FREE NFPA NEC Questions and Answers
What NEC article covers the installation of photovoltaic (solar) systems?
Article 690 of the NEC provides guidelines and requirements for the installation of photovoltaic (solar) systems.
How often is the National Electrical Code (NEC) updated?
The NEC is revised and published every three years to reflect new technologies and safety practices.
According to NEC, what is the minimum depth requirement for burying non-metallic electrical conduits in a residential setting?
The NEC specifies that non-metallic conduits should be buried at least 12 inches deep to protect them from damage.
What is the NEC requirement for receptacles installed in bathrooms?
To prevent electrical shock, the NEC requires that all bathroom receptacles be protected by ground-fault circuit interrupters (GFCIs).
Which organization publishes the National Electrical Code (NEC)?
The NFPA is responsible for developing and publishing the NEC.
In the NEC, what does the term "ampacity" refer to?
Ampacity is the maximum amount of electrical current a conductor or device can carry before sustaining immediate or progressive deterioration.
What is the purpose of a bonding jumper according to NEC Article 250?
Bonding jumpers are used to ensure electrical continuity and safe grounding of metal parts.
Which of the following is required for all kitchen countertop outlets according to the NEC?
GFCIs are required to prevent electrical shock in areas where water is present, such as kitchen countertops.
What does NEC Article 210 cover?
Article 210 of the NEC focuses on the installation and specifications for branch circuits.
According to NEC Article 110, what is the required working clearance in front of electrical panels?
The NEC requires a minimum working clearance of 36 inches in front of electrical panels for safe operation and maintenance.
What is the primary purpose of the National Electrical Code (NEC)?
The NEC is designed to protect people and property from electrical hazards through proper installation standards.