# What do I connect the blue wire to?

## What do I connect the blue wire to?

The blue wire from the ceiling fan gets connected to the second live wire from the ceiling. This second wire can vary in color but is most commonly red or black. This connection allows you to power your lights from the second switch.

## Is the black wire positive or negative?

The coloring is as follows: Positive – The wire for the positive current is red. Negative – The wire for the negative current is black. Ground – The ground wire (if present) will be white or grey.

## What is the difference between yellow and white electrical wire?

The National Electrical Code (NEC) says that white or gray must be used for neutral conductors and that bare copper or green wires must be used as ground wires. Yellow 12-gauge cable is typically used for 20-amp circuits that power general household outlets used for a variety of plug-in appliances.

## How can you tell if a wire is live?

One of the easiest ways to know if a wire is live is to use a voltage checker or a current checker. These are simple devices that you can touch to any wire, and it will tell you if there is electricity running through it.

## What happens if you connect a positive wire to a negative wire?

Reversing the polarity in a circuit can ruin the power source or even cause an explosion. Connecting the wrong wires, like using a positive wire when it should be a negative wire, can also fry the wires themselves. Hooking up the wrong polarity to the wrong leads could damage the multimeter.

## How can you tell if a wire is positive or negative?

The solid/dashed lines on wires like the ones pictured in your question are used to indicate polarity e.g. for the “wall wart” power supplies. Usually* the wire with the white stripe or the dashed lines carries the “positive” (+) end, while the other, unmarked wire carries the “negative” (-) end.

## What is the black wire in electrical?

Electrical Wires The black wire is the “hot” wire, which carries the electricity from the breaker panel into the switch or light source. The white wire is the “neutral” wire, which takes any unused electricity and current and sends them back to the breaker panel.

## What kind of electrical wire do I need?

The most common sizes you’ll find in residential work are 14-gauge and 12-gauge. Larger appliances such as electric stoves, electric water heaters, electric dryers and central air units will often use 10-, 8- or even 6-gauge wire. If you’re adding an outlet, you need to use wire the same gauge as the existing wiring.

## What Colour wire goes to L and N?

The N is for the neutral side or the white wire, and the L is for the load side, the black wire.

## Is yellow wire positive or negative?

Yellow is positive, blue is negative.

right

## How do you know if a wire has power?

To test for power with a non-contact voltage tester, touch the sensor tip of the tester to each of the circuit wires. If the tester lights up when touching any of the wires, the circuit still has power.

## What happens if you connect white wire to black wire?

The light will work either way. The problem is, when you have the neutral and switched leg reversed, you now have the screwshell of the fixture, energized. If, when you change the lamp and touch the shell, while touching something grounded, guess where the current goes!

## What Colour wires are 3 phase?

International Wiring Colour Codes The USA have their own wiring colours for electrical circuits, black, red, and blue are used for 208 VAC three-phase; brown, orange and yellow are used for 480 VAC.

## How can you tell which wire is hot and which is neutral?

The hot one will give a visual and audible alert. Most likely the neutral wire is white and the hot wire is red or black, but test to make sure. Identify the neutral wire in the fixture by looking at the wires. In most modern fixtures the neutral wire will be white and the hot wire is red or black.

## What is a live wire electricity?

(Electrical engineering: Circuits, Electrical power) A live wire is a wire carrying an electric current. If something goes wrong inside and the live wire gets accidentally connected to some metal part, the circuit breaker will blow, protecting the user from an unpleasant sensation or even electrocution.

## Is blue wire positive or negative?

IEC DC power circuit wiring color codes

Function label Color
Negative (of a negative earthed) circuit M blue
Positive (of a positive earthed) circuit M blue
Negative (of a positive earthed) circuit L- grey
3-wire earthed DC Power System

## What are the types of electrical wires?

Types of Electrical Wire in a Home

• 14-gauge, 15-amp circuits.
• 12-gauge, 20-amp circuits.
• 10-gauge, 30-amp circuits.
• 8-gauge, 40-amp circuits.
• 6-gauge, 55-amp circuits.

Black

Brown

red

## What is the purpose of a neutral wire?

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 electrical wire for?

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.

## Which side of plug is black wire?

Black (Hot) goes on the smaller prong side or white to silver screws, black to gold screws. Ground (bare wire) to green.

## What is electrical blue wire?

The blue wire is known as the neutral wire and its job is to take electricity away from an appliance. The brown cable – known as the live wire – actually delivers electricity to your appliance. Together, these two wires form a complete electric circuit.

## What color wires go together for a ceiling light?

Connect the white wires (neutral wires) from your fan and ceiling together. Connect the green wire to your household ground wire (copper/bare wire). Connect the black wires together. Lastly, connect the blue wires together, or the blue wire to the black wire for lights.