Circuit Breakers cont.
The voltage is much higher (up to 250 kV).
The power to be interrupted is much higher. (Gavin power plant’s maximum power output is 2,600 MW which is nearly 3.5 million hp!)
Compare trying to quickly interrupt (shut off) a 3.2 hp residential fault (comparable to a lawn mower) with Gavin (comparable to almost 35,000 automobiles @ 100 hp per car).