What is the primary danger of using a water extinguisher on an electrical fire?

Using a water extinguisher on an electrical fire poses a significant risk of electrocution to the user because water is a good conductor of electricity. When water is applied to live electrical equipment or wiring, it can create a pathway for electrical current to travel through, potentially shocking anyone who is using the extinguisher or nearby. This hazard is why water extinguishers are not suitable for electrical fires and why other types, such as CO2 or dry chemical extinguishers, are recommended instead. It's crucial for individuals to understand the properties of different extinguishers and their appropriate applications to ensure safety during firefighting efforts.