Which factor is key in determining the safety of electrical systems in a home?

The key factor in determining the safety of electrical systems in a home is the wiring quality and compliance with codes. Proper wiring practices ensure that electrical systems can handle the required load, minimize the risk of overheating, and prevent potential electrical fires. Electrical codes are established standards that govern the installation and maintenance of electrical systems to ensure safety and reduce hazards.

If wiring is of poor quality or not installed according to code, it can lead to various safety issues, including short circuits, exposed wiring, and overloaded circuits, all of which pose risks of shock or fire. Therefore, adhering to regulations and ensuring high-quality materials in wiring and installations is essential for creating a safe electrical environment in any home.