What is the minimum rating required for a receptacle?

• A. 125 V
• B. 30 A
• C. 15 A
• D. 20 A

Answer: (C)

Understanding receptacle ratings focuses on the current the outlet can safely carry on a typical 120‑V circuit. The minimum current rating for a standard general-use receptacle is 15 A, which matches the common 120‑V residential circuits and plugs. The voltage rating (125 V) tells you the voltage the receptacle is designed to handle, not how much current it can carry. A 30 A receptacle exists for heavier loads, but it isn’t the minimum you need for ordinary circuits, and a 20 A receptacle is only required on certain 20 A circuits. So, for typical use, 15 A is the smallest practical, safe rating.