FAQ

Material taken from the National Electric Code

is reprinted with permission

from NFPA 70

, 2023 edition. National Electrical Code

NEC

Text

Material taken from the National Electric Code

is reprinted with permission

from NFPA 70

, 2023 edition. National Electrical Code

NEC

Text

and controls that are likely to become energized and are

accessible to personnel. The equipotential plane shall

encompass the area around the equipment and shall extend

from the area directly below the equipment out not less than

900 mm (36 in.) in all directions from which a person would

be able to stand and come in contact with the equipment.

(B) Areas Not Requiring Equipotential Planes.

Equipotential planes shall not be required for the controlled

utilization equipment on the docking facility or oating

building supplied by the service equipment or disconnecting

means.

Expert Analysis

A revision has been made to clarify that enhanced

safety will be achieved by requiring an equipotential

plane to mitigate step and touch voltages for electrical

equipment that supply power to equipment located at or

on docks. In addition, this section correlates with section

682.33 with the same title.

continued from page 94

New

555.15 Replacement of Electrical

Equipment at Marinas

Change Summary

• New article addresses requirements for modiﬁed

or replaced equipment at a docking facility.

They need to be Code compliant, and inspection

of the circuit is required by a qualiﬁed person.

Article 555 Marinas Boatyards, Floating Buildings, and

Commercial and Noncommercial Docking Facilities

555.15 Replacement of Equipment. When modications