How do you wire a 4 lamp ballast for a 3 lamp?
Can you wire a ballast wrong? Replacement ballast should always match in voltage, wattage and brand. Wrong ballast types can cause fires or shorts.
Can I use 4 bulb ballast for 2 lamps? A 4 lamp fixture with two series ballasts can be replaced with a 4 lamp parallel ballast. On the 4 lamp parallel ballast diagram below, each individual wire is connected to a pair of individual wires on the lampholders.
Can you use a 3 lamp ballast for 2 lamps? A 3 lamp fixture with two rapid start ballasts can be replaced with a 3 lamp instant start ballast. On the 3 lamp ballast, an individual wire is connected to the lampholder of lamp 2 on the left side, and the common wire on the right side.
How do you wire a 4 lamp ballast for a 3 lamp? – Related Questions
What happens if I use the wrong ballast?
When it’s too hot or too cold, the ballast can burn or fail to start your lamps at all. Heat combined with prolonged condensation inside an electronic ballast can cause corrosion. Some people may suggest removing the parts of the ballast casing and cleaning the electrical board.
What are the yellow wires on a ballast?
The other individual red wires connect from the ballast to push-in connectors on each side of the left holder of lamp 2. The common yellow wires connect from the ballast to push-in connectors on one of the right holders of lamp 1 or 2. Two yellow wires connect the common lampholders together.
Do you need an electrician to change a ballast?
Yes. As a matter of fact, you do need a lock out tag out device in place for changing a ballast. ‘An electrician is replacing the ballast on a fluorescent light. The electrician uses the light switch on the wall to de-energize the florescent light.
How do you wire two ballasts together?
Connect the wires from the ballast to the wires on the light fixture in the following manner: one blue wire from the ballast to one blue wire from the light fixture; the other blue wire from the ballast to the remaining blue wire from the light fixture; black ballast wire to building’s black (hot) wire; white ballast
What is a parallel ballast?
When an instant start ballast (wired in parallel) operates multiple lamps in a circuit, the lamps operate independently of each other. If one lamp fails, the others can keep operating as the circuit between them and the ballast remains unbroken.
What is the purpose of a ballast in a light fixture?
In a fluorescent lighting system, the ballast regulates the current to the lamps and provides sufficient voltage to start the lamps. Without a ballast to limit its current, a fluorescent lamp connected directly to a high voltage power source would rapidly and uncontrollably increase its current draw.
Can you replace rapid start ballast with instant start?
The majority of commercial ballasts in the market that operate T8 lamps are instant start. Because of this, when retrofitting a rapid start system to an instant start system, some alterations to the socket wiring are required in order for it to work optimally.
How do you know if a ballast is compatible?
You can determine whether you have a compatible fixture in seconds. Simply turn the light on, then take a photo of the fixture using your smartphone or digital camera. If there are no dark bands on the resulting image, you have an electronic ballast that will work with direct drop-in LED tubes.
How do I choose a ballast?
It needs to fit the electrical requirements of the lamp that it will run. When purchasing a ballast, you’ll need to read the type of lamps it’s designed for, how many lamps it operates, and the voltage the lamps will run on. Choosing the right ballast for a lamp will optimize the light output and life of the bulb.
Which color wires go together?
US, AC:The US National Electrical Code only mandates white (or grey) for the neutral power conductor and bare copper, green, or green with yellow stripe for the protective ground. In principle any other colors except these may be used for the power conductors.
Does ballast need to be grounded?
No, a ground is not needed. Heck, in some cases a fixture is not even needed. Back when LORAN was still used for navigation all you had to do was hold a fluorescent bulb in the air near the tower and it would light. As for the ground and it’s usefulness the neutral and ground wires tied together in the breaker box.
How much should it cost to replace a ballast?
The average cost of ballast replacement is $150 for materials and labor. Materials cost an average of $27.50, and labor costs at least $100 to install a ballast replacement. Homeowners often spend $35 per ballast for programmed-start ballast installation and labor.
How difficult is it to change a ballast?
The ballast takes in electricity and then regulates current to the bulbs. A typical ballast will generally last about 20 years, but cold environments and bad bulbs can decrease this lifespan significantly. You can get a new ballast at a hardware store or home center and install it in about 10 minutes.
Do I need to remove ballast for LED lights?
Since LED lights work on low DC voltage, they need a driver. Most T8 LED tubes do not need a ballast. So, if you are going to install a T8 LED tube light, it will require a ballast bypass unless you choose a ballast compatible T8 LED tube.
Can you change a ballast with the power on?
Make sure the power rating on your ballast is correct. Although changing a ballast is safer with the power off, sometimes it is impractical, such as in a crowded store or office space, and you must replace the ballast without cutting the power. This can be done safely with some preparation and the right tools.
Can one ballast power two bulbs?
The two bulbs will always have slightly different impedances, so more current will flow through one or the other. It’s difficult to balance this out. The condition where one bulb is fired and the other is not is obviously the worst case for this. The fired bulbs have much lower resistance than the unfired bulbs.
Is ballast and choke same?
The choke supports the rest of the supply voltage. The ‘choke’ or magnetic ‘ballast’ is a coil with a magnetic core (using silicon steel) that performs three functions. The fluorescent lamp has two electrodes at its two ends but the voltage needed for breakdown is very high, much higher than the supply voltage.
What is inside a ballast?
A magnetic ballast (also called a choke) contains a coil of copper wire. The magnetic field produced by the wire traps most of the current so only the right amount gets through to the fluorescent light. That amount can fluctuate depending on the thickness and length of the copper wire.
How long does a ballast last?
According to the Certified Ballast Manufacturers Association, the average magnetic ballast lasts about 75,000 hours, or 12 to 15 years with normal use. The optimum economic life of a fluorescent lighting system with magnetic ballasts is usually about 15 years.
Can I use LED tube lights in a fluorescent fixture?
Yes, you can replace fluorescent tubes with LED tubes or LED integrated fixtures. As long as the bulb is compatible with the existing fluorescent ballast in the fixture, you simply remove the fluorescent and replace it with the LED tube light.
Will LED bulbs work with ballast?
No LED bulbs require a ballast, although some are engineered to work with an existing ballast. You will find ballast-compatible or “plug-and-play” LEDs that are designed to replace linear fluorescents, compact fluorescents, or HIDs.