Auxiliary Power Supplies at a Sports Grounds
The Guide to Safety at Sports Grounds (Green Guide) makes it clear that auxiliary power should be provided which is sufficient at the very least to enable emergency lighting, the public address system, CCTV and all other safety–related installations to function for a minimum of three hours after the failure of the normal supply.
However, if ground management wish to continue an event following the loss of the primary power supply it will need to ensure that the auxiliary power supply is capable of supplying the entire load for the ground for a minimum of three hours, or, where the event will run for more than three hours, to supply the entire load until the end of the event plus such additional time as it may take for all spectators to leave the ground following the end of the event.
Therefore where the intention is to continue with an event following the loss of the primary power source ground management should ensure that in addition to supplying the safety-related installations the auxiliary power will also need to maintain a safe level of lighting within areas used by spectators during the event, such as concourses and toilets, in addition to any lighting that may be required to illuminate the playing/activity area.
Where it is intended to continue the event on the auxiliary power supply that system should also be provided with additional back-up power for the safety related installations.