Explosion proof lighting is required in any environment where there is a risk of explosion or fire due to the presence of flammable gases, vapors, or dusts. These environments may include industrial settings, such as oil and gas facilities, chemical plants, and manufacturing plants, as well as underground mines and military facilities. Explosion proof lighting is typically required by occupational health and safety regulations, as well as building codes and fire regulations, to ensure the safety of workers and other individuals in these environments. In some cases, the use of explosion proof lighting may be required by law, while in other cases it may be recommended as best practice to reduce the risk of explosions and fires. It is important to follow all relevant regulations and guidelines when using explosion proof lighting to ensure the safety of workers and the public.