Can you use a 4 light ballast for a 2 light fixture?

Your options should be listed on a label on the ballast. Some will work with 2 or 4 tubes, some need 3 or 4 . . . If you don’t have the proper number tubes the ballast will generate more heat and shorten its lifespan and the life of the tubes. This also happens when people take 2 tubes out of a 4 tube fixture.

How do you wire a 4 lamp ballast?

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 4 bulbs?

How many ballast are in a 4 bulb fluorescent light?

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 happens if you wire a ballast wrong?

It will overheat, possibly starting a fire, and then burn out, usually disrupting current flow. Until it does, due to the inductance and resistance, the current will be not quite 90 degrees out of phase with the voltage. Electronic ballasts are 4 or 6 wire devices.

Can you use a 4 bulb ballast for 3 bulbs?

2 Answers. Newer electronic ballasts run fine with lamps removed. Many replacement ballasts can be wired for several combinations of lamps, such that a 4-lamp ballast can be wired to a 3 or 2 lamp fixture. This will be shown right on the label and wiring diagram.

How do you replace a double ballast?

How do you rewire a ballast?

How do you wire a ballast wire?

What is the blue wire 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 you bypass a ballast on a 4 light fixture?

What is the yellow wire 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.

How do you bypass a 4 bulb ballast?

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

Is it safe to bypass a ballast?

Safety risk

The most significant negative to a ballast-bypass linear LED is the risk of electric shock since the sockets carry line voltage. It’s a common practice to place a finger on the lamp pins while you are trying to install it, and this becomes a risky endeavor when using single-ended ballast-bypass lamps .

Can you bypass a ballast?

If the existing fluorescent tube fixture you want to replace has a non-shunted tombstone, you can proceed with the ballast bypass procedure. Nonetheless, if the existing fixture offers a shunted tombstone, you should replace it with a non-shunted variant.

How do you wire a double ended ballast bypass?