Is a fire extinguisher required on a hoisting machine, and if so, what is the minimum specification?

A fire extinguisher is indeed required on a hoisting machine, which is a critical safety measure due to the potential for fire hazards in construction and industrial environments. The correct answer specifies that a minimum weight of 5 pounds for extinguishers rated B and C is necessary.

This rating signifies that the extinguisher is suitable for use on flammable liquid fires (Class B) and electrical fires (Class C), which are particularly relevant to the operation of hoisting equipment. Given the nature of materials often transported and the electrical components present in these machines, having an extinguisher rated for these classes is essential. Ensuring the extinguisher is of a minimum size—5 pounds—provides an adequate amount of extinguishing agent to address potential fire scenarios effectively.

While some may argue for larger extinguishers, the specified 5-pound rating ensures a balance between weight, portability, and firefighting capacity, making it a practical choice for operators on-site. Choices indicating that no extinguisher is required or those with minimum specifications of 2 or 10 pounds either neglect these critical safety needs or exceed practical recommendations for the equipment's intended use.