This is the back of a SmartPlug 30A inlet. This is the original style plug which has now been updated, and further enhanced for ease of installation, but the basics are the same.
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In order to wire the AC shore inlet you will need to first remove the rear cover plate. This is a simple one screw deal. Once the plate is removed the inlet can be wired.


This new SmartPlug 30A inlet is purposely designed to use the same mounting & hole pattern as the twist-lock standard 30A marine inlet. It will fit the old location regardless of whether the original inlet was plastic or metal. This makes installation SIMPLE!