What is the primary purpose of discharging a capacitor before testing?

The primary purpose of discharging a capacitor before testing is to protect the technician from shock. Capacitors can store a significant amount of electrical energy, and if a technician accidentally comes into contact with a charged capacitor, it can lead to electrical shock, which can be dangerous or even life-threatening. By discharging the capacitor, the technician ensures that there is no stored energy that could pose a risk during testing or servicing, thereby creating a safer working environment.

While other aspects, such as ensuring accurate readings and preventing capacitor damage, are important considerations, the foremost concern when working with capacitors is safety. Capacitors need to be handled with caution, and discharging them properly is a critical practice in preventing accidental electrical shocks.