Final answer:
The statement regarding a Class 1 Extra Low-voltage Power Circuit being supplied from a transformer with a rated output restricted to 1000 VA at 30 V is True. This restriction is put in place to ensure safety from electric hazards.
Step-by-step explanation:
For a circuit to be classified as a Class 1 Extra Low-voltage Power Circuit, it is true that it must be supplied from a transformer or other device restricted in its rated output to 1000 VA at 30 V. Thus, the statement given can be considered True. This classification ensures electrical safety by limiting the power available, reducing the risk of electric shock and fire hazards.
Transformers play a critical role in the power distribution system by changing voltages at several points to ensure the efficient and safe transmission of electricity. They are designed to step up or step down voltages, with different transformers employed for different stages of the power distribution process.
The significance of restricting the transformer output to 1000 VA and 30 V for this class is tied to the amount of energy that can be transferred through the circuit. These limitations help to prevent injury or equipment damage from high-voltage electricity.