What type of emergency lighting is required for office buildings with occupancy over 1000 according to the Life Safety Code?

In office buildings with an occupancy of over 1000, the Life Safety Code specifies that emergency lighting must be adequately designed to ensure safe egress during an emergency scenario. This requirement leads to the necessity for multiple types of emergency lighting systems to accommodate the different needs present in larger occupancy areas.

The correct choice indicates that types 1, 2, or 3 of emergency lighting can be used, which provides flexibility for the building's design and safety requirements. Each type offers distinct features suitable for various applications:

• Type 1 typically includes emergency lighting that is powered by a separate battery source and is used primarily for illuminating safe egress paths.

• Type 2 can refer to a combination of battery backup systems used alongside standard lighting circuits, ensuring that they automatically activate during a power failure.

• Type 3 pertains to lighting fixtures that comply with specific illumination levels set by safety standards, which are critical in larger spaces with higher occupancy.

This requirement ensures that all individuals can safely exit the building despite any emergency lighting failures, thus prioritizing occupant safety in large office settings. The combination of these types meets the comprehensive safety regulations laid out in the Life Safety Code, ensuring both redundancy and reliability in emergency situations.