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Free Mike Holt Publication – Marinas and Boatyards, Article 555 – 2014 NEC  

 
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This PDF is a free resource from Mike Holt Enterprises. It is always our pleasure to give back to the industry as much as we can whenever we can. For this reason we are sharing this publication with you.

 

Marinas and Boatyards, Article 555 is extracted from Mike Holt’s Illustrated Guide to Understanding the NEC, Volume 2.

Water levels aren’t constant. Ocean tides rise and fall, while lakes and rivers vary in depth in response to rain. To provide power to a marina or boatyard, you must allow for these variations in water level between the point of use and the power source. Article 555 addresses this issue.

This article begins with the concept of the electrical datum plane. You might think of it as the border of a “demilitarized zone” for electrical equipment. Or, you can think of it as a line that marks the beginning of a “no man’s land” where you simply don’t place electrical equipment. Once you determine where this plane is, don’t locate transformers, connections, or receptacles below that line.

 

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Comments
  • 555.19-4 (b).. 60 and 100 amp receptacles .. pin and sleeve type, ADD Conforming g to IEC 60309. There are currently several types of pin and sleeve receptacles and plugs,(e.g. Crouse-Hinds, Appleton, Russell-Stoll, etc, none of which are interchangeable. IEC60309 is available most anywhere and it is internationally accepted.

    Jim Green   September 25 2015, 12:17 am EDT

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