Why does the USA use 110V and UK use 230-240V? What are the advantages? Explain me with calculation. Why do they use different frequencies like 50Hz, 60Hz? What is the reason?

Dec 3, 2015 · Why did the industry choose these seemingly unintuitive values of 110V and 220V for the mains AC? Is there a physical reason why they aren't simply 100V and 200V?

What exactly is the difference between a 110v and a 220v labeled power outlet? As far as I can see, the outlet is just a piece of plastic with some metal connecting to the power cables. Both types...

Nov 3, 2014 · Personally I find 110V more dangerous and the main reason is that you need bigger currents for the same appliance which in return considerably highers Joule heating, you get bigger …

Apr 4, 2021 · My understanding is that current flows, whenever there is a voltage difference between wires like a 110V hot wire and 0V neutral wire, giving 110V supply to a device. But how is it possible …

Oct 28, 2017 · He got a step down converter from 220V to 110V but then he noticed the frequency used there is 50Hz. What would the effects of using the device on a 110V 50Hz supply when the device is …

Oct 30, 2017 · Today my A/C compressor had given up its ghost and when I tried to disconnect it from the wall switch after turning OFF the wall circuit-breaker,I assumed like most 110V lines where only …

Jan 15, 2025 · The other way is to full-wave rectify the 110V AC into the ~160V DC. You can then use a switching regulator to bring that high voltage down to what you need it to be, in this case, 5V.

Nov 18, 2025 · I would seriously consider plugging in one of those tiny USB chargers for mobile phones, like the HTC chargers, and an LDO to bring the voltage down to 3.3 Volts, if this is a small run. For …

Why is mains power sometimes 110V and other times 120V? Ask Question Asked 12 years, 10 months ago Modified 8 years, 5 months ago