Which of the following electrical hazards may face mitigation installers?

Contact with knob and tube wiring is a significant electrical hazard that mitigation installers may face. Knob and tube wiring is an older type of electrical system that lacks the safety features found in modern wiring. It consists of insulated copper conductors that run through walls, often without grounding. This can pose several risks, including the potential for electrical shocks and fires if the wiring is damaged or improperly handled.

Mitigation installers must be aware of the presence of such outdated wiring as they work in residential settings to assess and remediate radon levels. Properly identifying and managing these risks is essential for ensuring the safety of both the installer and the home’s occupants. Recognizing and handling knob and tube wiring appropriately can prevent accidents and provide a safer working environment during radon mitigation activities.