What is true regarding Class 2 circuits and transformers?

Class 2 circuits are defined by their specific safety standards and operational parameters. A key aspect of these circuits is that they are intended to be powered by low-voltage sources, which helps in minimizing potential hazards associated with electric shock and fire risks.

When considering the derivation of Class 2 circuits from transformers, it is important to note that these circuits should not be derived from a large transformer using fuses. Class 2 circuits typically require the use of transformers specifically designed for low voltage and current applications to maintain their safety and regulatory status. This means that they should be supplied from dedicated Class 2 transformers that are rated for providing output with limited voltage and current, ensuring they remain within the designated safety boundaries.

Additionally, deriving Class 2 circuits from a large transformer often introduces risks associated with higher voltage levels and potential overloads. Hence, the requirement reinforces the regulatory compliance for safety in low voltage installations, ensuring that Class 2 circuits retain their intended purpose and safety features. This reasoning solidifies the view that Class 2 circuits should not be connected to larger transformers which might not conform to the same low voltage and current limitations necessary for their operation.