Are you using 12 V energy efficient lamps? Then you will need transformers which will convert 230 V to 12 V.
For powers up to 150 W you can use electronic transformers, placed close to the lamp. It's ideal for small spaces. Our electronic transformers are protected against short circuiting, overloading and overheating.
For higher powers up to 400 W, ferromagnetic transformers are the best choice. You can place these further away from the lamp. This is ideal for large spaces.