So I blew up a neon lamp indicator light as part of a circuit breaker last night. Spectacular explosion and spark. I remember there was some detail about this bin full of of these breakers... just couldn't remember what it was. Turns out, this after finding a sub-note following a lot of web-surfing with the breaker manufacturer that there needed to be a resistor added to the indicator light. Yea, I saw that note on resistors, but thought such a thing was already in there... Because it was a 250v circuit breaker, the end user was to add a properly sized one so that dependant upon the actual voltage the breaker was seeing, that resistor could be changed dependant upon voltage. Oops, I now remember a detail about these breakers I forgot long ago. Simple enough, yet how could a resistor really play a factor in say a 120v line voltage system? Neon indicator lamp saw 120v, and instantly exploded. Added the proper resistor and it works just fine (once I replaced the breaker). How is such a thing working in concept?