Some time ago, to allow harmonisation across Europe, the specifications were changed to 230 volts RMS +10%/-6%, also running at a frequency of 50 Hz.
Thus the mains supply voltage will remain within European Union norms (standards) even if it varies between an upper limit of 253 volts and a lower limit of 216.2 volts.
A 240 volt 50 Hz appliance can have up to 3 wires altogether:
but this is not required if the appliance is of the type known as "double insulated".
The hot wire feeds alternating voltage from the power station to the load and, because the voltage is alternating, the load draws an alternating current. Then the neutral wire returns the current to the power station to complete the circuit.
Note
The United Kingdom and the Republic of Ireland (and some other countries elsewhere, most of which were formerly British colonies) use a power outlet plug and socket system which is totally different to the rest of Europe:
It is a very good plug and socket system but not many other countries have adopted it - probably because they didn't invent it!
Outside the UK and The Republic of Ireland (Eire), European countries use plugs where all the pins are round. Sometimes (but not always - it depends on the country) the plug's earth connection is not a pin but is a ground-socket within the plug which connects to a ground-pin which permanently protrudes from within the wall receptacle. That arrangement of pins and pin-sockets makes it impossible to insert a non-grounded plug into the receptacle! Another common European plug - the "Schuko" - does not use any earth pin but instead uses two clips which are positioned diametrically opposite one another on the outside edge of the plug.
An AC welding machine is one that uses electrical power from house or shop and has a controlled output in AC or Alternating Current.
Basically the service, maintainance and repair of many types of AC and DC motors, generators, and engine-like machinery.
AC voltages can be raise by transformers and transported over long distances without great power losses then converted back to lower household voltages by transfomers for our use.
Electrical power sensors are used to measure characteristics of electric power such as voltage, current, power, and potential degradation of insulation due to age. For AC circuits, an electric power sensor can also be used to measure power quality. Some electrical power sensors are incorporated into transformers or other components of the power distribution grid. Others are added to existing systems. Typically, these electrical power sensors measure one or more physical characteristics and convert them to electrical signals. Basic electric power sensor categories include electrical capacitance sensors, electrical frequency sensors, electrical resistance sensors, and electrical conductance sensors.
In the US, the common usage of these colors is: BLACK: Hot - connected to one phase of the service AC. WHITE: Connected to the Neutral of the service AC. GREEN: Connected to the GROUND bus at the service entrance. At the service entrance, the GROUND and the NEUTRAL bus are connected together.
230 for Europe
230 / 240 volts
The voltage is 230volts and this is the norm in Europe.
Your AC electrical service's voltage and frequency, and the types of plugs and sockets you can use, depend on the place where you live in the world.If you want more detailed information please see the Related Link and some Related Questions shown below.
AC, alternating current is used to power electrical outlets in the U.S..
to illuminate electrical noices
Go buy a book about household AC power and "How to do Wiring Safely".
An AC welding machine is one that uses electrical power from house or shop and has a controlled output in AC or Alternating Current.
FACTS = "Flexible AC Transmission Systems".
It could be battery powered, AC powered, or DC powered. They usually have an AC power lead supplied.
A Cobra power inverter changes direct current (DC) to alternating current (AC). It takes battery power and inverts it so that common household appliances can use the power.
It doesn't have to be rectified. That's the ONLY advantage; the electrical systems in all but the smallest planes are 400Hz AC systems.