In what conditions are cabinets to be installed according to safety guidelines?

Cabinets should be installed in noncombustible materials to enhance safety and reduce the risk of fire hazards. Noncombustible materials are those that do not contribute to fire propagation and will not ignite in the presence of heat. This is crucial in environments where electrical components are being housed, as these components can generate heat and pose a fire risk if not properly contained. Installing cabinets in noncombustible materials ensures that, in the event of an electrical fault or overheating, the surrounding environment remains safe and minimizes potential damage.

The other conditions listed do not align with safety guidelines for cabinet installation. Dry conditions may be necessary for certain electrical equipment, but simply being dry does not provide the necessary safety assurances that noncombustible materials do. Wet conditions pose a risk of electrical shock and compromise the integrity of electrical installations. Installing in flammable materials directly contradicts safety protocols, as it increases the risk of fire in case of electrical failure. Thus, ensuring that cabinets are securely placed in noncombustible materials is essential for reducing hazards and promoting electrical safety.