A ___ is an acceptable means of connecting a fastened in place EVSE to the premises wiring system.

• A. Locking type, 1-pole, 2-wire grounding-type receptacle outlet rated 125 volts at 100 amps
• B. Nonlocking 3-pole, 4-wire grounding-type receptacle outlet rated 250 volts, three-phase, up to 100 amps
• C. Nonlocking, 3-pole, 4-wire grounding-type receptacle outlet rated 277/480 volts, three-phase, 30, 50, or 60 amps
• D. Nonlocking 3-pole, 4-wire grounding-type receptacle outlet rated 125/250 volts, three-phase, up to 60 amps

Answer: (D)

Connecting a fastened‑in‑place EVSE to the premises wiring is allowed through a listed receptacle connection that provides the correct voltage, current rating, and grounding. The best option describes a nonlocking, four‑wire grounding receptacle rated 125/250 volts and up to 60 amps. This matches the common 240‑V electrical supply used for Level 2 charging and gives a safe, interchangeable cord‑and‑plug interface with a dedicated grounding path.

The other configurations either omit a ground, use unsuitable voltages or phases, or describe industrial/high‑voltage setups that aren’t appropriate for standard permanent EVSE installations.