NEC Commercial Electrical Practice Test

What is the minimum length of hallways in dwelling units that require at least one receptacle outlet?

1. 8 feet

2. 10 feet

3. 12 feet

4. 15 feet

The correct answer is: 10 feet

The minimum length of hallways in dwelling units that require at least one receptacle outlet is established by the National Electrical Code (NEC). According to the NEC, a hallway must be at least 10 feet long before a receptacle outlet is required. This requirement is in place to ensure that there are adequate electrical outlets in spaces where the distance between doors, rooms, or areas may result in a lack of access to power sources. By mandating receptacle outlets in hallways of this minimum length, the code promotes safety, convenience, and the practical use of electrical devices, especially those that might be needed in emergency situations or for general household use. In shorter hallways, it is often considered unnecessary to provide a receptacle outlet, as the likelihood of needing electrical access in such limited space diminishes. Therefore, a hallway must meet the 10-foot threshold to necessitate the installation of a receptacle outlet, aligning with the overall goals of maintaining safe and practical electrical installations in residential settings.