Where can you find federal law regarding the testing of lines for the absence of nominal voltage?

The correct choice pertains to OSHA 29 CFR 1910.269, which specifically addresses the safety regulations concerning electrical power generation, transmission, and distribution. This section outlines various requirements, including the necessity for testing lines to ensure they do not carry any nominal voltage, thus ensuring worker safety during maintenance and operational tasks.

This particular regulation emphasizes the importance of safety protocols when working with electrically energized equipment and mandates that all lines be tested for voltage in a manner that protects employees from electrical hazards. By including guidelines on how to safely perform such testing, this section helps ensure that workers are appropriately trained and equipped to identify and mitigate potential hazards associated with electrical lines. Understanding these standards is crucial for any professionals working in or around high voltage environments to uphold safety and compliance in their operations.

The other options relate to different aspects of workplace safety and regulations but do not specifically focus on the testing of lines for voltage absence in the context of electrical utilities, making them less relevant to the question at hand.