Electrical adapter cables, the red plug cables have a red 5 pin 32A male plug, with either one or two outlets, each comprising 50cm long, 2.5mm² (25A) arctic flex and a blue 3 pin 16A female socket. Power outlets of this type are found in the outer paddock of the national pits at Silverstone.
The blue plug connector converts to a 13A twin UK domestic socket vis a 40cm cable.
Please Note: Max current draw per outlet is 16 Amps.