CME Special Occupancies and Equipment Questions and Answers

Question 1

In a hospital's essential electrical system (EES), which of the following loads is required to be connected to the critical branch?

Accepted Answer

Task illumination and select receptacles in the intensive care unit (ICU).

Answer

The hospital's main HVAC system.

Answer

Elevators selected to provide service to patient floors.

Answer

Selected receptacles in the main lobby.

Question 2

An electrician is replacing a single-phase, 240-volt pool filter motor at a residential dwelling. According to NEC Article 680, what is the primary requirement for the branch circuit supplying this motor?

Accepted Answer

It must be protected by a ground-fault circuit-interrupter (GFCI).

Answer

It must be hard-wired using Type MC cable.

Answer

It must have short-circuit and ground-fault protection not exceeding 125% of the motor FLC.

Answer

It must be supplied from a dedicated transformer.

Question 3

In a commercial garage used for repair and service where adequate ventilation is not provided, what is the default classification for the area extending from the floor up to a level of 18 inches?

Accepted Answer

Class I, Division 2.

Answer

Unclassified.

Answer

Class II, Division 1.

Answer

Class I, Division 1.

Question 4

When installing an equipotential plane in a concrete floor area of an agricultural building where livestock are confined, which of the following is a key requirement according to NEC 547.10?

Accepted Answer

The plane must be connected to the electrical grounding system with a copper conductor, not smaller than 8 AWG.

Answer

The equipotential plane is only required if the building has a metal frame.

Answer

The plane must be made of non-conductive materials to isolate the livestock.

Answer

The equipotential plane must be connected only to a separate, dedicated grounding rod.

Question 5

Which of the following best describes the overcurrent protection requirement for a feeder supplying an electric fire pump motor, according to NEC Article 695?

Accepted Answer

The overcurrent device must be selected or set to carry the motor's locked-rotor current indefinitely.

Answer

The overcurrent device must be omitted and replaced with an alarm that indicates an overcurrent condition.

Answer

GFCI protection is required for all fire pump circuits regardless of voltage.

Answer

The overcurrent device must be set to trip at 125% of the motor's full-load current.

Question 6

An electrician is installing 125-volt, single-phase, 20-ampere receptacles to provide shore power to boat slips at a new marina. What specific requirement must these receptacles meet per NEC Article 555?

Accepted Answer

Each single receptacle providing shore power must be provided with GFCI protection.

Answer

Each receptacle must be located at least 48 inches above the dock surface.

Answer

Each receptacle must be of the locking and weather-resistant type.

Answer

Each receptacle must be supplied by a multi-wire branch circuit.