Which class of fire is involved when you notice smoldering insulation around a shorted electrical outlet?

When smoldering insulation around a shorted electrical outlet is observed, it indicates that there is an electrical fire present. This scenario falls under Class C fires, which specifically involve energized electrical equipment.

Class C fires are characterized by their association with electrical materials, such as wiring, circuit breakers, and appliances, where the presence of electricity is a key factor. The concern with Class C fires is that they pose a unique hazard due to their reliance on electrical energy, making them dangerous to extinguish with water, as water is a conductor of electricity and can lead to electrocution or further spread of the fire.

In situations like this, the recommended extinguishing agents are those that are non-conductive and safe to use on electrical fires, such as carbon dioxide extinguishers or dry chemical extinguishers specifically designed for Class C fires. Understanding the correct classification of fires and the appropriate extinguishment methods is crucial for safety in the event of a fire emergency.