In a recent visit to Marco Island, FL with my family we stayed at a beautiful 4 bedroom house. In the garage was this 30 gallon electric water heater. FWIW, with 9 people taking showers the water temp. recovery time is terrible. Anyway, I had to take this photo because every other electrical thing in the house was done with the utmost care and craftsmanship. I found it odd that this was installed in this manner. It looks like the installer went to HD, bought a heavy duty 30A power cord, cut the female end off, peeled back the ground wire and attached it to the ground screw on the outside of the wiring compartment. There are 2 120V single receptacles to the right for a washer and dryer. You need a ladder to access any of these receptacles. BTW, the breaker panel is about 15' to the right.