Two questions

[oldmansax]

(02-13-2014 05:48)ernst Wrote:  From your description I understand it is safe to just forget about that button. Am I right?

Any chance of tracing the wiring from the red buttoned breaker? If you can find out what it disconnects (protects) you may be able to discern what it does. It LOOKS like a main feed to the bus sub panels. Something that would trip if you have an accident that shorted out the main power supply. Since it is a manual reset and in a very inaccessible location, it was only meant to trip in extreme circumstances and required some amount of effort to reset it.

TOM