>>9541
During Stream I had a thought about Nora's semblance and its limits; she powers up from electricity, including lightning, although there's a limit as indicated in V8E3 "Strings" although what that limit is, is unclear. It is enough to vaporize Weiss' Arma Gigas summon. Unfortunately we don't ever get an official number or even hint as to how strong the current on the door was, but we can extrapolate based on other things.
1) The original plan for her scarring was for Nora to strike a Power-Plant and overcharge her semblance. 500 MegaWatts is the average output of an average, conventional powerplant, with a standard output of a Nuclear powerplant being 1 GigaWatt (1000MW). The amount of electricity needed to power a city the size and technologically dependence of Atlas is about 3GW.
2) Nora awakened her semblance from being struck by lightning, which is 1GW of electricity in 1 millisecond.
Nora contacted the electric door for several seconds, which pushed her Aura to the limit and scarred her. This means her limit is at least 1GW and more likely higher, given the prolonged contact and her lightning feat.
This power up let her bust through blast doors that seemed to be roughly 1ft thick. The minimal PSI that a 1ft thick blast door can take is 50, and is usually 100-400 PSI. A Nuclear blast door is at least 300 PSI usually, with SS-18 missile silo blast-doors being rated to I think 6000 PSI. Going back to the minimum, that's at least 7200 pounds of impact per square foot. But that's how much they can withstand. To completely blow them off (i.e. go over the catastrophic failure level) would require at the very least, 100,000lbs of force per square foot, which translates to 4.8 MegaNewtons per square Meter.