This is basically the illumination that automatically replaces the normal lights when electricity supply is cut or interfered with. This kind of lights is for those situations which are unexpected such as sudden power blackout and someone intentionally interferes with a building electricity system maliciously causing total darkness in that premise. Darkness sometimes may pose health hazard to people or expose those living in that building to greater risk such as falling in the staircases or people bumping to each other and not to forget panic that darkness brings. Emergency lighting Pennsylvania has laid down some minimum standards to be strictly followed when one is planning to construct a building.

Apart from all the panic and getting injured, loss of power can result to big or huge losses by commercial companies whose goal is to make profit. This is because power outage will temporarily stop their activities and as well all know time lost is never recovered and also time is money.

The backup lights are required to be fully automatic and produce high level of illumination that is sufficient enough to facilitate all the occupants evacuate the building safely and without panicking. In the past most buildings did not incorporated emergency illumination during construction but today most buildings are installed with back up lights during construction period.

The process is recommended to be entirely automatic such that when light are cut it automatically and very quickly replaces it. The alternative power should be entirely automated and with potential to generate light sufficient enough for the building occupants to vacate that building or premise slowly, safely and without pressure or panic.

Most of building that were built some years back did not pay much attention to backup lighting since there were no legal provisions compelling them to do so but today there are laws and other statutory provisions compelling contractors and even architect to incorporate all safety regulation in a premise during the initial stages of construction.

Since all the architects must be familiar with all construction regulations they are the one to dictate what equipment and design is to be applied in a building. City Pennsylvania is known to have architect who are well qualified and experienced. The laws of this state have outlined some buildings that must implement all fire safety legislation s and requirements during construction and such building include multi stores, government buildings, museums, clubs, licensed buildings, and hospitals, residential hotels and also nursing homes.

Some types of emergency illumination that are commonly used include open area and bulkhead alternative lights. Open area lights which are also referred as anti panic are basically installed to provide alternative illumination for escape routes hence minimizing panic among the occupants and ensuring that light is sufficient enough to allow occupants of such buildings reach to a safe place through such escape routes.

Another form of illumination is lights for areas with high risk. This is lighting system which provides sufficient illumination facilitating safety of occupants who are in potentially dangerous situation or process and allow operators to properly follow shutting down procedures.