Question

Four electricians are discussing switchboards and panelboards. Electrician A says that switchboards and panelboards must provide front and rear access to meet accessibility requirements. Electrician B says that unused circuit breakers mounted in a panelboard should not be identified on the circuit directory until they're actually connected for a circuit application. Electrician C says that switchboards can be installed in cabinets. Electrician D says that switchboards aren't intended to be installed in cabinets. Which of the following statements is correct? A. Electrician B is correct. B. Electrician C are correct. C. Electrician D is correct. D. Electrician A is correct.

Answer 1

Switchboards and panelboards must provide front and rear access for easier installation, maintenance, and troubleshooting. Unused circuit breakers mounted in a panelboard should be identified on the circuit directory. Switchboards are not intended to be installed in cabinets.

Step-by-step explanation:

Switchboards and panelboards are electrical devices used for distribution and control of electrical power in buildings. Electrician A is correct that switchboards and panelboards must provide front and rear access to meet accessibility requirements. This allows for easier installation, maintenance, and troubleshooting. Electrician B is incorrect as unused circuit breakers mounted in a panelboard should be identified on the circuit directory even if they are not currently connected for a circuit application. Electrician C and D's statements are contradictory, but Electrician D is correct that switchboards are not intended to be installed in cabinets.