0
Because it is normally carrying alternating current which is alternating between positive and negative at 50 (60 in the US) cycles per second (hertz). Since the other end of the supply transformer is connected to earth at the substation the live wire is "live" with respect to earth. Usually it is used in conjunction with the neutral wire which is really just another earth at the substation.
What else can I help you with?
Are positive wire and hot wires the same?
No, positive wire and hot wire are not the same. Positive wire typically refers to the wire carrying positive voltage in a DC circuit, while hot wire usually refers to the wire carrying current in an AC circuit. The terms are specific to different types of electrical systems.
Do you connect a fuse to the live wire or the neutral wire?
A fuse is typically connected to the live wire in a circuit. This is done to protect the circuit from an overload or short circuit, as the fuse will blow or trip and cut off the current flow if there is an issue.
What wire in a circuit should contain the fuse?
The wire that connects the power source to the rest of the circuit should contain the fuse. This is typically the wire that leads directly from the positive terminal of the battery or power source. Placing the fuse in this wire helps protect the circuit in case of a short circuit or overload.
What are the names of the three wires in a plug?
The three wires in a plug are typically called live, neutral, and earth wires. The live wire carries the current to the appliance, the neutral wire completes the circuit and carries the current back, and the earth wire is a safety feature to prevent electric shocks.
Where is the positive wire on reverse light?
The positive wire for the reverse light is typically the one that carries power to the light bulb. It is usually connected to the switch that is activated when the vehicle is put into reverse gear. You can use a multimeter to test which wire is carrying power when the vehicle is in reverse.
Before you touch a wire in an appliance how should you make sure that it is NOT hot?
You can use a wire tester to determine if a wire is live. You can also touch the positive wire on the ground wire, if the wire produces a spark it is live.
How do you wire a coil on a 1976 ford truck?
positive wire is the live wire it goes to the + term ground goes to - term
Why does the current in a live wire remain positive even when the current may be an ac souce?
I don't think it will. If the source is AC, the live wire will alternate as well.
Is a brown wire negative or positive?
In electrical wiring, the color coding can vary by country. In the United States, a brown wire is typically used as a positive or live wire in DC circuits. However, in some AC wiring systems, it may also indicate a live wire. Always refer to local codes and standards for accurate identification.
97 Mercury mountaineer-you want to add air hornWhat wire do you hook the positive air horn wire to?
positive wire to another positive wire
What is an circuit test screw driver?
It is a screwdriver that has a light in the handle. When the tip of the screwdriver is touching the positive wire on an electrical socket, if it lights up when a finger is placed on the top of the handle, the positive wire is live.
Which speaker wire is positive?
The speaker wire with a red stripe or marking is typically the positive wire.
What is positive wire?
Positive wire is red, at least on automobile batteries.
How do you get -48v DC?
In a 48V DC system you ground the positive to 0V so the live wire will be -48V.
How do you tell a positive speaker wire from a negative speaker wire?
The positive speaker wire is a solid color, your negative wire should have a stripe on it.
Are positive wire and hot wires the same?
No, positive wire and hot wire are not the same. Positive wire typically refers to the wire carrying positive voltage in a DC circuit, while hot wire usually refers to the wire carrying current in an AC circuit. The terms are specific to different types of electrical systems.
Were can you find a free wiring diagram for a 1997 Chrysler lhs?
1997 Chrysler LHS Auto Alarm Wiring GuideBattery Constant 12v+ Positive Wire (+): Pink/Black and RedBattery Constant 12v+ Positive Wire Location: Ignition Switch HarnessStarter Positive Wire (+): Yellow/Gold DotsStarter Positive Wire Location: Ignition Switch HarnessIgnition Positive Wire (+): Dark Blue/Gold DotsIgnition Positive Wire Location: Ignition Switch HarnessSecond Ignition Positive Wire (+): Red/White/Gold DotsSecond Ignition Positive Wire Location: Ignition Switch HarnessAccessory Positive Wire (+): Black/OrangeAccessory Positive Wire Location: Ignition Switch HarnessSecond Accessory Positive Wire (+): Black/WhiteSecond Accessory Positive Wire Location: Ignition Switch HarnessParking Light Positive Wire (+): Black/YellowParking Light Positive Wire Location: In Drivers Kick PanelPower Door Lock Positive Wire (+): Orange/WhitePower Door Lock Positive Wire Location: In White Plug, Back Of FuseboxPower Door Unlock Positive Wire (+): Pink/VioletPower Door Unlock Positive Wire Location: In White Plug, Back Of FuseboxDoor Trigger Wire: Tan (-) And Tan/Red (-) Use Both. When connecting an alarm system, the tan (-) is for the driver's side and the tan/red (-) is for the passenger's side use both wires and diode isolate.Door Trigger Wire Location: In Drivers Kick PanelDomelight Supervision Wire (-): Tan (Requires Relay)Domelight Supervision Wire Location: In Drivers Kick PanelTrunk Release Positive Wire (+): Black/White (Requires Relay)Trunk Release Positive Wire Location: At Trunk Release SwitchHorn Negative Wire (-): Black/RedHorn Negative Wire Location: At Relay In FuseboxTachometer Wire Negative Wire (-): Red, White Or BlackTachometer Wire Negative Wire Location: At Ignition Coil PackBrake Light Positive Wire (+): WhiteBrake Light Positive Wire Location: At Switch Above Brake PedalFactory Alarm Disarm Wire (-): Light Green/OrangeFactory Alarm Disarm Wire Location: In Either Kick PanelFactory Anti-Theft System: N/AFactory Anti-Theft System Location: N/A
