There have been lots of medias and papers in some countries (such as in Asia) reported the standard voltage in US and Canada was 110 V, so the people always think the 110 V is the right number in abroad compared some countries’ 220 V such as in China.
But, Are really Canada and US mainly use 110 V ?
The answer is NO. 110 V is a wrong number in Canada and US. Actually, there is never 110 V in both of Canada and US, even never in entire North America including Mexico (127 V).
So what is standard Voltages in Canada and US ? It is 120 V !
(Above image was from WikiTravel)
We list some countries and districts main voltages:
Canada, United States, Liberia
Colombia, Cuba, Guyana, Haiti, Jamaica, North Korea, Panama, Taiwan
Argentina, Brazil, China, Egypt, Hong Kong, Iran, Macau, Peru, South Korea, Thailand, United Arab Emirates, Vietnam
Austria, Belgium, Bulgaria, Czech Republic, Finland, France, Germany, Hungary, Iraq, Ireland, Israel, Italy, Malaysia, Monaco, New Zealand, Norway, Pakistan, Poland, Portugal, Romania, Russia, Singapore, South Africa, Spain, Switzerland (Swiss), Ukraine, United Kingdom
(Note: We do not list all countries in the world and all numbers of voltage above)
Due to above list, seems most of Countries in this world are using 230 V as their main voltages. But actually people often compared them as 110/120 V vs 220/230 V.