Question

Article 725 in the NEC classifies transformers and low-voltage wiring for doorbells and chimes as ____ circuits.

a. Class 1
b. Class 2
c. Class 3
d. Class 4

Answer 1

According to Article 725 in the NEC, transformers and low-voltage wiring for doorbells and chimes are classified as Class 2 circuits.

Step-by-step explanation:

According to Article 725 in the National Electrical Code (NEC), transformers and low-voltage wiring for doorbells and chimes are classified as Class 2 circuits. Class 2 circuits have a maximum voltage of 30 volts and are considered to be low-energy circuits that pose a lower risk of electric shock. They are typically used for applications that require low-power levels, such as doorbells, fire alarms, and thermostats. Class 2 circuits have specific requirements for wiring and equipment to ensure safety.