Hot Water Heater Thermostat Wiring

At the water heater the black circuit wire connects to the black wire.

Hot water heater thermostat wiring.

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. 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. The water heater element is connected to the thermostat via t 2 as hot and l 4 as neutral.

Water heaters contain three basic electrical components. Wiring diagrams for actual wiring circuit of unit reference circuit type listed on rating plate. The two poles means it is a stated 240 volts or an actual 230 volts. As long as your water heater is not too far from the panel it will be wired with 10 wire.

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. Elements thermostats and a high temperature limit switch. This is the common format for wiring an electric water heater but it is not the only.

The thermostats regulate the temperature of the water by turning off and on the heating elements. An electric water heater has one or two thermostats depending on the gallon size of the tank. An electric hot water heater has two thermostats controlling two separate heating elements one in the upper half of the tank one in the lower half. In most cases the limit switch and the thermostat share a plastic housing.

Most hot water heaters are on a 30 amp two pole breaker. In the above diagram i shown that the upper water heater element is switched off and lower heater element is switch on. Black color is neutral while red is phase or line and the yellow green wire is used for ground earth. Understanding water heater wiring.

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 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. 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.