Hot Water Heater Thermostat Wiring

The wiring connection for both single phase 120v and 240v are same i e.

Hot water heater thermostat wiring. It shows the elements of the circuit as simplified forms and also the power as well as signal connections between the tools. This is the common format for wiring an electric water heater but it is not the only. In the above diagram i shown that the upper water heater element is switched off and lower heater element is switch on. 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.

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. Understanding water heater wiring. Black color is neutral while red is phase or line and the yellow green wire is used for ground earth. A wiring diagram is a simplified standard pictorial representation of an electrical circuit.

An electric water heater has one or two thermostats depending on the gallon size of the tank. Most hot water heaters are on a 30 amp two pole breaker. The circuit wiring typically includes a 30 amp double pole breaker and 10 2 non metallic nm or mc cable. Electric water heaters require a 240 volt dedicated circuit which serves only the water heater and no other appliances or devices.

Wiring diagrams for actual wiring circuit of unit reference circuit type listed on rating plate. In most cases the limit switch and the thermostat share a plastic housing. At the water heater the black circuit wire connects to the black wire. The thermostats regulate the temperature of the water by turning off and on the heating elements.

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. Water heaters contain three basic electrical components. The two poles means it is a stated 240 volts or an actual 230 volts. Understanding electric water heater wiring.

Collection of wiring diagram for hot water heater thermostat. An electric water heater s wiring diagram enables someone to completely rewire a water heater even after removing all of the wires and parts. 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.