What is the key feature of substances classified as Class B under WHMIS?

The key feature of substances classified as Class B under the Workplace Hazardous Materials Information System (WHMIS) is that they can enhance burning. Class B substances include flammable and combustible liquids, gases, and solids that have characteristics that make them capable of fueling fires or explosions. This classification highlights their potential hazards in the presence of an ignition source, emphasizing the need for proper handling and storage guidelines to minimize risks.

Understanding this classification helps electricians and other professionals recognize the dangers associated with these materials when they are working in environments where such substances may be present. Safety protocols, including proper ventilation and the use of appropriate personal protective equipment, become paramount when dealing with Class B substances to prevent accidents and injuries in the workplace.