555 – Marinas, Boatyards, Floating Buildings, and Commercial and Non-commercial Docking Facilities

555.2 – New Definitions for Marinas, Boatyards, Floating Buildings, and Commercial and Noncommercial Docking Facilities

Change at a Glance:

New definitions were added to Article 555 for clarity as these terms were previously not defined. Several new definitions were extracted from NFPA 303-2016 (Fire Protection Standard for Marinas and Boatyards).

555.2 Definitions. (Marinas. Boatyards, Floating Buildings, and Commercial and Noncommercial Docking Facilities)

The definitions in this section shall apply only within this article.
Berth.
Boatyard.
Bulkhead.
Crane.
Docking
Facility
Electrical Datum Plane. (Previous definition at 555.2 moved to 682.2) (New definition for Electrical Datum Plane added to Article 100 and assigned to CMP-7)
Floating Building.
Marina 
Marine Marina Power Outlet. An enclosed assembly that can include equipment such as receptacles, circuit breakers, fused switches, fuses, a watt-hour meter(s), panelboards, and monitoring means approved identified for marine marina use. [303:3.3.13]
Monorail.
Mooring(s).
Shore Power.
Slip.
Storage, Dry Stack.
Wharf

(See NEC for complete definitions and Code text)

555.13 – Bonding of Non-Current-Carrying Metal Parts

Change at a Glance:

All metal parts in contact with the water, all metal piping, and all non-current-carrying metal parts that are likely to become energized are required to be connected to the grounding bus in the panelboard.

555.13 Bonding of Non-Current-Carrying Metal Parts. (Marinas. Boatyards, Floating Buildings, and Commercial and Noncommercial Docking Facilities)

All metal parts in contact with the water, all metal piping, and all non-current-carrying metal parts that are likely to become energized shall be connected to the grounding bus in the panelboard using solid copper conductors; insulated, covered, or bare; not smaller than 8 AWG. Connections to bonded parts shall be made in accordance with 250.8.

(This was 553.11 in the 2017 NEC.)

555.35 – GFPE and GFCI Protection in Marinas, Boatyards, Floating Buildings, and Commercial and Noncommercial Docking Facilities

Change at a Glance:

Ground-Fault Protection of Equipment (GFPE) and Ground- Fault Circuit-Interrupter (GFCI) Protection: GFP protection divided into three parts:

555.35 Ground-Fault Protection of Equipment (GFPE) and Ground-Fault Circuit-Interrupter (GFCI) Protection. (Marinas, Boatyards, Floating Buildings, and Commercial and Noncommercial Docking Facilities)

(A) Ground-Fault Protection. For other than floating buildings, ground-fault protection for docking facilities shall be provided in accordance with 555.35(A)(1) through (A)(3).
(1) Receptacles Providing Shore Power. Receptacles installed in accordance with 555.33(A) shall have individual GFPE set to open at currents not exceeding 30 milliamperes.
(2) GFCI Protection for Personnel. All 125-volt, single-phase, 15- and 20-ampere receptacles for other than shore power shall be protected in accordance with 555.33(B)(1) and (B)(2).
(3) Feeder and Branch-Circuit Conductors with GFPE. Feeder and branch-circuit conductors that are installed on docking facilities shall be provided with GFPE set to open at currents not exceeding 100 milliamperes. Coordination with downstream GFPE shall be permitted at the feeder overcurrent protective device.
Exception to (3): Transformer secondary conductors of a separately derived system that do not exceed 3 m (10 ft) and are installed in a raceway shall be permitted to be installed without ground-fault protection. This exception shall also apply to the supply terminals of the equipment supplied by the transformer secondary conductors.

(B) Leakage Current Measurement Device. Where more than three receptacles supply shore power to boats, a leakage current measurement device shall be available and be used to determine leakage current from each boat that will utilize shore power.
Informational Note No. 1: Leakage current measurement will provide the capability to determine when an individual boat has defective wiring or other problems contributing to hazardous voltage and current. The use of a test device will allow the facility operator to identify a boat that is creating problems. In some cases a single boat may cause an upstream GFPE device protecting a feeder to operate even though multiple boats are supplied from the same feeder. The use of a test device will help the facility operator prevent a particular boat from contributing to hazardous voltage and current in the marina area.
Informational Note No. 2: An annual test of each boat with the leakage current measurement device is a prudent step toward determining if a boat has defective wiring that may be contributing hazardous voltage and current. Where the leakage current measurement device reveals that a boat is contributing hazardous voltage and current, repairs should be made to the boat before it is permitted to utilize shore power.

Article 555 Part III – Floating Buildings

Change at a Glance:

The previous Article 553 (Floating Buildings) was incorporated into new Part III of Article 555.

Article 555 Part III. Floating Buildings (Marinas, Boatyards, Floating Buildings, and Commercial and Noncommercial Docking Facilities)

555.50 Service Conductors.
555.51 Feeder Conductors.
555.52 Installation of Services and Feeders.

(A) Flexibility

(B) Wiring Methods
555.53 Ground-Fault Protection.
555.54 Grounding.

(A) Grounding of Electrical and Nonelectrical Parts.

(B) Installation and Connection of Equipment Grounding Conductors.

(C) Identification of Equipment Grounding Conductors.

(D) Grounding Electrode Conductor Connection.
555.55 Insulated Neutral.
555.56 Equipment Grounding.

(A) Electrical Systems.

(B) Cord-Connected Appliances.