Let’s discuss the question: how to wire a 4 lamp ballast for 2 lamps. We summarize all relevant answers in section Q&A of website Bmxracingthailand.com in category: Blog technology. See more related questions in the comments below.
Table of Contents
Can I use a 4 bulb ballast on a 2 bulb fixture?
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 you wire a 4 lamp ballast for 3 lamps?
The two yellow wires on a 4 lamp instant start ballast are connected together inside the ballast. Cut and cap one yellow and one red or blue wire with a wire nut. Connect each of the blue ballast wires to the each of the two blue lampholder wires. Connect the red ballast wire to the third blue lampholder wire.
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Can I 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. As seen below, connecting the 3 lamp instant start ballast to the three lamps can be a bit confusing. This is because the wire colors on the ballast and the lampholders will not match up.
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 …
How many ballasts are in a fixture?
The fixture may appear to have two tubes working off one ballast, but actually there are two ballasts built into one case. Fixtures with four tubes, similarly, have four starters and four ballasts. In some kinds of fixtures, the starters are built in and cannot be individually replaced.
What are the blue wires on a ballast?
The ballast has a hot and neutral wire at one end to receive power, and two blue wires a red one at the other end to supply power to the lights.
How many wires does a ballast have?
Wires on the Replacement Ballast / Transformer
The replacement ballast provides 5 wires: black, white, blue, blue (equivalent) and red. Incoming electrical power at the fixture connects to the line BLACK and WHITE wires shown on the diagram.
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What do I do with the yellow wires on a ballast?
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.
Can you replace a rapid start ballast with an 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.
Can you replace two ballasts one?
Light Fixtures with Two Ballasts
A 4 lamp fixture with two rapid start ballasts can be replaced with one 4 lamp instant start ballast. As seen below, connecting the 4 lamp instant start ballast to the four lamps can be a bit confusing.
What are the blue and red wires on a ballast?
2 and 3 lamp instant start ballasts use blue wires for individual connections, and red wires for common connections. Black wire is for line voltage and white wire for neutral.
How do I know what type of ballast I have?
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.
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What do the numbers on a ballast mean?
The most common types are T12, T8, and T5. The T stands for tubular and the number indicates the diameter in 1/8 of an inch. Lamp diameter is determined by ballast type. A fixture with a T12 ballast must use a T12 bulb. A fixture with a T8 ballast must use a T8 bulb, etc.
What size is ballast wire?
Ballast wires are 18 AWG. Use a blue wire connector for up to four 18 AWG wire connections. Use orange wire connector for more than four 18 AWG wire connections. Light fixtures from the factory are wired with the ballast wires connected directly to the lampholders.
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