How do you hook up a hot water heater?

2:025:11Electric Water Heater Installation - YouTubeYouTubeStart of suggested clipEnd of suggested clipHooking up the water is easy with a flexible hose kit and its recommended for earthquake. SafetyMoreHooking up the water is easy with a flexible hose kit and its recommended for earthquake. Safety apply plumbers tape on the threads of the heat trap nipples.

Why do you have to bond the neutral and the ground wire in the main panel?

Commonly the neutral is grounded (earthed) through a bond between the neutral bar and the earth bar. The connection between neutral and earth allows any phase-to-earth fault to develop enough current flow to trip the circuit overcurrent protection device.