| 摘要 |
A water heater has a housing, a heating element, and an electric power cord secured to the housing and to a three-pronged plug configured for insertion into a standard electrical power outlet. The power cord is continuous from the housing to the three-pronged plug. A portion of the housing has a diameter which is less than approximately one inch and is configured to extend through a drain plug opening in the tank for securing the housing to the tank. The plug has a diameter which is substantially equal to, or less than, the diameter of that portion of the housing.
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