I have a second floor apartment built in about 1972. Recently there was a water leak into one corner of the kitchen from the next floor above. In the opposite corner is my dishwasher, which is hardwired. The water saturated the floor underneath the leak and spread several feet out, requiring that the kitchen flooring will need to be replaced. The leak was repaired several days ago and the flooring is drying out. The dishwasher has stopped working. No lights showing on panel. I have pulled the d/w out and tested the wiring to the unit with a non-contact tester (tester is verified working correctly), which shows no electricity coming to the dishwasher. No other electrical problems anywhere in the apartment. The circuit breaker panel is probably the original, possibly part of an update, but is pretty old. The c/b switch which is labeled for the d/w is a 20amp. I did not do the labeling, but over time have checked them all and feel fairly sure it is the correct switch. In any case no c/b switches were tripped. JIC, I reset them all. Still no power to the d/w. The circuit breaker panel is on a wall several feet away from the kitchen but closer to the d/w than the corner where the leak occurred. It seems to me unlikely that the leak could be responsible for shorting the c/b switch, but thought I should ask the experts? Any thoughts on this? I am guessing that (very coincidentally) the c/b switch failed at the same time as the leak, although the co-incidence factor seems a bit unlikely. Even if caused by the leak, since there is now no power in that circuit, the c/b switch is now suspect. How do I safely test the c/b switch?