Maintenance Technician Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

The recommended first step before repairing electrical systems is to disconnect power. This is critical for safety, as working on live electrical components poses a significant risk of electrical shock or electrocution. When power is disconnected, technicians can work on the system without the immediate danger of receiving an electric shock, allowing for a safer and more controlled working environment.

Taking this precaution protects not only the technician but also ensures that the electrical system won't accidentally energize during the repair process. Disconnecting power is considered a standard best practice in electrical maintenance and repair, as it mitigates risks associated with handling electrical components.

While wearing insulated gloves, calling a supervisor, and testing electrical components are important safety practices and procedures in the maintenance of electrical systems, they should be performed only after the power has been successfully disconnected to ensure safety and minimize risks.