I understand that the 17th Ed regs state that connections in live circuits must be accessible for maintenance and inspection, therefore screw type junction boxes can no longer be used in ceiling spaces unless specific access is catered for.
How does this work with low voltage lighting transformers. Many transformers that I have seen have screw type terminals and these are generally placed in the ceiling space in very close proximity to the downlight fitting. Either that or the have small tails for connecting in a connection block. Of course these can be accessed by removing the light fitting - but is that classed as "accessible"? If so, what is stop screw junctions being put anywhere in ceiling spaces as long as they're close to a downlight hole?
Any clarification would be appreciated.