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Residential Wiring - The Right Way!
Electrical Wiring and Safety
Electricity Around the World
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Among the differences are...
a) Wire colors
b) Voltage standards
c) Outlet types
d) AC cycles per second - the most common being 50 or 60 cycles per second. This is the number of times the voltage cycles between + and - per second. Some electrical items can be affected by this others can handle the chance.
I would highly recommend if bring a laptop computer when travelling to make sure it comes with a switching power supply, these are ones that an operate on power ranging from 100 to 250 volts or more, and the only adapter that will be needed is to adapt to the outlet itself in the foreign land.
There is also a major concern for people using battery operated mobility devices - such as wheelchairs and scooters. Ones that are specially designed for travel may come with a switching power supply that can charge the unit and handle 100 - 250 volt power, others do not - however do not assume it check the labels, and talk to your mobility supply provider. Also it may be a good idea to carry a small voltage meter (one with probes) that you can test the outlet at the hotel if in doubt, you can ask at the hotel desk and hopefully they should know, but the common counter person may know nothing more about electricity other than the fact when they plug something in it should work. You still must do your research before you travel, after a long day of travel you do not want to arrive at your hotel a half a world away and find out that you do not have the proper charging unit to charge your wheelchair or scooter. To play it safe always have the capabilities to charge the mobility device in both 110 - 120 and 220 - 250 range, and the proper outlet adapters so you are always prepared.
I have occasionally come across hotels that use some 110 volt outlets in a country that normally would use 220 standards. So if you use your own electrical items that do not have a switching power supply you must be sure before using it there.
Since I have never removed outlets and the like in places I visited (why would I), I am going to rely on external links to other sites that have some of the world standards documented, of course I personally cannot state the accuracy of the information on these sites but hopefully the information there will be useful to you.
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Written: March 22, 2012
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Donald Kerr / Wiring Done Right