I bought some of this today at a car boot sale for a knock-down price, and am trying to work out the spec!
It is an expensive-looking track system which takes plug-in spot light units - each of which consists of a transformer and a holder for a 12v halogen bulb. The bulbholders say Max 50 watts - but there's no rating on the transformer bit! The plug-in units appear to be of several different vintages, and say "Mk 16 LT9008" or "Mk 14 LT8228" or "Mk 14 LT8224".
Are there any proud owners of similar equipment out there who can shed any light on what these numbers mean? Since the lampholders are integrated with the transformers it seems likely that the transformers are rated for 50 watts - but I'm not 100% certain.