Who is authorized to design and install the fire-extinguishing systems?

The correct choice emphasizes the necessity for specialized training and qualifications in the design and installation of fire-extinguishing systems. Fire-extinguishing systems, including dry chemical extinguishing systems, require a thorough understanding of fire dynamics, system functionality, and relevant codes and standards, including those outlined in NFPA 17.

Only those who have been properly trained and are qualified hold the expertise necessary to ensure that these systems are designed and installed effectively. This safeguards not only compliance with legal and safety standards but also guarantees that the systems will function correctly in emergency situations, ultimately protecting lives and property.

The other choices underscore less rigorous qualifications, suggesting that basic knowledge, general contracting skills, or merely being a licensed electrician would suffice. However, these roles do not inherently guarantee the specific training and knowledge required for the safe and effective design and installation of fire-extinguishing systems, making the selected option the most appropriate choice.