Morocco, Vietnam, Neth. Antilles, and some Middle East countries.
It depends in which country you are located. Through out the world that are different electrical voltages. The electrical manufactures knowing this and wanting to sell world wide make bulb to run on that countries electrical system. The two main voltages that bulbs operate on are; in 60 Hertz countries 120 volts and 50 Hertz countries 230 volts.
Electricity generation stations throughout Europe generate supplies at 50 Hz.Click on the Related Links shown below - and see the answer to the Related Question also shown below - for more information about the electricity supplies used as standard in each of the countries around the world.
Countries use either 220 volts or 110 volts based on historical decisions, grid infrastructure, and safety regulations. North America and some parts of Japan use 110 volts, while Europe, Asia, Africa, and Australia use 220 volts. Each system has its benefits and challenges, but the choice typically depends on what was established when electricity infrastructure was first developed.
All over Europe we have now 230 volts. Its all history and politics. World map of voltage and frequency: http://en.wikipedia.org/wiki/Image:WorldMap_Voltage%26Frequency.png Cheers ebs
No country in the world uses 138 volts. They use 100, 110, 115, 120, 127, 210, 220, & 240.
"50 Hz" is the shortened form of "50 hertz" which means "50 cycles per second". 50 Hz is the frequency of alternating current (ac) used by national electricity power services in many countries in Europe and elsewhere in the world whilst in USA, Canada and many other countries it is 60 Hz.
The world has not developed a machine able to make electricity from fruits.
50 Hz is the frequency of alternating current (ac) used by national electricity power services in Europe and several other world areas whilst 60 Hz is used in USA, Canada and many other countries in the world. 50 Hz means or specifies "50 cycles per second". Hz is the international technical abbreviation for the scientific unit of frequency, the hertz.
See the answer to the Related Question shown below for a lot of information about household electricity supplies all around the world.
240 Volts. <><><> In USA, Canada and other countries using a similar 60 Hz houshold electricity supply system, they are dual-voltage. Some of their components, such as the timers, use 120 V while the heating element uses 240V.
British electricity is of high quality as one of the leading developed countries in the world. The most well known supplier of electricity in the UK is 'British Gas'.