From this engineer’s description of the 600,000 Watt BSS and JBL system used in the arena, some sense of the scale of the project emerges. ‘There are about 20 control racks up in the gantries in the roof of the Arena, each with separate A and B networks and components. One of those racks draws 260 Amps, and the cables to it – just the cables – weigh five tonnes.’