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These guys staged the whole thing. Several EV charging experts including myself commented on the video with the safety features that prevent this in the real world, but the creator has since disabled comments so they can no longer be seem.  

To make this happen...

-they disabled temperature monitoring 

-kept the charge cable tightly coiled

-physically hacked the pilot

-used a non-pilot controllable 80A + load 

-used an 80A breaker not a 60A for 48A charging or 50A for 40A 

In the real word

-The station would be on the appropriately sized breaker and would have tripped long before the cable melted cable. A 48A breaker will not run at 80A for an hour or more. ("overheating the devices to failure took anywhere from an hour to 5.5 hours"). 

-The temperature monitoring and throttling would have also commanded a reduction of current at 65C internal temp and disabled the station at 72C.

-The stretched cable to reach a real vehicle would dissipate heat build up much better, the EVSE, Vehicle and circuit breaker would have all reduced the current or tripped long before the cable caught fire.