I replaced a water heater yesterday in a rental trailer for a friend of mine. It is an older 1980s trailer, and has the water heater sealed in a closet that opens to the outside, behind a siding panel. It had apparently been leaking for some time. The recessed area on top that held the electrical connections was full of water! Why didn't that trip a breaker? Are wire nuts waterproof? Do you think that touching that water would have shocked someone? I don't understand how wiring can work underwater.
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