I have a brand new Whirlpool electric water heater, wired on 9-3-2013. One of the two 15 amp breakers trips after 7 minutes of operation. Internal temperature reset does not trip. I checked connections, wires, elements (ohms), checked voltage, brand new 15 amp breakers, voltage reading on each phase is at 123 volts. It is well grounded as required.
By Dinky
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Possibly the water heater itself is faulty. Call the manufacturer they may have answers. Hope this helps.
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