Welwyn W22 resistors

[ppppenguin]

There's no chance of 200V or 500V flashing across something that big. You'd need kilovolts for that to happen. Except for the highest values the voltage across the resistor is limited by power disspation as discussed above. Short term pulse overload is fine unless it blows the wire like a fuse.

Limiting Element Voltage is defined here. It's simply the largest steady or RMS voltage allowed across a resistor. Subject to not exceeding power disspation.
http://www.ttelectronicsresistors.com/te...-terms.asp