystifying the lighting world one bulb at a time. What I would do: cut the old line wires - those coming from the ceiling - and set them aside for now. All factors along the cable equal and connected.
They have three versions Low, Normal, and High. Name required Email will not be published required Website By submitting you agree to our. T8 uses less power, and puts out more light. Skill Level: Beginner to Intermediate. Schematics emphasize on exactly how circuits function logically. The black from the feed should nut to the white on the switch leg.
I suspect the wiring is not as simple as described. . Our local utility participates in an energy program so got a lower price on the ballasts. The sockets themselves may need to be replaced. You didn't say anything about a ground wire coming of the ballast yet the diagram indicates there is one. I'll save it to my favorites for future use.
Then replace the bulbs with new. Connect the black and white wires from the house circuit cable to the black and white wires leading from the ballast, using wire connectors. It depends on how the T12 to T8 conversion is done. Changing the wiring as suggested, places the switch directly across the 120V line. Walta said by : If you find a tripped breaker do not reset it before you locate the short circuit and clear the short. Still open to advice, like am I now in danger of a fire in my wall? This electrical wiring question came from: Jerry, a Property Manager from Carlinville, Illinois. Yeah, the old T12s, single pin suck; blah, blah, blah.
Key lines are stood for by L1, L2, and more. Use 8-32 screws to mount the new ballast to the fixture. I just guessed and wrapped the two blue wires together and connected the singe blue wire from the fixture to them. Turn the switch on, and the same set should read 0 ohms 1 or 2 ohms short. I'm trying to avoid serious retiring because my knowledge is limited.
If it's tripping the breaker when you hit the switch, then they wired a switch loop into the fixture trough. Regarding Image detailed description: Pic has been added by Ella Brouillard and has been tagged by tag in field. Keywords for 4 Wire Ballast Diagram :. It sure would help if a simple picture were posted. Often, the ballast housing is a piece of metal held in place with small tabs. Energy savings increase significantly if the number of bulbs is being reduced as part of the conversion I have heard the recommendation of 2 T8 for every 3 T12 being replaced. They are all 60w bulbs.