What is the minimum height for an electrical outlet installed above the floor?

• A. 6 inches.
• B. 12 inches.
• C. 24 inches.
• D. 36 inches.

Answer: (B)

The National Electrical Code (NEC) specifies that electrical outlets must be installed at a minimum height above the finished floor to ensure safety and accessibility. The correct minimum height for general-purpose outlets is typically 12 inches above the floor. This height helps prevent damage to the outlets from cleaning equipment and reduces the risk of moisture exposure, which can occur closer to the ground.

Additionally, this height allows for the use of standard furniture and appliances without obstructing access to the outlets. Although there are instances where different requirements may apply, such as for specific types of construction or unique applications, the general rule of 12 inches is widely accepted and adheres to established safety standards. The other heights listed do not conform to these standards, making them less suitable.