Do you know anything about Device for Connection of Luminaires (DCL), the European standard for ceiling light electrical connection?
The @wikipedia article for DCL needs your knowledge!
I want to learn about the motivation for its creation, how the design was determined, what other options were considered, and how it became an EU mandate. Edit the article or send me your best information sources.
https://en.wikipedia.org/wiki/Device_for_Connection_of_Luminaires