How does FPB distance relate to voltage ranges according to the material?

How does FPB distance relate to voltage ranges according to the material?

• A. FPB distance decreases as voltage increases
• B. FPB distance stays the same across ranges
• C. FPB distance increases with higher voltage ranges
• D. FPB distance is only specified for some voltages

Answer: (C)

FPB distance is a clearance that scales with voltage to keep dielectric strength safe. When voltage rises, the electric field across gaps becomes stronger, increasing the chance of arcing or insulation failure. To maintain a safe margin, the distance must grow for higher voltage ranges. That’s why FPB distance increases as voltage ranges get higher — it ensures the same level of insulation reliability across the voltage spectrum.

FPB distance is a clearance that scales with voltage to keep dielectric strength safe. When voltage rises, the electric field across gaps becomes stronger, increasing the chance of arcing or insulation failure. To maintain a safe margin, the distance must grow for higher voltage ranges. That’s why FPB distance increases as voltage ranges get higher — it ensures the same level of insulation reliability across the voltage spectrum.