It is very unlikely you will ever come across a two-phase system, which is an archaic system that predates three-phase systems, in which two phase voltages are displaced from each other by 90 degrees.
The North American system for supplying residential consumers is a 'split phase', not a 'two phase' system, in which one secondary phase winding of a transformer is centre-tapped, thus providing a combination of 240 V between line conductors and 120 V between either line conductor and the centre-tapped neutral conductor. In all probability a 220-V load would operate normally at a nominal voltage of 240 V.
You can not change it. 440 volt is by design. However you run it with 220 single phase supply, but it would run far lower power.
If you mean a dual voltage motor 120/240 then yes these will operate on a 240 volt home distribution system.
North American household gas dryers run on 120 volts.
It is not recommended to rewire a 120-volt motor to run on 220 volts, as it can damage the motor and pose a safety risk. It is best to purchase a motor designed to run on 220 volts to ensure proper functioning and safety.
Use a transformer.
Yes, but most if not all 220v pumps are able to run on either 120 or 220. You just have to switch a couple of wires around in it.
Yes, 120 and 240 volts can be run in the same conduit.
If a motor is designed to run on different voltages there will be a wiring diagram on motor plate for 120 volt wiring. If not you will have to use a step up transformer to convert 120 V to the higher voltage.
Yes a 220 volt light bulb will run on a 120 volt circuit but at 1/4 of the wattage that the light bulb is rated at. A 100 watt light bulb on 220 would would be equal to a 25 watt light bult on 120 volt system.
The difference between a single phase and a three phase motor is the amount of power conductors that feed the device. As to the other part of the question a three phase motor will not start or run on single phase. The phase angles on three phase are 120 degrees apart on a single phase system they are 180 degrees apart.
needs to be over 105 to run ideal is 120-130 stock higher if modified
No, there are some window units that use 120 volts and are plugged into the nearest wall receptacle.