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Yes, an AC unit typically needs a neutral wire. It provides a return path for current and is necessary for the operation of control circuits and electronic components.

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Manmeet Pandit

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11mo ago

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Why don't you need a white wire when wiring a 240v a c unit?

White wire is usually used as a neutral conductor and a 240v ac unit has no neutral. Each leg of the 240 volts is a "hot" leg However, very often a 12/2 or 14/2 NM cable is used to power small window ac units using 240v. In this case one of the conductors is white, but is not a neutral. It is good practice to mark the white wire with black tape so it is readily identified as a hot wire.


Can cross-wiring an electrical outlet cause a household fan motor to smell like it is burning?

I think by 'cross wiring' you mean reverse polarity. This means the hot wire is connected to the neutral screw and the neutral wire is connected to the hot screw. This shouldn't have any impact on an AC motor, since AC voltage already changes polarity 60 times per second.


What colour wire is negative - green or black?

Most likely your "purple" was once black, and is the negative; to verify, trace "purple" to ground, or touch the leads of an ohmmeter to purple and ground. You should get "0" ohms at the correct wire. This assumes a negative ground.


What gage wire is needed for a 35 amp ac?

Use 8 gauge wire.


Is blue wire positive?

If you are talking about the wiring of buildings/houses then blue would be a hot with ac current. If you mean wire in electronics then it would also "usually" be a positive but if there is any danger you should never assume. A tester could save you from having to buy a new component or your life.AnswerThe European convention is that blue insulation indicates a neutral conductor, brown, black, or grey insulation indicates a line conductor, and a yellow/green striped conductor indicates an earth conductor.

Related Questions

What is the wire size for a 35 amp breaker to a ac unit?

You will need to use #8 wire.


Why don't you need a white wire when wiring a 240v a c unit?

White wire is usually used as a neutral conductor and a 240v ac unit has no neutral. Each leg of the 240 volts is a "hot" leg However, very often a 12/2 or 14/2 NM cable is used to power small window ac units using 240v. In this case one of the conductors is white, but is not a neutral. It is good practice to mark the white wire with black tape so it is readily identified as a hot wire.


What is the recommended wire size for an AC unit installation?

The recommended wire size for an AC unit installation is typically 10-gauge wire.


Why neutral wire does not carry current in closed ac circuit?

The neutral wire does carry current in a closed AC circuit. Clamp a clamp on amp meter around the neutral wire directly after the circuit load and it will read the same current as is on the "hot" wire.


When an ac bulb glows the phase wire gives a shock when touched by hand but the neutral wire doesn't?

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How do I wire an AC unit to a breaker box?

To wire an AC unit to a breaker box, you will need to connect the AC unit's wiring to a dedicated circuit breaker in the breaker box. Make sure to follow the manufacturer's instructions and local electrical codes to ensure proper installation and safety. It is recommended to hire a licensed electrician for this task if you are not experienced in electrical work.


How do you wire an AC electromagnet?

To wire an AC electromagnet, you would typically connect one end of the coil to the live terminal of the AC power source and the other end to the neutral terminal. It's important to use appropriate wire size and insulation to handle the current and voltage of the AC supply. Additionally, you may need to use a relay or switch to control the circuit.


What is the wire size for 50 amp breaker to ac unit?

For a 50 amp breaker to an AC unit, you would typically use 6-gauge wire. It is important to consult local electrical codes and the manufacturer's specifications for the AC unit to ensure the correct wire size is used for safety and proper operation.


How do you wire an AC disconnect?

To wire an AC disconnect, first turn off the power to the unit. Connect the hot wires to the terminals marked "Line" and the neutral wires to the terminals marked "Load." Make sure to follow the manufacturer's instructions and local electrical codes. Finally, secure the wires with wire nuts and close the disconnect box.


Which wire on an ac cable Is the neutral the one with or without writing?

On a lamp cord or two wire extension cord the writing is on the neutral side. Double check this by tracing the wire down to the cord end. You should find the neutral wire connected to the wider blade, of the two blades, of the plug cap


What is the recommended AC wire size for a residential air conditioning unit?

The recommended wire size for a residential air conditioning unit is typically 10 or 12 gauge wire.


Do you need an AC unit to have heat in a mustang?

no