When might a self-contained kettle require additional water?

A self-contained kettle requires additional water when there is a leak that allows steam to escape. This situation indicates a loss of water from the system, as steam represents water that has transitioned from liquid to vapor form. When steam escapes due to a leak, the water level drops, which can lead to insufficient water for proper operation. The kettle relies on having an adequate water supply to maintain temperature and pressure, which are critical for effective cooking and heating.

In cases where the kettle is operating normally, under initial setup conditions, or if it were truly self-sufficient, no additional water would be needed. Therefore, recognizing the effects of a leak is vital for maintaining the kettle's efficiency and functionality. Adequate water levels are essential for steam generation, and without it, the performance of the kettle can be compromised.