Sorry, but it is impossible to get 220v (240) from one leg, it has to be two legs as
each leg is 120v.
breakers are rated by wire size, not voltage. the appliance manufacturer will probably specify amperage.
Normally the white wire is neutral, and the black is hot. But if the power comes into the ceiling box and the light is controlled by a switch leg the white my very well be hot. If there is only one wire in the switch box that is a switch leg.
No houses are wired for 440 volts. In the USA, most houses are wired for 240/120 volts called single or split phase. That means each "leg" of the service is 120 volts to ground, but across the two it sums to 240 volts, since each "leg" is 180 degrees out of phase with respect to each other. When one "leg" of the service is at +120 volts, the other "leg" is its mirror image, at -120 volts. In this way, connecting across the two yields twice the voltage of either leg to ground, allowing the use of 240 volt or 120 volt appliances depending on how connected- to ground or across "legs". Most other countries with 220-240 volt appliances do not use split phase service. There is only the one phase to ground and in those countries the incoming line is 220-240 volts to ground, voltage depending on the country.
You need a neutral wire. Household 220 is two 110V hot wires that are in opposite phases, so the voltages add. Each of these hots will provide 110V when used with a neutral. It may be routed with the two hots, and it may not. If there isn't one there, it will need to be run from your breaker box. If you have only one outlet or appliance to connect, you only need one of the two hots on one terminal of the outlet. The other side is where you need the white neutral.
Two pole what? Switch, breaker? 2 pole does just that. Either switches two separate sources like different legs of a 220 volt circuit or switches both the hot and neutral in a 120 volt circuit or plus and minus in a 12 volt circuit or a two pole breaker takes 2 separate 120v legs in a home breaker panel. Each leg of 120 volt breaker panel is 120 volts to ground and 240 volts between them. The electricity entering your house looks like a sine wave with each leg being 180 degrees out of phase from the other. The double pole breaker takes each separate leg to the device it is powering and provides 240 volts.
Generally, yes. Most US home services are 220 volt (240, 220 are `nominal' names) which are split into two 120 volt legs. You can find wiring information ont he internet, but generally, the 220 volt systems have a 120 volt leg, a common ground and then another 120 volt leg. Added together, they're 220 volt but by splitting them, you'll end up with two 120 volt legs. If you're not sure about how to wire them up, contact a qualified electrician to help you. House wiring can be very dangerous if you don't know what you're doing as well as lethal. When in doubt, don't.
277 volt systems aren't normail systems
breakers are rated by wire size, not voltage. the appliance manufacturer will probably specify amperage.
In residential wiring, if it is used as a switch leg or in 3 wire 240 volt circuits.
The 2013 Chevrolet Volt has 42.1 in. of front leg room.
The 2012 Chevrolet Volt has 34.1 in. of rear leg room.
The 2014 Chevrolet Volt has 42.1 in. of front leg room.
The 2011 Chevrolet Volt has 42.1 in. of front leg room.
The 2013 Chevrolet Volt has 34.1 in. of rear leg room.
The 2011 Chevrolet Volt has 34.1 in. of rear leg room.
The 2012 Chevrolet Volt has 42.1 in. of front leg room.
The 2014 Chevrolet Volt has 34.1 in. of rear leg room.