Can you use a 4 lamp ballast on a 2 lamp fixture

Apparently you have an electronic ballast. These ballasts have their capabilities listed on their label. check the circuit of the label, and also the type of lamps listed Therein . If your 2 lamps are listed, you can use it.

Can I use a 4 bulb ballast for 2 bulbs?

Can a 3 bulb ballast work with 2 bulbs?

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.

Can you use a 4 bulb ballast on a 3 bulb fixture?

Replace 3 Lamp Instant Start Ballast with 4 Lamp Instant Start. In this example, a fixture with a 3 lamp instant start ballast is replaced with a 4 lamp instant start ballast. The colors of the old and new ballasts do not match, making this a little confusing.

Does it matter what ballast I use?

However, ballasts are often compatible with more than one lamp, and vice versa. Based on design and start method, certain ballast options may be preferable to others because they can help your lights operate more efficiently, have longer life spans, or use less energy.

Can I replace rapid start with instant start ballast?

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.

What are the signs of a bad ballast?

Buzzing. If you hear a strange sound coming from your bulbs or light fixture, like a buzzing or humming noise, that’s often a sign your ballast is going. …
Dimming or flickering. …
No lights at all. …
Changing colors. …
Swollen casing. …
Burn marks. …
Water damage. …
Leaking oil.

How many ballasts are in a fixture?

Many fluorescent fixtures have more than one tube in order to provide more light. These lamps must have individual starters and ballasts for each tube. The fixture may appear to have two tubes working off one ballast, but actually there are two ballasts built into one case.

What happens if you use wrong ballast?

If you use a wrong sized ballast the LRC will not be tuned so you are likely to not start the lamp at all. There is the possibility of burning out components pre-maturely also due to overcurrent and overvoltage conditions particularly if using a larger ballast on a smaller fixture.

Which ballast is used in sodium lamp?

Ballast TypeSodium Vapor BallastVoltage240 VBrandNikkonModelHPS 1000WStart MethodInstant Start

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How do you bypass a ballast on a 4 light fixture?

Step 1: Disconnect All Power So There is No Electrical Current. …
Step 2: Find the Ballast. …
Step 3: Locate and Cut Only the Hot and Neutral Wires. …
Step 4: Cut the Socket Lead Wires. …
Step 5: Remove the Ballast (if you wish) …
Step 6: Connect the Wires. …
Step 7: Reattach Any Coverings and Turn On.

Can you use a 2 lamp ballast for 1 lamp?

A 1 lamp rapid start (series) ballast can be hard to find, but it can be replaced with a 2 lamp instant start (parallel) ballast.

Will a bad ballast burn out bulbs?

The ballast itself can go bad, which causes lights to flicker or even appear to be burnt out, when in fact they aren’t. They require maintenance and energy to power, on top of the power used to light the fluorescent bulb. They are a large part of the equation when using fluorescent lamps.

How do you know if it's the bulb or ballast?

One probe of the multimeter should touch the hot wire connections, while the other touches the neutral wire connections. If the ballast is good, an analog multimeter has a needle that will sweep to the right across the measuring scale. If the ballast is bad, then the needle won’t move.

How do I know if my ballast is T8 or T12?

If no markings are available, the size in diameter of the tube is the easiest way to determine the type you have installed. T8 tubes are 1-inch in diameter and T12 tubes are 1 1/2 -inch.

What is a trigger start ballast?

Rapid or trigger start electromagnetic ballasts are used in T12 and older T8 fixtures and wired in series. Rapid start electronic ballasts heat the electrodes while applying the starting voltage (about 500 volts) to start the lamps quickly in about 0.5 to 1.0 seconds. … Programmed start ballasts are wired in series.

What to do with the yellow wires on a ballast?

The two yellow wires complete the circuit through the fluorescent tube back into the ballast. The red and blue wires energize the pins the fluorescent tube is attached to, the yellow wires connect to the pins on the opposite ends of the fluorescent light tubes completing the circuit.

What is a programmed start ballast?

The programmed start ballast reduces the amount of voltage across the lamp before supplying voltage to pre-heat the cathodes. The ballast is programmed to continue supplying voltage till the cathodes reach a temperature of at least 700-degree Celsius.

Can I replace a magnetic ballast with an electronic ballast?

Newer electronic ballasts are far more energy-efficient, don’t require a starter and are not as affected by cold temperatures as the magnetic predecessors. If you have an older fixture, you can switch from a magnetic ballast to an electronic ballast in a few minutes with some basic hand tools.

What is the difference between magnetic and electronic ballast?

A magnetic ballast uses coiled wire and creates magnetic fields to transform voltage. … An electronic ballast uses solid state components to transform voltage. It also changes the frequency of the power from 60 HZ to 20,000 HZ or higher depending on the ballast.

Why are my fluorescent lights flickering?

If your fluorescent bulbs flicker, most likely the problem is with the bulb itself. If the bulb is very dark on either end, it may be defective and burned out. The best way to test the functionality of a bulb is to put it into a fixture you know works. … Flickering fluorescent lights can also be a result of temperature.

How long do ballasts 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.

How many types of ballasts are there?

And there are two types of ballasts in each family: magnetic and electronic. Magnetic ballasts are the older ballast technology. For the fluorescent family, both T12 linear fluorescents and two-pin CFLs use magnetic ballasts.

How many watts do ballasts use?

Electronic Ballasts Standard ballasts consist of a core and coil assembly. On a typical fixture with two 4 foot 40 watt T-12 fluorescent lamps, the ballast consumes about 13 to 16 watts of electricity. Thus the total consumption of the two lamps plus the ballast is about 93 to 96 watts.

Will a T8 work in a T12 ballast?

T8 LED lamps which are not direct-wire compatible (with ballast) will require a T8 ballast to operate, so unless the T12 ballast in the T12 fixture is replaced with a T8 ballast, a non-direct-wire compatible T8 LED lamp will not work in a T12 fixture. …

What do ballast numbers mean?

About Advance Ballasts and Fluorescent Lamps. Advance Ballasts that utilize fluorescent lamps usually come in two shapes, straight and u-shaped. Most fluorescent types are T5, T8, and T12. The T stands for tubular and the number provides the diameter in 1/8 of an inch. … Therefore, a T12 ballast must use a T12 bulb.

Will LED bulbs work if ballast is bad?

Can LED lamps work off of existing ballasts? Yes, if they have an internal driver than can work off that ballast. Philips, for example, has designed a tube that is compatible with an existing electronic ballast.

How do you hook up a ballast to a lamp?

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 …

Do high pressure sodium lights need ballast?

HPS lamps require ballasts to regulate the arc current flow and deliver the proper voltage to the arc. … Instead, an electronic starting circuit within the ballast generates a high-voltage pulse to the operating electrodes.

Do sodium lights have a ballast?

Light. A sodium vapor lamp is a lamp that uses sodium to create light. … Voltage runs to the light through a ballast, which regulates the current.

Are high pressure sodium lights being phased out?

Phasing out A number of popular lighting types will have to be phased out by 2017 including selected ‘standard’ high-pressure sodium (including retrofit), high-pressure mercury, and standard performance metal halide.