Which combination of causes accounted for the most residential fires in 2019?

The combination of causes that accounted for the most residential fires in 2019 is attributed to faulty electrical systems and suspicious activity. Faulty electrical wiring, devices, or appliances have historically been a significant cause of residential fires, as they can lead to overheating and ignition of surrounding materials. Additionally, fires started from suspicious activity, which may include intentional fires, contribute to the overall risk within residential areas.

It's important to recognize that while smoking and candles are commonly cited fire hazards, the data for the year 2019 indicated that electrical issues and potentially intentional acts led to a higher incidence of residential fires. Understanding this relationship between these specific causes emphasizes the importance of addressing electrical safety and fire prevention measures in residential settings.