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.
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∙ 11y agoBecause they are "in-phase". In order to get 240v, you need two 120v Alternating Current lines that are 180° out of phase, that is, opposite phases. Only when one line is +120v and the other -120v will you see 240v between the wires.
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If you mean a pump wiring diagram, it depends what kind of pump you have, submersible or Jetpump. Both are very simple wiring and don't need a diagram. Both should be installed by a qualified well technician.
Wire in conduit for underground feeders has to have an insulationrating for wet and damp locations. In the marketplace there is also wiring thathas an insulation rating for direct burial that does not need to be installed into conduit.
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To install a 240V line for baseboard heating that runs about 35 feet, you will need to first determine the wire size needed based on the amperage of the heater. Then, you will need to run the appropriate type of wiring (such as 10/2 or 10/3 copper wiring) through the walls or attic to the location of the heater. It is recommended to consult a licensed electrician to ensure the installation is done safely and up to code.
Connect the black wire from the flood light to the hot wire (usually black or red) in your electrical box, the white wire to the neutral wire (typically white), and the ground wire to the grounding screw in the box. Make sure to turn off the power at the circuit breaker before wiring to avoid electric shock. Hiring a licensed electrician for installation is recommended.
No, joining a red and black wire together will not give you 240V. To obtain 240V, you typically need to connect two hot wires (black and red) and a neutral wire. It is crucial to follow proper electrical codes and guidelines to ensure safety.
In the US, both 120v and 240v will be needed for your home, as different appliances need different voltages. Your TV needs 120V, while your electric dryer and stove will need a 120V/240V supply. If you have an electric water heater, or central AC unit, they will need a 240V supply.
Using a box that is hire voltage than what you need can cause a short, and even a fire. So using a 240V box, when all you need is a 110v receptacle, wouldn't be a good idea.
Automotive positive and negative wiring colors can be any color, blakc can be hot, white etc, you need a wiring diagram
Actually, many components do not have or need a neutral. 3-phase equipment such as motors, heaters and the like do not use a neutral. Some older 240V electric clothes dryers (in the US) did not have a neutral. The 2.5 ton, 240V airconditioner on my roof doesn't use a neutral either. Fluorescent fixtures do however, as you note, need a neutral. The two power wires coming out of the ballast are usually a black and a white wire in the US, the white wire is the neutral. On older fixtures with a separate starter, the white wire (neutral) may not go to the ballast. Instead it goes to the tube socket. It's still white, though. Note that many of the current rapid-start fixtures also need a grounded reflector to reliably start. These fixtures will require a hot, neutral AND ground conductor, properly connected, to work.
If the 240V 3-phase service is 240V phase-to-phase, then you can get 240V single-phase by simply picking two phases (poles, as used in the question) and connecting the load across them. This is simply one third of a standard delta connection. If you need 120V/240V split phase, i.e. with a neutral, as used in residential services, you will need a transformer. If the service is actually a four wire "quadraplex" service, however, you will probably already have that 120V/240V with neutral connection phase available. In this case, you will need to pick the two phases correctly in order to get the proper 120V service half.
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For a 70A 240V circuit, you would need a wire with at least an 8-gauge thickness to ensure it can safely handle the current without overheating. It's always best to consult with a licensed electrician for specific wiring requirements based on your local electrical code regulations.
To connect a 240V air compressor with two line terminals at the pressure switch, you will need a 240V power supply. Connect the white wire from the power supply to one line terminal and the black wire to the other line terminal at the pressure switch. Make sure the motor side wires are connected to the corresponding terminals. It's important to verify the voltage requirements of the motor and ensure proper wiring for safety and functionality.
To rewire a European 240V welder to work on US 240V, you will need to change the plug to a compatible US plug and verify that the internal wiring of the welder is compatible with the US voltage. You may also need to add a step-down transformer to ensure the correct voltage is supplied to the welder. It is recommended to consult with a professional electrician to ensure the modification is done safely and correctly.