How should I connect these two yellow wires?

What do I connect yellow wire to?

Yellow wires are used as switch legs to ceiling fans, structural lights, and outlets paired with light switches, while blue wires are usually used as travelers for three-or-four-way switches.

Can I connect yellow wire to black?

The black hots need to stay together. You need to identify which black on the new switch is “always hot” or “line in” and connect that to these two wires with a wire nut. The yellow wire is the switched hot on the new switch – that should be the other black. Might be called “switched” or “load”.

What do you 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.

Is yellow wire live or neutral?

Plug wiring colours

Is yellow wire hot or neutral?

Blue and yellow wires are hot wires for ceiling fans and three- or four-way switches. White or gray electrical wires are neutral wires.

What voltage is yellow wire?

480 VAC

Wiring Colors | Electrical Wire Color Coding Standards



The USA has their own wiring colors for electrical circuits, black, red, and blue are used for 208 VAC three-phase; brown, orange and yellow are used for 480 VAC.

Does neutral wire have power?

Neutral wire carries the circuit back to the original power source. More specifically, neutral wire brings the circuit to a ground or busbar usually connected at the electrical panel. This gives currents circulation through your electrical system, which allows electricity to be fully utilized.

What is yellow wire on LED light?

The yellow and white on the right is hot and neutral from the source and the black and white on the left are hot and neutral out to your light fixture.

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 wires does a ballast have?

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 do you match a lightbulb with a ballast?

Youtube quote:The only things that matter when you're replacing a ballast are we're number one the number of bulbs number two the type of bulbs number three the voltage.

What happens if you use wrong ballast?

If the ballast is bad, then the needle won’t move. If you’re using a digital multimeter, often the digital readout will possibly list a “1” when it doesn’t find a measurable resistance.

How do I 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. iPhone photo showing fluorescent fixture with electronic ballast. Fixture is compatible with drop-in LED tubes.

Why won’t my fluorescent light come on all the way?

The fluorescent tube won’t turn on



No electrical power due to a tripped breaker or blown fuse. A dead or dying ballast. A dead starter. A dead bulb.

Is it the ballast or the bulb?

The ballast provides enough voltage to start the fluorescent bulbs, and once they are started, it quickly lowers the current to produce just enough electricity to produce a steady light source. Without the ballast, a fluorescent bulb would attach directly to 120-volt current and quickly burn out the bulb.

Do all fluorescent lights need a ballast?

All fluorescent bulbs require a ballast. All compact fluorescent (CFL) bulbs require a ballast, which is often integrated. All HID bulbs require a ballast, which is sometimes integrated. No LED bulbs require a ballast, although some are engineered to work with an existing ballast.

Do fluorescent lights need to warm up?

All compact fluorescent lamps require a slight warm-up time for the electrical current to fully heat the cathodes and reach their full lumen output. When a bare spiral CFL is first switched on, it lights up with approximately 80% of its rated lumens, but it will heat up to its full brightness in about one minute.

Why do fluorescent lights flicker when cold?

Flickering fluorescent lights can also be a result of temperature. If the air around the bulb is cold and circulating, the bulb won’t be able to generate enough heat to work properly. The internal temperature of a fluorescent bulb should be about 50 degrees Fahrenheit for it to work properly and optimally.

Do fluorescent lights work in cold weather?

It won’t perform well in low temperatures — generally, the colder it is, the worse it is. The bulb might come on, but might not come up to full light, or it will take a long time to get there. You’ll need to buy a specialty CFL, one fitted with a cold-weather ballast.