Because of its fire-resistant qualities, asbestos was a popular choice for manufacturers of electrical equipment. Many of the products that electricians encountered on a daily basis, such as insulation and conduit, contained asbestos. They also drilled into and grinded out parts of switch panels, wiring motors, circuit boards, switch gear, and breaker boxes. Many of these products may have contained Bakelite and other molded asbestos materials. Drilling and sanding asbestos parts, like asbestos-containing arc chutes, could have released toxic dust into what were often cramped and confined workspaces for electricians.
Electricians also had increased risk of asbestos exposure because of their close contact with other trades that commonly used asbestos materials. These materials include, but are not limited to drywall, plaster, joint compounds, transite boards, asbestos ceiling tiles, HVAC equipment, insulated turbines and heating units. Drilling into walls to install new wiring and mount equipment could have exposed electricians to preexisting asbestos material.
Several asbestos products used by electricians are similar to those used in the construction industry. Some of the products handled by electricians include: