Texas Fire Alarm License Practice Test

Should the voltage be marked on P.F.L.A cables?

1. Yes, for safety

2. No, to avoid misapplication

3. Only if above 300 volts

4. Yes, on all types

The correct answer is: No, to avoid misapplication

The correct rationale for the answer is centered around safety and the potential for misapplication of power fire alarm system cables. Marking the voltage on Power Fire Alarm (P.F.L.A) cables is primarily to prevent any confusion that could lead to improper connections, which may pose hazards. By not marking the voltage, there is a reduced risk of users incorrectly applying the cables where higher voltage levels are not warranted or desired. Safety guidelines and standards often determine labeling practices, and in this case, the rationale reflects a cautious approach that aligns with maintaining operational safety and minimizing risks associated with misapplication. It highlights the idea that leaving the voltage unmarked is a safer practice for users who may not have expertise in handling or determining the correct application for different voltage levels. While other options may seem reasonable, they do not take into account the overarching goal of minimizing risk associated with potentially hazardous situations that could arise from incorrect usage of the cables.