What tool must be used when energizing or de-energizing large capacitors?

When energizing or de-energizing large capacitors, a load break tool is essential. This tool is specifically designed to safely switch large loads on and off, allowing an operator to connect or disconnect capacitors from the power supply without risking an arc or fault condition.

Using a load break tool allows for controlled operation under live conditions, which is crucial given that large capacitors can store significant electrical energy and may present serious safety hazards if not handled correctly. A load break tool typically includes features that help manage the high voltages and currents associated with capacitors, ensuring that the operation can be performed without exposing the worker to dangerous situations.

In contrast, an insulation tester is used primarily to check the integrity of insulation systems, a voltage meter measures the electrical potential difference, and a grounding stick is used for creating a ground connection to ensure safety from electrical hazards. While these tools serve important purposes, they do not offer the specific functionality required for the safe operation of large capacitors during energizing or de-energizing.