Yeah, the writer is a technical retard. The 440 that he speaks doesn’t exist and would never cover enough area. The generators at the nuke that I work at generator 18,000 volts and is stepped up to 230,000 for transmission over the service area. It is stepped down at various sub-stations but still not to such a low level as 440. For example, the power line in front of my house is 13.8 kV. The transformer on the pole in front of my house steps it down to 220 to my meter base and thence to my distribution panel where I can choose to install 2 pole breakers for 220 circuits or single pole breakers for 120 circuits.
Although I agree with you and others that the writer is incorrect (about the 440), you are just as incorrect about the transformer stepping the voltage down to 220. (note: this only applies to transformers used for normal applications like homes. There are manufacturing plants that have their own transformers which have higher outputs because their equipment requires it.)
where I can choose to install 2 pole breakers for 220 circuits or single pole breakers for 120 circuits.
See, even you admit there are 2 120 circuits that have to be combined to make 240.
Another TECHNICAL point. Everyone calls it 110 and 220, but it is really 120 and 240. Simple math would tell you that 120 + 120 doesn't equal 220. Two legs of 120 volts is the max voltage the transformer is supposed to supply. The electrical devices we use are designed to operate optimally at 110 and 220. That's because many times there is a bit of voltage loss in house wiring, so the transformer is designed to put out a bit higher voltage than the devices normally use.