Arjun British Indian Ocean Territory 24 Questions 18 Answers 11 Best Answers 194 Points View Profile 3 ArjunCompetent Asked: December 20, 20202020-12-20T15:21:43+00:00 2020-12-20T15:21:43+00:00In: Technology Why does India use 220 volts when the USA uses 110 volts? 3 Why does India use 220 volts when the USA uses 110 volts? electricityphysics Share Facebook 1 Answer Voted Oldest Recent Dhiraj Telaiya, India 51 Questions 123 Answers 22 Best Answers 338 Points View Profile Best Answer Dhiraj Proficient 2020-12-28T02:02:40+00:00Added an answer on December 28, 2020 at 2:02 am The major reason behind the use of 110 volts of supply lies in the safety. Low voltage is more safe than that of high voltage. Basically, in a 220 volts supply, there’s only single safety wire also called “earth wire” but when electricity is supplied in the US, it is supplied with two 110–110 volts of supplies, thus providing two earth wires system, more the earth wire, greater the safety. As it is well known that it is current(amp.) that kills not the voltage. United States provides actually a 220 Volts residential service in the form of two 110 Volts supplies. It can be comprehend that US focuses more on the safety of its citizen but every additional features comes with price tag along with it. It impose heavy burden of charges over the US government for providing this extra feature of safety for its citizens. So, if you living in the US, you can run your personal appliances at 110 volts and heavy equipment at 220 volts. India adopted 220 V AC because the British introduced their system. They in turn had adopted this value because it was found to be economical. To transmit same power you need a larger diameter cable with 110 volts. This means more copper. Different countries adopted different values – Japan had 115 volts for example. 4 Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp You must login to add an answer. Username or email* Password* Remember Me! Forgot Password?