- San Francisco Bay Area, CA, USA
- Electrical Engineer
Door became a projectile, yes. The definition of shrapnel includes “... or other object thrown out by an explosion.”It sounds like the fasteners failed. Did the door turn into shrapnel?
I was at work when I was trying to post that image, but we are restricted from accessing any image hosting sites. I’ll have to bring my PC home to try to post it or email it to myself first (I use my iPad at home but that image is not on my iPad).
I got that image when I worked for Siemens during a training class on retrofitting new breakers into old switchgear and MCCs. It was used as a warning to us on the dangers of not paying attention to the available fault current. The image is a brand new Siemens breaker with too low of a fault rating put into an old MCC bucket and blowing apart under fault current stress, taking the door with it.