Power outlets used on a scene should:

• A. Be easily off loaded from the truck.
• B. Have at least 4 outlets.
• C. Have Ground-Fault Circuit Interrupters.
• D. Twist-lock.

Answer: (C)

Power outlets used on a scene should have Ground-Fault Circuit Interrupters because firefighting environments often involve moisture, wet surfaces, and potential water exposure that raise the risk of electric shock. A GFCI continuously monitors the current flowing in the circuit and detects even small leaks to ground. When a fault is detected, it trips the circuit in a fraction of a second, cutting power and dramatically reducing the chance of serious shock or electrocution for anyone using the outlets or equipment. This protective feature is especially important for outdoor or damp locations and for portable tools and lighting near water or wet surfaces.

Other aspects like how easily an outlet can be unloaded from the truck, the number of outlets, or the use of twist-lock connectors are about convenience, compatibility, or durability, but they do not provide the immediate protection against ground faults that GFCIs offer.