What Do L, L1, and L2 Mean on a Light Switch? Explained

Learn what L, L1, and L2 markings on light switches mean and how they relate to wiring different lighting circuits safely.

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L, L1, and L2 on a light switch refer to the different terminals for wiring. L typically stands for 'live' (the incoming power supply). L1 and L2 are used for connecting the switch to various output lines, usually for controlling different lighting circuits or features. Always consult a qualified electrician to ensure proper and safe installation.

FAQs & Answers

  1. What does the 'L' terminal on a light switch stand for? The 'L' terminal stands for 'live' and is the point where the incoming power supply is connected on a light switch.
  2. How do L1 and L2 terminals function on a light switch? L1 and L2 are terminals used to connect the switch to different output lines, allowing control of multiple lighting circuits or functions.
  3. Can I wire L1 and L2 terminals the same way? No, L1 and L2 usually control separate circuits or features, so each must be wired according to its intended purpose and local electrical codes.

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