Not sure if the belongs in plumbing or electrical but I will start here.
Electric water heater about 5-6 years old (based on manufacturing date), looks in good condition, was here when I bought the house about 4 years ago. Woke up to no hot water about 3 weeks ago, found reset on upper t-stat tripped. Reset and water heater worked. About a week later, same thing. No hot water & reset popped out. Bought a new upper T-stat and installed. This morning, no hot water, reset popped out. I have inspected all the wire connections at the upper and lower t-stats, the disconnect and the supply circuit breaker. No signs of any loose connections or arching. Measured the resistance of the upper and lower elements with the wires disconnected. Lower element about 14 ohms and the upper about 9 ohms. I have drained the sediment on a regular basis so there is no build up in the tank. Can the upper element be bad and be drawing too much current or do I have a different problem? Any other ideas would be appreciated.
Electric water heater about 5-6 years old (based on manufacturing date), looks in good condition, was here when I bought the house about 4 years ago. Woke up to no hot water about 3 weeks ago, found reset on upper t-stat tripped. Reset and water heater worked. About a week later, same thing. No hot water & reset popped out. Bought a new upper T-stat and installed. This morning, no hot water, reset popped out. I have inspected all the wire connections at the upper and lower t-stats, the disconnect and the supply circuit breaker. No signs of any loose connections or arching. Measured the resistance of the upper and lower elements with the wires disconnected. Lower element about 14 ohms and the upper about 9 ohms. I have drained the sediment on a regular basis so there is no build up in the tank. Can the upper element be bad and be drawing too much current or do I have a different problem? Any other ideas would be appreciated.