The installation is similar to that of a 120V outlet. The part you have to be careful with is getting the correct size wire and breaker.
240V is installed using 3 conductor wire (Black, Red, White). The Black and Red hooks to a double-pole circuit breaker. The white and grounding the same as a 120V system.
You actually don't need a 3 wire cable for a 240 volt outlet. The neutral more than likely will not be used and a three wire cable over a two wire cable adds extra costs to the overall job total. If you can afford it however, it is a good idea as then the outlet can be used as a split voltage outlet, and the wiring is pre installed.
There will be 2 wires for installing a 240 VAC outlet. One red and one black.
120 Volts (roughly) in the US.
Every single electrical outlet in your house is in parallel with every other outlet in your house. All of yours are also in parallel with every outlet in every neighbor's house that shares the same pole transformer with your house.,
You would have to install a 230 volt outlet.
Of course it is physically possible. However, I strongly suggest you check with a qualified electrician who knows the particular electrical and building codes for your area as they can vary. Done incorrectly, you run the possibility of electrocuting yourself or someone else who uses that outlet, or setting your house on fire.
Ask This Old House - 2002 Installing an Outdoor Electrical Outlet Replacing Kitchen Drawer Hardware 9-20 was released on: USA: 19 February 2011
If your air/con uses standard domestic elec. supply it will have a standard plug on it, OK to plug in. These units are usually for windows. If it is the type with fan and compressor outside and air inducted into house it will be 3 phase supply and must be connected by an electrician or qualified fitter.
first disconnect all electrical supply to pump and then detach the pipe or pipefittings joined with pump's outlet and inlet.
plug a block heater plug into any household 120 electrical outlet just like plugging in a heater in your house
Probably an electrical outlet near the door of their house closest to driveway or car port.
Every device in your house that plugs into a standard outlet and also the various lights in use in a typical residence.