What type of hazards should be evaluated with portable cords before use?

Evaluating portable cords for external defects and possible internal damage is crucial for ensuring safety before use. Portable cords are often used in various environments and can be subject to wear and tear, exposure to moisture, chemicals, or physical stress. Inspecting them for external defects such as frayed insulation, exposed wires, or damaged connectors helps identify immediate safety risks that could lead to electrical shock or fire.

Additionally, potential internal damage may not always be visible from the outside but can occur due to frequent bending, kinking, or overloading. This internal damage can compromise the cord's integrity and safety. By assessing both external and potential internal conditions, users can mitigate risks and ensure that the cords are safe for operation.

Understanding these aspects is essential for maintaining safety standards in any environment where electrical equipment is used. The other options, while they might relate to safety or usage considerations, do not focus specifically on the critical evaluation of the cords themselves in the same direct manner as assessing defects and damage.