Final answer:
The temporary connection of plumbing equipment for testing ensures systems work correctly before permanent installation. It allows checking the various types of power involved in fluid flow and the associated energy transformations.
Step-by-step explanation:
The phrase 'Temporary connection of the plumbing equipment to the source of energy or fuel for the purpose of testing' refers to conducting checks on plumbing fixtures and systems by connecting them to their respective power sources without making a permanent installation. This is done to ensure the systems are functioning correctly before finalizing the setup. In terms of power, which is the rate of energy transferred or denoted by the formula E/t, it is crucial to test the plumbing equipment to ensure that the fluid flow and associated types of power are satisfactory and safe. Various types of power can be involved in fluid flow, each correlating to a different form of energy being used or transformed. For instance, mechanical power in pumps, electrical power in heaters, and so on are tested during these temporary connections to guarantee the equipment's reliability under operational conditions.