You should always assume everything is positive but the standard color for negative wires are White, tan, green or bare.
In DC systems red is typically positive and black is almost always ground.
depending on the voltage your hot wire is black, red, blue and white is the neutral on 120/250v. at 277/480 volts it is brown,orange, yellow and neutral is gray.if not sure what you are doing let someone who is qualified do the work.
For more information see the answers to the Related Questions shown below.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
Well, it could be either. It depends on what it's connecting to. If the wire isn't connected to anything, it is not inherently negative or positive. It's just wire.
If it is already connected to something, check where it's connected. You can often find a symbol for positive (+) or negative (-).
Most commonly, red is used for positive, and black for negative. All other colors are typically used to speed up repairs by color coding things. They depend on the application or location. For instance, in my guitar amp, a yellow wire goes from the red power LED. All the yellow wires go to LEDs in this instance. If you look at a ballast for fluorescent lights, a yellow wire may connect the starter coil to the connections for the lights.
Always check that a wire is dead before working with it. Red and Black colors designate different "hot" wires while White designates the neutral line. Switch wires often use both wires in a cable, one for each side of the switch. Three way switches, where tow or more switches work for on set of lights, use red and black switch wires (usually). Three phase systems have a different color for each phase along with a neutral. Green or bare wires should always be grounded and not carry any power unless something shorted out. In automotive systems the red wire and battery terminal usually connect to the positive battery terminal, and black to the Negative terminal grounded to the frame. People can have reasons for using different colors than typical or they can just do things wrong, so check first.
the white is the neutral but in older homes the bare can be the neutral.be careful because the neurtal carries more load (sometimes)than the hot.the black or colored is the hot.
in an extension cord we have 1 phase & 1 neutral there is no +tive or -tive
does anyone know I bought a ignition new ignition switch 2 wires 1 yellow 1 black how can I check for positive wire. thnx
The electrical terminology for a neutral is the conductor on the down stream side of the load that completes the circuit back to the distribution supply voltage.
What side is positive and what side is negative
Red wire=positive Black wire=negative
When working with DC (direct current) voltage, IN GENERAL, red is positive and black is negative. But the reality is, a manufacturer may select different colored wires to represent different things, and it is entirely up to the manufacturer to make those decisions.But since this question is under the heading, "Home electricity", you may have asked the wrong question, since home wiring is AC (alternating current), and there is no such thing as a positive or negative wire.
The wire leading to the bulb socket is the positive (+) wire. The vehicle body and frame acts as the negative (-) part of the circuit.The wire colour codefor positive is the green black one
Red is positive while Black is negative.
The side of the plug with the ground wire is or should be the negative and the side with just the center screws is the positive.
The left rear speaker wire positive is -Yellow/Blue negative is - Black/Blue The right rear speaker wire positive is - Yellow/Red negative is - Gray/Red
In a DC circuit Red is positive and Black is negative. In AC systems White is neutral and Ground is green or green-yellow stripe.
1999 Mitsubishi Mirage Car Stereo Wire DiagramCar Radio Battery Constant 12v+ Wire: Red/BlackCar Radio Accessory Switched 12v+ Wire: BlueCar Radio Ground Wire: ChassisCar Radio Illumination Wire: Green/WhiteCar Stereo Dimmer Wire: Black/YellowLeft Front Speaker Positive Wire (+): Red/WhiteLeft Front Speaker Negative Wire (-): Red/BlueRight Front Speaker Positive Wire (+): RedRight Front Speaker Negative Wire (-): BlueLeft Rear Speaker Positive Wire (+): Yellow/BrownLeft Rear Speaker Negative Wire (-): Yellow/RedRight Rear Speaker Positive Wire (+): Light GreenRight Rear Speaker Negative Wire (-): Yellow/Green
The negative wire is grounded.AnswerThe negative wire is grounded.
