It is important to be clear about the type of downlight or spotlights you have when considering your options. Somoe recessed lights run directly from 240V mains power while the majority use a transformer to step the voltage fdown from 240 volts to 12 volts.
Two ways of determing which style of lighting
the fitting and see if a transformer is fitted to the light fitting
(the transformer sits in the ceiling space along side the light fitting).
The transformer will look like a little plastic rectangular box
something like the following image.
- Remove a globe and examine the pins on the fitting.
- 12 volt globes and fittings ONLY have this type ofpin and are labelled as MR16
- 240 volt globes and fittings ONLY have this type of pin and are labelled as GU10