Article 504 addresses which type of system?

Article 504 specifically addresses Intrinsically Safe Systems, which are designed to prevent the possibility of ignition in hazardous locations by limiting the energy, both electrical and thermal, to a level that is incapable of causing ignition. This is crucial in environments where flammable gases, vapors, or dust may be present, as it ensures that any electrical apparatus used does not become a source of ignition.

Intrinsically safe systems are widely used in industries such as oil and gas, chemical manufacturing, and other sectors where explosive atmospheres can exist. The regulations outlined in Article 504 provide guidelines for the design, installation, and maintenance of these systems to ensure safety and compliance with relevant electrical standards.

This focus on safety in potentially volatile environments underscores the importance of understanding and applying the principles outlined in Article 504 to protect both personnel and property from hazardous incidents associated with electrical systems.