Twist-lock receptacles are designed to provide what type of connection?

Twist-lock receptacles are designed to provide what type of connection?

• A. Secure
• B. Unsecured
• C. Non-insulated
• D. Straight pronged

Answer: (A)

Twist-lock receptacles are built to create a secure electrical connection that stays put even when cords are moved, bumped, or exposed to vibrations. The matching plug must be twisted to lock into the receptacle, which locks the connection mechanically and electrically. This positive locking prevents accidental unplugging, reduces contact arcing, and helps maintain a reliable power supply in dynamic or outdoor environments. The design emphasizes safety and continuity, not ease of accidental disconnection, not insulation issues, and not a simple straight-on plug.

Twist-lock receptacles are built to create a secure electrical connection that stays put even when cords are moved, bumped, or exposed to vibrations. The matching plug must be twisted to lock into the receptacle, which locks the connection mechanically and electrically. This positive locking prevents accidental unplugging, reduces contact arcing, and helps maintain a reliable power supply in dynamic or outdoor environments. The design emphasizes safety and continuity, not ease of accidental disconnection, not insulation issues, and not a simple straight-on plug.