A quick and simple demonstration of breaking a high current DC circuit. I made this video in response to the posts on various forums about the so called "emergency disconnects" that must be fitted to DC ev conversions and "must" be fitted inside the passenger cabin!!! That was only about 50v at 180amps. In a runaway ev that could be an order of magnitude greater! As stated in the video i'm willing to test any emergency disconnect product from any ev supplier and post a video on youtube of the results.