No serious tech firm would have all their servers in an open office space. Especially not dozens of racks. These servers would be in a temperature controlled room with fire suppression.
The cables in the server room are overheating and burst into flames. Data cables don't generate heat.
When the servers are overheating one character says "it's overriding the system, the circuit breakers are off". If that were true, then all the power should be off.
When the bullies throw the garbage on to the kid in the bathroom, there is a Timmies coffee cup. Very Canadian, not really American ...
The shown server room is a rather large room with multiple rows of machines. It is inconceivable to believe that such an installation would not be equipped with any kind of fire suppression system.
Earlier in the episode and in the pilot, it is stated that Ethan is 9 years old. However in the car to LeBlanc, Salazar says Ethan is 8 and later in the garage the father says Ethan is 8.