A receptacle outlet used for heating, air-conditioning, and refrigeration equipment must meet which specifications?

• A. 125-volt, single-phase, 15- or 20-ampere rated receptacle, accessible for servicing, and located within 25 feet of the equipment
• B. 240-volt, three-phase, 30-ampere receptacle
• C. 120-volt, single-phase, 15-ampere receptacle located far from the equipment
• D. 125-volt, single-phase, 50-ampere receptacle located beyond 100 feet of the equipment

Answer: (A)

The key idea here is ensuring HVAC equipment is powered by a receptacle that is safe, practical to use, and easy to service. For heating, cooling, and refrigeration equipment that uses a cord-and-plug connection, the receptacle should be a standard 125-volt, single-phase outlet rated for 15 or 20 amperes. This matches typical residential outlets and can handle the common loads of HVAC gear without overloading the circuit.

Accessibility for servicing means the outlet must be reachable and not blocked by the equipment, so a technician can unplug the unit if needed. Placing the receptacle within 25 feet of the equipment keeps the cord length reasonable and avoids reliance on extension cords or overly long wiring runs, which improves safety and reduces voltage drop or damage risk.

The other options don’t fit because they propose incompatible voltages, phases, or amperage for a cord-and-plug connection to HVAC equipment, or they impose distances that aren’t appropriate for a standard service receptacle.