Code Hunter: Alternative Energy, NEC-2020

Test your NEC code knowledge by taking this quiz on alternative energy requirements in the 2020 NEC.

1. A device that uses power electronics to convert one form of electrical power into another form of electrical power is known as a(n) ___.


2. An energy storage system installed in a one- or two-family dwelling shall not exceed ______ volts between conductors unless live parts are inaccessible during routine maintenance.


3. Article __________ covers power production sources that operate in parallel with a primary source of electricity.


4. The dc conductors of a PV system shall not occupy the same __________ as PV system ac conductors unless separated by a barrier or partition.


5. If a dc microgrid is connected through an inverter or bi-directional converter with an ac source, the installation must comply with Article _________.


6. For a PV system, the rapid shutdown for conductors inside the array boundary must limit the voltage to not more than __________ volts within 30 seconds of the shutdown initiation.


7. A(n) __________ shall be installed between a wind-electric system and any loads served by the premises wiring system.


8. The location of the manual fuel shut-off valve for a fuel cell must be marked at the location of the __________ for the building or circuits supplied.


9. Power to a premises wiring system fed by a stand-alone system shall be permitted to have less capacity than the _____ load.


10. For large-scale PV installations (5,000 kW or more), buildings whose sole purpose is to house supply station equipment shall _______ comply with 690.12 for rapid shutdown systems.


11. If the dc circuit conductors of a PV system have sufficient ampacity for the maximum circuit current, do they require any overcurrent protection?


Christel Hunter
Christel Hunter is vice president of standards for Cerro Wire. Chris serves as President for the Southern Nevada Chapter of IAEI. Chris also serves on NEC CMP-6 and CMP-13, NFPA 921, NFPA 70B, NFPA 73 and UL STPs 62, 83, 719 and 4703. Chris is a Professional Safety and Health Officer, Certified Standards Professional, Master Electrician, and LEED Accredited Professional.