Emergency lighting is lighting for an emergency situation when the main power supply is cut and any normal illumination fails.  The loss of mains electricity could be the result of a fire or a power cut and the normal lighting supplies fail this may lead to sudden darkness and a possible danger to the occupants, either through physical danger or panic.

• A test for the full rated longevity of the emergency lights must be carried out.
• The emergency lights must still be illuminated at the end of this test.
• The result must be recorded and, if failures are detected, these must be remedied as soon as possible.
• All checks will be undertaken in accordance with BS 5266 standards.