Code Hunter: Workplace Safety & Electrical Safety Month

Code Hunter
Code Hunter

To play this game, you need a sharp eye, a quick mind and a 2020 National Electrical Code book. The NEC can be accessed for free at (Fill-in-the-blank questions are looking for the exact word(s) used in the NEC.)

1. Equipment intended to interrupt current at fault levels shall have an interrupting rating at nominal circuit voltage __________ the current that is available at the line terminals of the equipment.


2. On a 3-phase, 4-wire, delta-connected system, the phase with the higher voltage to ground must be the __________ phase if installed in a panelboard, switchboard, or switchgear.


3. Unless modified by Article __________, all other NEC requirements apply to temporary wiring installations.


4. For service equipment rated __________ or more, the additional labeling requirements of 110.16(B) are required for other than dwelling units.


5. Overhead service conductors must have a vertical clearance of not less than __________ feet above residential property for voltages not exceeding 300 volts to ground.


6. If the highest __________ trip setting that a circuit breaker is rated or can be adjusted to is 1200A or more, an arc energy reduction method must be employed.


7. If the NEC requires a disconnecting means to be lockable in the open position, the provisions for locking must remain __________ the lock installed.


8. If the required disconnecting means for a transformer is located in a remote location, its __________ must be marked on the transformer.location


9. By special permission, smaller working space depths than 110.26(A)(1) would require are allowed for equipment whose live parts operate at no more than __________ volts RMS.


10. A receptacle’s grounding terminal shall only be used for connection to the __________ conductor.


11. Is a 2- or 3-pole circuit breaker required for a multiwire branch circuit?


Christel Hunter and Randy 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. Randy Hunter is an instructor and consultant specializing in electrical code and installations, and co-owner of Hunter Technical Services. He holds ten inspections certifications from IAEI and ICC. He has been a master electrician since 1988.