On a 120/240 volt distribution the neutral is sized along with the supply conductors. The sizing is based on the amperage of the service distribution.
Yes <<>> In North America, a three wire 120/240 volt system uses a neutral wire. For 240 volts two "hot" wires are used with no neutral.
The colour red designates that the wire is used as a live wire. The neutral wire is identified as white in colour.
In residential wiring the white wire is neutral on the 120 volt circuits. On a 3way circuit the red is the traveler and the white is neutral. On a 240 volt 3 wire connection the white & black are hot. On a 240 volt 4 wire connection the black and red are hot and the white is neutral.
Unless the switch has a pilot light on it there is need for a neutral connection to the switch.
A #10 copper conductor will limit the voltage drop to 3% or less when supplying 21 amps for 150 feet on a 240 volt system.
For a 30 amp 240 volt circuit, a wire size of 10 AWG should be used.
The main difference between 120 volt and 240 volt electrical systems is the amount of voltage they provide. A 120 volt system is commonly used for household appliances and lighting, while a 240 volt system is typically used for larger appliances like stoves and dryers. The higher voltage of a 240 volt system allows for more power to be delivered, making it suitable for heavier electrical loads.
A 1/0 aluminum conductor will limit the voltage drop to 3% or less when supplying 30 amps for 500 feet on a 240 volt system.
A 240-volt circuit typically consists of two hot wires and a ground wire, with no neutral wire. The hot wires each carry 120 volts, while the ground wire is used for safety purposes. In a 240-volt circuit, the hot wires complete a loop by connecting to a load or device that requires the higher voltage to operate.
If you mean a dual voltage motor 120/240 then yes these will operate on a 240 volt home distribution system.
For a 240V 30A circuit, you would typically use a 10-gauge wire for the neutral conductor. It's important to follow the National Electrical Code (NEC) and any local regulations when determining the appropriate wire size for your specific installation to ensure safety and compliance.
Answer for USA, Canada and countries running a 60 Hz supply service.To operate a 240 volt load in the home you use two adjacent breakers. This will give you a voltage of 240 volts where as one breaker to neutral will give you 120 volts.