What is the purpose of the 10kw genset on a fire truck?

The purpose of the 10kw generator set (genset) on a fire truck is primarily to operate firefighting equipment. Firefighters often rely on various tools and equipment that require electrical power, such as lights, fans, or specialized tools like saws and extrication equipment during rescue operations. The genset provides a reliable source of power to ensure that this critical equipment can function when needed, especially in situations where access to standard electricity might be unavailable or impractical.

While it is true that gensets can also indirectly support other functions, such as lighting the scene or providing power for battery charging, their main role is centered on ensuring that firefighting and rescue operations can be conducted effectively and safely using powered tools.