How to Wire Single Element Water Heater and Thermostat?

The wiring connection for both single phase 120V and 240V are same i.e. the Line is connected to the L 1 terminal while neutral or second line is connected to the L 3 terminal. The water heater element is connected to the thermostat via T 2 as hot and L 4 as neutral. Black color is “Neutral” while red is “Phase or Line” and the yellow/green wire is used for ground / earth.

In the above diagram i shown that the upper water heater element is switched OFF and lower heater element is switch ON. Note that these element is 220 volts ratings and you can also 440 volts heater elements but you need to provide the line supply, my mean to lines or two hot wires supply 440 volts.

Part of the series: Water Heaters. When reconnecting the wires to a heating element, it is very important that you do so in all the right spots. Reconnect the wires to a heating element with help ...

But your electric water heater wiring may differ in that it may have only one heating element, or the two-element heater may operate the heaters individually (non-simultaneous), or your unit could be a 120V heater (less common at residential buildings) or even a three-phase installation (more likely at larger heaters and commercial installations).

Assortment of wiring diagram for hot water heater element. A wiring diagram is a simplified conventional photographic representation of an electrical circuit. It shows the elements of the circuit as streamlined shapes, and the power and also signal links in between the devices.

An electric water heater's wiring diagram enables someone to completely rewire a water heater even after removing all of the wires and parts. Water heaters contain three basic electrical components: elements, thermostats and a high-temperature limit switch.

In an electric water heater, the bottom heating element is the workhorse, since it is at the bottom of the tank where cold water enters from a dip tube that extends down through the tank. The upper heating element really only contributes when there is a high hot water demand and only serves to heat water in the upper portion of the tank.

The heating elements, and the thermostats that control them, are contained inside access panels mounted on the side of the water heater tank. Each pair of thermostats and heating elements has screw terminals that are connected to wire leads in the water heater.

Electric water heaters are a relatively recent alternative to the traditional gas-powered heater design. Whereas gas heaters heat water with a burner that produces a flame, electric heaters instead use electricity to heat an element. Manufacturers make electric heaters with either one or two elements.

Hi-Tech Elements design, manufacture and supply a diverse range of electric heating elements, heating systems and related product as well as temperature measurement sensors and temperature control systems to virtually any manufacturing industry on the African continent and internationally.