Electric power in Europe


Does anyone knows is the current power standard in the European Union, 230V 50hz, is delivered via a single 230V hot line and a neutral return or via two 115V hot lines?

I am considering a job offer in Spain, need to know if I will need to sell my gear or convert it. Thanks.
hepl
Most European countries have 220 volt, 50-hertz electric power. You can use a transformer to step the voltage down to 110-120 volt for use with American electronics, but the difference in the cycle rate is a problem for motor-driven equipment such as turntables (the lower cycle rate makes the turntable motor revolve more slowly than 60-hertz). Sometimes the turntable motor can be modified for the 50-hertz current, and sometimes it can be adapted to 50-cycle by the use of a different size pulley. Perhaps some of our European members (Ben Campbell, are you online?) can comment in more detail.
All i know is that france makes 75 % of its energy from nuclear fuel. It is facing pressure form other Pro gas turbine and coal counties to convert back. It is true nuclear energy is not as cheap as once believed... but in the wake of what going on in the mid-east it makes you wonder how much better off we would be with nuclear? We quit after the 3 mile island thing, and don't get me started on wind power and other such green things, they wont work, I need nuclear to power up these monos. ARGH,
I've have a bad day, need to de-compress. chucker