Quiz on the Code

Article 750 Energy Management Systems

1. An energy management system is unable to override the implemented load shedding controls, which are designed to guarantee the minimum electrical capacity. The only exception to this restriction is in the case of the following: 
(a) fire pumps
(b) POS systems without backup equipment
(c) emergency systems
(d) legally required standby systems

2. In the event of detecting a malfunction within the emergency management system, an integrated system equipped with monitors and controls must undertake what specific actions? 
(a) cease current flow
(b) alert facility personnel
(c) continuing operation until critical a failure occurs
(d) disseminate an  emergency message to assigned responding personnel

3. Marking on EMS. The equipment that supplies the branch circuit, feeder, or service shall be field marked with the following information ______.
(a) maximum current setting
(b) minimum working clearance
(c) date of calculation and setting
(d) identification of loads and sources associated with the current limiting feature

4. Considering listing of energy management systems, they shall be one of the following?
(a) not required to be listed
(b) approved by the AHJ
(c) power source is listed independently of controls
(d) listed individual components assembled as a system

5. An energy management system is prohibited from initiating the disconnection of power to which of the following? 
(a) elevators, escalators, moving walks, or stairway lift chairs
(b) positive mechanical ventilation for hazardous (classified) locations
(c) ventilation used to exhaust hazardous gas or reclassify an area
(d) None of the above.



Answers
1. (b) Ref: 750.20(A)(1-4)
2. (a) Ref: 750.30(C)(2)
3. (b) Ref: 750.30(C)(4)
4. (d) Ref: 750.6(3)  
5. (d) Ref: 750.30(B)
6 . (c) Ref: 750.30(C)(3)(2)