https://www.integralfm.co.uk/b....log/emergency-lighti
Emergency lighting is required in emergency situations when the main power supply is cut or due to some reason, it’s broken. Without light, there will be complete darkness, which is a possible danger to workers. This situation can cause physical damage, accidents, and a sense of panic.
As a legal obligation, all commercial sites should have weekly flick tests to check if emergency lights are working fine. An annual test also needs to be conducted to see if lights work in an emergency or not.