At a scene with multiple outlets, what safety device is required?

In a scene with multiple outlets, the requirement for a Ground Fault Circuit Interrupter (GFCI) is crucial for ensuring safety, particularly in environments where water may be present. A GFCI is designed to protect people from electric shock by interrupting the circuit when it detects an imbalance in electrical current, which is a common situation in fire fighting or emergency scenarios where equipment might be used near water sources.

The GFCI provides an essential layer of safety by constantly monitoring the incoming and outgoing current. If it detects that the current is not equal, indicative of a potential ground fault, it will quickly cut off the power supply, thereby preventing serious injury or electrocution.

Other options like surge protectors, voltage regulators, or fuse boxes serve different functions. Surge protectors help manage voltage spikes but do not provide the same level of personnel protection from ground faults. Voltage regulators stabilize voltage levels but are not directly related to electrical safety in terms of ground fault protection. A fuse box controls the flow of electricity and can interrupt circuits but does not inherently provide ground fault protection like a GFCI does. Therefore, requiring a GFCI in such situations emphasizes electrical safety for personnel on the scene, making it the appropriate choice.