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Straight-blade receptacles — like those in your home — are increasingly less common as marina outlets, and for good reason. Water and electricity are a potentially lethal combination, and straight blade receptacles have no provision for preventing rain or washdown water from reaching the contacts.

Even if shorepower demands can be met with a 15-amp service, you should still equip your boat with a 30-amp inlet fitting to allow the use of a shorepower cord with waterproof plugs. In addition to the safety benefit, you will find that because the 30-amp locking receptacle has become the norm at most U.S. and Caribbean marinas, a 30-amp inlet on your boat will minimize or eliminate altogether your need for adapters.

Don Casey

Contributor, BoatUS Magazine