Hot water tanks
Amps = Watts/Voltage. 4500/240 = 18 amps. You would use a #12 copper wire which is rated at 20 amps. On a hot water tank there is only one of the elements on at a time. The incoming cold water is taken to the bottom of the tank through a pipe inside the tank. When the lower thermostat senses the cold water, the lower element turns on. As you draw hot water from the top of the tank the cooler water from the bottom will rise. When the top thermostat senses the cool water it shuts off the bottom element and turns on the top element. When this water is heated to the tank set point it shuts off and the lower element turns on to heat the rest of the water. When the total tank temperature is at the set point all elements turn off. By using this type of procedure there is always hot water at the top of the tank for use.
When should the second heating element kick on
In North America 240 volts.
Domestic coil in boiler better than electric water heater.
An electric water heater in a hot tank is called an immersion heater and many of those run at 3 kW with a thermostat to control the max temperature. Power showers use a type of water heater that heats the water at the point where it is used, without a tank. They run at 6-8 kW and are also controlled by a thermostat.
Rheem
The average size water tank is 4500 watts. The generator's supply will be large enough to operate the water tank. Larger tanks over 5000 watts will not heat correctly.
If electric, the elements will blow very quickly.
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If it is a electric water heater, then one of the heating elements are burned out.
Gas heater & electric heater both are available.
In North America 240 volts.
There are usually 2 on a domestic electric heater, one about a foot from the top and the other near the bottom, both attached to the elements.
If its an electric water heater normally around the elements, Gas at a weld or relief valve.
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Domestic coil in boiler better than electric water heater.
The electric heating elements within the tank must remain immersed in water. If the power is not disconnected before draining the tank, the elements will get too hot and will burn out. if the tank is sitting idle but remains full of water, then they should not burn out.
yes, the breaker just controls the heating elements
Only if you leave the burners or elements on. -If water stops, close gas line or switch off breaker for tank.