On Thu, 21 Nov 2013 23:35:28 -0700, Danny D'Amico wrote:

Dead alarm system troubleshooting advice requested ...
http://farm6.staticflickr.com/5540/1...fcb528ab_o.gif

..snip to keep Aioe happy

I don't have experience with your set up. just trying to conceive of the
transient conditions leading up to the failure to better understand where
to look and what to replace. Wasn't that sequence a possible scenario when
your AC mains fail? Or did opening your 200A house breaker somehow supply
a 'no-load' to your generac and thus you put some really high voltage
places you didn't want? Or, switching back and forth did something. Or,
yeah, tough, two things broke - it happens. Aren't the built-in fuse links
inside those transformers in the primary, not the secondary?