When should you conduct an electrical test on all phases?

Conducting an electrical test on all phases before starting work is crucial for ensuring safety and operational reliability. This step is essential for verifying that the electrical system is functioning correctly and is free from faults that could pose risks during operation. By performing these tests before initiating any work, technicians can identify potential issues such as short circuits, imbalances, and insulation failures that, if left undetected, could lead to equipment damage or safety hazards.

Conducting tests at this stage allows for troubleshooting and rectification of any identified faults, ensuring that the equipment is in optimal condition before engaging in any operational activities. This preventive measure ultimately helps maintain the integrity of the system and safeguards personnel working with or around the equipment.

Although testing after initial setup, when equipment is idle, and at regular intervals are also important practices, the most critical moment to ensure safety and functionality is prior to any work commencing. This proactive approach helps to mitigate risks from the outset.