Hot Water Heater Thermostat Wiring

Understanding water heater wiring.

Hot water heater thermostat wiring.

In the above diagram i shown that the upper water heater element is switched off and lower heater element is switch on. It shows the elements of the circuit as simplified forms and also the power as well as signal connections between the tools. Usually when the upper thermostat goes bad you will have no hot water at all while a bad lower thermostat makes itself known when there is only a small amount of hot water before the tap water goes cold. The line is connected to the l 1 terminal while neutral or second line is connected to the l 3 terminal.

The thermostats regulate the temperature of the water by turning off and on the heating elements. Elements thermostats and a high temperature limit switch. Understanding electric water heater wiring. Wiring diagrams residential electric water heaters current production 315267 000 time clock switch operates bottom element only to power supply to time clock switch off peak meter operates.

An electric water heater has one or two thermostats depending on the gallon size of the tank. A wiring diagram is a simplified standard pictorial representation of an electrical circuit. As long as your water heater is not too far from the panel it will be wired with 10 wire. Black color is neutral while red is phase or line and the yellow green wire is used for ground earth.

Most hot water heaters are on a 30 amp two pole breaker. Water heaters contain three basic electrical components. This is the common format for wiring an electric water heater but it is not the only. In most cases the limit switch and the thermostat share a plastic housing.

The wiring connection for both single phase 120v and 240v are same i e. Wiring diagrams for actual wiring circuit of unit reference circuit type listed on rating plate. 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. The water heater element is connected to the thermostat via t 2 as hot and l 4 as neutral.

At the water heater the black circuit wire connects to the black wire. The two poles means it is a stated 240 volts or an actual 230 volts. Collection of wiring diagram for hot water heater thermostat. The circuit wiring typically includes a 30 amp double pole breaker and 10 2 non metallic nm or mc cable.