On 31/08/2019 09:29, John wrote:
I have a light fitting - bars with slidable lampholders - powered from a
circular transformer.Torroidal?

I changed one halogen for a LED. Can I continue to change all 4 - or will
this cause problems due the reduced load on the transformer?

Should be fine

I'd be less happy about an electronic transformer


--
Religion is regarded by the common people as true, by the wise as
foolish, and by the rulers as useful.

(Seneca the Younger, 65 AD)