Swiss Wiring Code

• For electrical systems; relevant mostly for installing lamps in my case. Source: https://www.englishforum.ch/other-general/160978-swiss-wire-coding-electricity.html
• Green/Yellow = Earth
• Light Blue (or yellow in old systems) = Neutral
• Black, White or Red = Live
• All colours (except green/yellow, Light Blue and Yellow) = Switched Live.