Which of the following is NOT a requirement for lighting systems operating under Article 411?

The requirement for lighting systems operating under Article 411 focuses on the limitations of voltage and current for low-voltage lighting systems. Article 411 specifically states that the power supply for these systems should not exceed 30 volts, which is established to ensure safety and reduce the risk of electric shock.

The option stating that the power supply should not exceed 40 amps is not a requirement under Article 411. Instead, the limitations around amperage for lighting systems in this article focus more on the idea of limiting the current levels for safety, often referenced in terms of low voltage and smaller amperages. The requirement relative to current for these systems is more stringent with a typical emphasis on ensuring low voltage and not necessarily setting a limit at 40 amps.

Furthermore, Article 411 indicates that the lighting systems are designed to operate safely within specified parameters to protect both the installation and the users. The requirement that the lighting system must have safety features built-in ensures that there are protective measures in place to manage faults and potential hazards.

Therefore, the correct understanding of the requirements within Article 411 clarifies that the option about not exceeding 40 amps stands out as it does not align with the established guidelines for these types of lighting systems.