What safety measure is important when working with electrical installations?

Using a circuit tester to confirm that voltage is absent is a crucial safety measure when working with electrical installations. This practice helps ensure that the circuit is de-energized before beginning any work. By confirming the absence of voltage, a technician can greatly reduce the risk of electrical shock or injury while installing or repairing electrical systems.

Before working on any electrical circuit, it's important to check that it is safe to do so. Relying on intuition or prior knowledge without verifying the voltage status could lead to dangerous situations. Using a circuit tester is a straightforward and effective method to confirm that no electrical energy is present, helping to protect the technician and prevent accidents.

This safety practice aligns with industry standards and best practices in electrical work, emphasizing the importance of verifying the state of a circuit as a critical step in maintaining safety during electrical tasks.