How to Wire Water Heater

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This may help figure out what wires do what. There are three lugs on the heater, L1, L2, and L3.

That's a lot of electricity or roughly 416 hours of running a tank unit at 8kw while not using it. That's a ten year payback period.

Baseboard Heater

How to Wire a Water Heater The first step in how to wire a water heater is to make sure you have proper electrical power to the water heater. Electric hot water heaters typically require a dedicated 30-amp, 240-volt breaker. Since a water heater has no outlet, the cable will be run from the wall to the junction box on the water heater. Note: Do not fill up the tank with water until the water heater is wired up and then, do not turn on the circuit until the tank is filled with water. There have been many cases of folks who do not know how to wire a water heater apply power to the tank without water, the electric element quickly over-heats and opens up, and then they are trying to figure out what they did wrong. If you are changing to electric from a gas unit, you will need to wire a dedicated 30-amp circuit and 12-2 Romex to the site of your water heater. Inside you should see two lead wires and a ground screw. Do not let the flex conduit come in contact with the water pipes. Doing so can transfer heat from the hot water pipe wiring 240v heater your conduit - wires do not like that extra heat. Next, take the black wire from the feed circuit and one wire from the water heater it doesn't matter which wire and twist them together. With the white feed wire coming from the panel, wrap electrical tape over its insulation to identify it as a current-carrying line the same should be done at the breaker panel as well where the white wire ties into the second hot pole of the 240V breaker rather than the neutral bus. Once it's marked, connect the white wire to the other wire in the water heater just as you did the black wire. Note: Since the hot water heater is a 240-V appliance, it does not require a wiring 240v heater wire. Thus, the white wire is actually a hot line in this application. Turn on the water supply and fill the tank with water. Once fully filled with water, turn the circuit breaker back on. Without water in the tank when you turn it on, the heater element can quickly overheat and be damaged.

In fact it's so easy you can do it yourself. This is a maximum of 14 and 19 feet of 240 volt, standard density heat, respectively. In this case you don't need the white but it does not hurt to still make sure it's connected to the neutral bus bar at the panel while you're in there, but you don't have to. Below is a do-it-yourself guide designed to help simplify the process. Technical Information Baseboard heaters work best when placed under a window and at least 12 inches away from furniture or other objects. If the wall thermostat does control those wires, you will probably get more even room temperature if you use the wall thermostat to control the heater and leave the heater's built in thermostat somewhat above the desired room temperature. It was his hunting cabin that he improved to get his wife to live here.