Extinguishing agents that are safe for use on fires in or near charged electrical equipment include:

The use of extinguishing agents in situations involving charged electrical equipment requires careful selection to ensure safety. Carbon dioxide and dry chemical agents are widely accepted as effective for this purpose because they do not conduct electricity and can effectively smother flames.

Carbon dioxide extinguishes fires primarily by displacing oxygen, which is crucial for combustion. With the absence of sufficient oxygen, the fire cannot sustain itself. Additionally, since carbon dioxide is a non-conductive gas, it poses no risk of electric shock, making it safe to use near energized equipment.

Dry chemical agents, such as those containing monoammonium phosphate or sodium bicarbonate, also serve as excellent choices in electrical fire situations. These agents work by interrupting the chemical reaction of a fire, and their non-conductive nature ensures safety when applied to electrical hazards.

Other options contain agents that are less universally acceptable. For example, light water may not be suitable for electrical fires as it can conduct electricity, creating a hazard. Similarly, pressurized water and loaded stream could lead to electric shock, as these agents can conduct current. Thus, the combination of carbon dioxide and dry chemical is optimal for safe firefighting around charged electrical equipment.