In the following water heater wiring diagram, a 3000 Watts single heating element is shown connected to 120V AC as well as 240V AC. The same thermostat can be wired for both 120V AC (Line and Neutral) and 240V AC (two lines or phase wires). So the nearest 30A breaker can be used.Ģ40V & 120V AC Single Phase Single Element Thermostat Wiring Connection In other words, the circuit breaker should be rated about 125% of full load current i.e. The safe maximum current of the circuit breaker is 80% i.e. This way, a 30A circuit breaker and 8 gauge wire for both line and neutral is suitable according to the rating. Since the supply voltage is 120V, hence it draws the maximum of 25 amperes current (Ohm’s law: I = P/V). The rating of the water heater element is 3kW. The earth or ground “G” is connected to the junction box of the water heater. On the other hand, the neutral (N) is directly connected to the second terminal of the heating element. In this wiring connection, the phase line (L) from 120V/240V main panel (SP breaker) is connected to the L 1 screw on the thermostat and then leaving the T 2 terminal which is further connected to the single heating element. 120V AC Single Phase Single Element Water Heater Thermostat Wiring Let’s see different wiring diagrams for single element water heater thermostats as follows. Related Heater Wiring: How to Wire 120V Simultaneous Water Heater Thermostat?.In other words, there are two screws on the right side in a single element thermostat switch which is fixed to the heating element while a dual element thermostat has 3 screws on the right side. The thermostat used in a single element electric water heater is different from the double (dual) element water heater. Related Heater Wiring: How to Wire 120V Water Heater Thermostat – Non-Simultaneous?.In the first basic tutorial, we will be showing how to wire and install a single element water heater and thermostat for 120V AC single phase (US), 230V AC single phase (EU/UK) and 240V AC two lines US. In this series, we will be showing how to wire different water heaters and thermostats like, single phase water heater, three phase water heater (balanced and unbalanced), continuous and non-continues (simultaneous and non-simultaneous) water heater installation, thermostats wiring diagram with switches and breaker rating. Well, we are not telling a love story here but want to show how to manage the hot water by wiring the hot water geyser and electric water heater wiring installation tutorial. If this is not the case for you (don’t tell a lie), I prefer speaking the truth “I Love Hot Water Too Much in the Cold and Snowy Weather”. In the shivery and freezing to the bone season, we need hot water instead of her/him. Single Element Water Heater Thermostat Wiring Diagram
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