TFM 12 Fire Alarm Technical Practice Test

P.F.L.A (Power, Fire Alarm, and other related cables) cables are specifically designed to handle conditions that can arise in fire alarm systems and similar applications. The standard voltage rating for these cables is not less than 300 volts. This rating ensures that the cables can withstand typical electrical conditions and potential surges that may occur in fire alarm operations without compromising safety or function. By being rated for at least 300 volts, these cables provide a buffer to handle the electrical demands safely, making them suitable for wiring in buildings where fire alarm systems will be installed.

Options that suggest ratings less than 300 volts might not provide adequate insulation or strength to cope with the operational requirements and safety regulations associated with fire alarm systems. Additionally, a fixed voltage like 200 volts would not encompass the variations that could be experienced in real-world applications, leading to potential inefficiencies or hazards. This is why the correct choice highlights the minimum voltage rating of 300 volts, aligning with industry safety standards and operational requirements.