Which testing method is typically used to ensure the safety of an installation before energizing?

Dead testing is the method typically employed to ensure the safety of an electrical installation before energizing it. This approach involves checking the integrity and functionality of the wiring and equipment while the system is de-energized. During dead testing, technicians can safely inspect insulation resistance, conduct continuity tests, and verify the absence of voltage without the risks associated with live electrical circuits.

Using dead testing establishes a clear understanding of the installation's condition and helps identify any potential issues that could pose safety hazards once the system is energized. This method is crucial in confirming that the installation meets safety standards and is free from faults, ensuring a safer environment for subsequent energizing and operation.

In contrast, live testing is conducted while the system is energized and involves different safety considerations and protocols. Functional testing assesses how the system operates under load but does not confirm safety prior to energization. Load testing is specifically concerned with measuring the performance of electrical equipment under load conditions and does not address safety verification before energizing.