When is it essential to perform insulation resistance testing?

Performing insulation resistance testing is essential as part of routine maintenance and before energizing circuits to ensure the safety and functionality of electrical installations. This testing helps identify any potential faults in the insulation that could lead to short circuits or electric shocks if the system is powered up without proper checks.

When circuits are installed or upgraded, they may experience wear and environmental factors that can degrade insulation over time. Routine testing helps in detecting issues such as moisture ingress, physical damage, or degradation of insulating materials, allowing for corrective actions to be taken before the system is energized.

In essence, this practice not only adheres to safety regulations but also protects the integrity of electrical installations, ensuring that they operate efficiently and safely without risking equipment damage or personal safety.