Wow... every fire department responding to any electrical lines down or transformer pole fire, their protocol is to evacuate the area, ensure that no one is in harm's way and call the utility company to isolate and shut down the power. Once the power has been shut down and verified by the utility company, then we are able extinguish a fire in a pole transformer. Fire fighting 101 : electricity and water don't mix.... I was blown away watching this....😮
The method done is called broken stream. You put high pressure on the fire hose, open the fire nozzle for a water burst then closing it quickly after a second so the electricity cannot travel freely from the water to your fire hose.