What voltage rating do secondary protectors need to be compatible with when used on circuits exposed to electric light conductors?

Secondary protectors used on circuits exposed to electric light conductors must have a voltage rating that is compatible with the potentially higher voltages those conductors can carry. Specifically, these protectors need to be capable of handling voltages above 300 volts. This is important because electric light conductors can experience surges or faults that may exceed lower voltage thresholds, putting connected low voltage systems at risk of damage.

Choosing a voltage rating of above 300 volts ensures that the secondary protectors can adequately absorb or redirect electrical surges, providing the necessary protection for sensitive communication equipment connected to low voltage systems. The higher voltage rating allows for a reassuring margin of safety, accommodating any fluctuations that might occur in the electric light conductors.

In contrast, selecting a lower voltage rating, such as below 150 volts or values like 100 volts or 200 volts, would not provide adequate protection against the potential risks associated with higher voltages, leaving the system vulnerable to damage from electrical surges or faults.