Final answer:
The sanitizing cycle of hot water dishwashers should reach 82°C (180°F) to effectively kill most microbes and ensure the dishes are sanitized.
Step-by-step explanation:
The temperature at which hot water sanitizing dishwashers should be during the sanitizing cycle is 82°C (180°F). This high temperature is sufficient to kill most microbes, thus sanitizing the dishes effectively. The requirements are typically established to ensure that dishes are effectively cleaned and sanitized to promote public health, and this standard is in line with the temperature needed to kill bacteria as seen in food safety practices which use high temperatures, often at or above 74°C (165°F), to kill bacteria.