I did a service call today at a hair salon and found the breaker disconnect at the water heater was burnt up. The line side terminals and about three inches of the line side wiring to the breaker were toast. The owner needed hot water and it was too late in the day to get a new disconnect, so I bypassed the disconnect with 10-2 romex to get her hot water. The feed was romex and was being fed from a 200amp panel and 30a breaker about 50ft away. I will return tomorrow with new disconnect. My question is: After re-energizing the circuit, I Put an amp meter across each leg and it was pulling 33.9 amps. I checked the voltage and it was 239v. I then looked for a sticker on the water heater and found it had been torn away or fell off. I opened the access panels to the elements and found both elements were energized at the same time. The upper element was 3500w and the lower was too difficult to see. After about 20min. the amperage dropped to 19.2amps and then 10min. later dropped to zero. This water heater apeared to be about 40gal, just your typical house style water heater and about 5-7 yrs old. The owner said the water heater was a quick recovery type. I've never seen a water heater that both elements are energized at the same time and I'm concerned about the amp draw. Is this normal for a quick recovery water heater?? or is there something else with the t-stats going on??