Firestopping on cable tray penetrations between my lab and house (cc: @whitequark )

@azonenberg @whitequark You should never be allowed near a nuclear plant. :)

Aside: I've seen the results of arcing within the potting compound of a cable penetration from a power plant. Safety analysis is weird.

@arclight @whitequark I only had to pass residential building code and this was more than enough to make the inspector happy, lol.

(this is also only 120VAC not anything crazy)