Car Radio Battery Constant 12v+ Wire: Orange Car Radio Accessory Switched 12v+ Wire: Yellow Car Radio Ground Wire: Black Car Radio Illumination Wire: Brown Car Stereo Dimmer Wire: Gray Left Front Speaker Positive Wire (+): Tan Left Front Speaker Negative Wire (-): Gray Right Front Speaker Positive Wire (+): Light Green Right Front Speaker Negative Wire (-): Dark Green Left Rear Speaker Positive Wire (+): Brown Left Rear Speaker Negative Wire (-): Yellow Right Rear Speaker Positive Wire (+): Dark Blue Right Rear Speaker Negative Wire (-): Light Blue Car Radio Battery Constant 12v+ Wire: Orange Car Radio Accessory Switched 12v+ Wire: Yellow Car Radio Ground Wire: Black Car Radio Illumination Wire: Brown Car Stereo Dimmer Wire: Gray Left Front Speaker Positive Wire (+): Tan Left Front Speaker Negative Wire (-): Gray Right Front Speaker Positive Wire (+): Light Green Right Front Speaker Negative Wire (-): Dark Green Left Rear Speaker Positive Wire (+): Brown Left Rear Speaker Negative Wire (-): Yellow Right Rear Speaker Positive Wire (+): Dark Blue Right Rear Speaker Negative Wire (-): Light Blue
The positive speaker wire is a solid color, your negative wire should have a stripe on it.
Car Radio Battery Constant 12v+ Wire: Orange Car Radio Accessory Switched 12v+ Wire: Yellow Car Radio Ground Wire: Black Car Radio Illumination Wire: Gray Car Stereo Dimmer Wire: Brown Left Front Speaker Positive Wire (+): Tan Left Front Speaker Negative Wire (-): Gray Right Front Speaker Positive Wire (+): Light Green Right Front Speaker Negative Wire (-): Dark Green Left Rear Speaker Positive Wire (+): Brown Left Rear Speaker Negative Wire (-): Yellow Right Rear Speaker Positive Wire (+): Dark Blue Right Rear Speaker Negative Wire (-): Light Blue
On the car battery, the positive wire is red and the negative wire is black. If the body of the car is metal or conducts electricity, then the body of the car serves as the negative wire. The metal in the engine serves as the negative wire.
Car Radio Constant 12v+ Wire: Orange Car Radio Switched 12v+ Wire: Yellow Car Radio Ground Wire: Black Car Radio Illumination Wire: Gray Car Stereo Dimmer Wire: Brown Car Stereo Antenna Trigger: Pink Left Front Speaker Positive Wire (+): Tan Left Front Speaker Negative Wire (-): Gray Right Front Speaker Positive Wire (+): Light Green Right Front Speaker Negative Wire (-): Dark Green Left Rear Speaker Positive Wire (+): Brown Left Rear Speaker Negative Wire (-): Yellow Right Rear Speaker Positive Wire (+): Dark Blue Right Rear Speaker Negative Wire (-): Light Blue
Car Radio Battery Constant 12v+ Wire: Orange Car Radio Accessory Switched 12v+ Wire: Yellow Car Radio Ground Wire: Black Car Radio Illumination Wire: Gray Car Stereo Dimmer Wire: Brown Left Front Speaker Positive Wire (+): Tan Left Front Speaker Negative Wire (-): Gray Right Front Speaker Positive Wire (+): Light Green Right Front Speaker Negative Wire (-): Dark Green Left Rear Speaker Positive Wire (+): Brown Left Rear Speaker Negative Wire (-): Yellow Right Rear Speaker Positive Wire (+): Dark Blue Right Rear Speaker Negative Wire (-): Light Blue
CAR AUDIO FRONT SPAEKERS LOCATION: DOORS LEFT FRONT SPEAKER POSITIVE (+) WIRE: TAN LEFT FRONT SPEAKER NEGATIVE(-) WIRE: GRAY RIGHT FRONT SPEAKER POSITIVE (+) WIRE: LIGHT GREEN RIGHT FRONT SPEAKER NEGATIVE (-) WIRE: DARK GREEN CAR AUDIO REAR SPEAKERS LOCATION:REAR DECK LEFT REAR SPEAKER POSITIVE (+) WIRE: BROWN LEFT REAR SPEAKER NEGATIVE (-) WIRE: YELLOW RIGHT REAR SPEAKER POSITIVE (+) WIRE: DARK BLUE RIGHT REAR SPEAKER NEGATIVE (-) WIRE: LIGHT BLUE
copper is positive