Inside the service-panel, that is how the higher voltage is achieved. To deliver higher amperage though, it requires heavier guage wire. Safety is key. Do it right.
I learned the other day, that's what 240 volt outlets do, bring in two 120 volt wires (Hot1 and Hot2), a neutral, and a ground.
Are you thinking about the one that has an extension cord under the garage door and the cord burned? But they can also carry greater amps.
No, some clown youtube guy made a funny video about making 240v from two 120v outlets. He then did the one thing you can't do with that type of circuit, he plugged the 240v "Load" in BEFORE he plugged both 120 volt male plugs in. By doing so, he energized the circuit on one side thus giving him an unpleasant 120v warning shock. Rob43
True in the US and everywhere I've been in the western hemisphere. But in Europe and Africa it's 240 from neutral and ground. So, if you get shocked by one side of 240 here it's like getting shocked by 120V. Not nice and can still be fatal, but not as bad as the European version which is the whole 240 volts. No, it's the one @Rob43 described. I'm not sure what search terms to use to try to find it. Not even Google turns it up for me. The guy had a weird combination of technical knowledge and profound foolishness. It was off the chart on the scale of "kid's don't try this at home" stuff.
