Where should the water supply be located in relation to the pump for effective priming?

For effective priming of a pump, the water supply should be located above the pump. This positioning takes advantage of gravity to help fill the pump casing with water. When the water supply is above the pump, it allows for a natural gravitational flow into the pump, which facilitates the initial filling necessary for the pump to operate properly.

In contrast, when the water supply is at the same level as the pump or below it, the pump may struggle to create the necessary vacuum to draw water into itself, which can result in priming difficulties. A pump needs to be filled with liquid to function, and having the source above assists in ensuring that the liquid can flow freely into the pump without needing to rely solely on the pump's suction capabilities. Proper priming is crucial for the pump's efficiency and effectiveness in moving water.