What is the recommended practice for operators working with electrical equipment on antennas?

Maintaining insulation on tools is a crucial safety practice for operators working with electrical equipment on antennas. Insulated tools minimize the risk of electric shock when working near live wires or energized components. In the event that an operator accidentally makes contact with a live circuit, the insulation acts as a barrier to prevent electrical current from passing through the operator's body, thereby reducing the likelihood of serious injury or even fatal accidents.

This emphasis on using properly insulated tools is especially important in amateur radio operations, where antennas and other equipment may be installed at heights and can be exposed to various environmental conditions. Ensuring that tools are properly insulated contributes to a safer working environment and helps in preventing unintentional contact with electrical sources.

The other choices suggest practices that either don't contribute to safety or may even hinder it; for example, operating without safety equipment could lead to increased risk of accidents, while disconnecting power supplies regularly, although a good safety habit, is not specifically related to the use of tools, and working in daylight may not always be feasible or enhance safety without additional considerations.