Notice how both the red and blue wires go to one lamp.
One lamp ballast wiring.
Confirm that the new ballast matches the old one photo below and then install it as shown in photo 4.
A wiring diagram is a simplified standard photographic depiction of an electrical circuit.
Ps make sure when you do this the power is off.
Fluorescent ballast wiring schematic collections of fluorescent emergency ballast wiring diagram collection.
This happens all the time and is no big emergency.
Photos 2 and 3 show how to remove the old ballast from the fluorescent light fixture.
Pin 2 of lamp 1 and pin 2 of lamp 2 go to the other yellow wire.
The ballast blue wires connect to one end of the lamp the red wires connect to the other side.
When a parallel ballast instant start operates multiple lamps in a circuit the lamps operate independently of each other.
If you are still confused there is a wiring diagram on the ballast which can help you.
When a series ballast rapid start operates multiple lamps and one lamp fails the circuit is opened and the other lamps will not light.
Series vs parallel ballasts and wiring.
1 lamp rapid start ballast.
Here is how a 2 lamp ballast is wired to a 1 lamp fixture.
So the present flows via one part to obtain to the next one.
You simply connect up the lamp sockets tombstone with the red and a blue and wire nut off the other blue.
The common yellow wires are capped with small wire connectors.
If you had a double lamp fixture with it s double lamp ballast and two lamps hooked up and running and then one of the bulbs burned out early the other one would still work fine.
Wiring this can be done a number of ways.
Tie all three under a single wire nut.
It reveals the components of the circuit as streamlined shapes and also the power and also signal connections between the devices.
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.
2 lamp ballast wiring diagram unique wiring diagram collection.
In a series circuit voltages.
Variety of 2 lamp t12 ballast wiring diagram.
If one lamp fails the others can keep operating as the circuit between them and the ballast remains unbroken.
The yellow wires are for lack of a better description are shared so pin 1 of lamp 1 and pin 1 of lamp 2 go one yellow wire.
After mounting the new ballast replace the ballast compartment cover and bulbs and it should be good for another 20 years.
Both ballasts should be tied to the ground wire that is in the supply cable.
Is this how you have it wired.