To limit the probability that deficiencies in emergency electrical power supply systems will go unnoticed, which could lead to corrective action on such deficiencies not being taken, which could lead to emergency electrical power supply systems not operating as originally intended when there is a loss of normal power in a fire situation, which could lead to the inability of the emergency electrical power supply systems to supply fire protection systems, which could lead to:
This is to limit the probability of damage to the building.