682 – Natural and Artificially Made Bodies of Water
682.15 – GFCI Rules Pertaining to Natural and Artificially Made Bodies of Water
Change at a Glance:
Revision organizes ground-fault protection to one location in Article 682. New provisions added for GFP (not exceeding 30 mA) for feeder and branch circuit conductors installed on piers.
682.15 Ground-Fault Circuit-Interrupter (GFCI) Protection. (Natural and Artificially Made Bodies of Water) Fifteen- and 20-ampere single-phase, 125-volt through 250-volt receptacles installed outdoors and in or on floating buildings or structures within the electrical datum plane area shall be provided with GFCI protection for personnel. The GFCI requirements in this article, unless otherwise noted, shall be in addition to the requirements in 210.8. Ground-fault protection shall be provided in accordance with 682.15(A) and (B). The GFCI protection device shall be located not less than 300 mm (12 in.) above the established electrical datum plane.
(A) Outlets. Outlets supplied by branch circuits not exceeding 150 volts to ground and All circuits rated not more than 60 amperes at 120 through 250 volts, single-phase, shall have be provided with GFCI ground-fault circuit-interrupter protection for personnel. [was 680.33(B)]
(B) Feeder and Branch Circuits on Piers. Feeder and branch-circuit conductors that are installed on piers shall be provided with ground-fault protection not exceeding 30 mA. Coordination with downstream ground-fault protection shall be permitted at the feeder overcurrent protective device.
Exception No. 1: Transformer secondary conductors of a separately derived ac system, operating at voltages exceeding 15 volts ac, 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.
Exception No. 2: Low-voltage circuits not requiring grounding, not exceeding the low-voltage contact limit as defined in 680.2, and supplied by listed transformers or power supplies that comply with 680.23(A) (2) shall be permitted to be installed without groundfault protection.
682.33(C) – Equipotential Planes and Bonding of Equipotential Planes
Change at a Glance:
Revision were made to 682.33(C) to more clearly details what needs to be bonded together and how to bond each part in order to properly construct an equipotential plane.
682.33 Equipotential Planes and Bonding of Equipotential Planes. (Natural and Artificially Made Bodies of Water) An equipotential plane shall be installed where required in this section to mitigate step and touch voltages at electrical equipment.
(A) Areas Requiring Equipotential Planes. (see NEC for complete text)
(B) Areas Not Requiring Equipotential Planes. (see NEC for complete text)
(C) Bonding
(1) Bonded Parts. Equipotential planes The parts specified in 682.33(C)(1) through (C)(3) shall be bonded together and to the electrical grounding system. The bonding conductor Bonding conductors shall be solid copper, insulated, covered or bare, and not smaller than 8 AWG. Connections shall be made by exothermic welding or by listed pressure connectors or clamps that are labeled as being suitable for the purpose and are of stainless steel, brass, copper, or copper alloy.
(2) Outdoor Service Equipment and Disconnects. Outdoor service equipment or disconnecting means that control equipment in or on water, that have a metallic enclosure and controls accessible to personnel, and that are likely to become energized shall be bonded to the equipotential plane.
(3) Walking Surfaces. Surfaces directly below the equipment specified in 682.33(C)(2) but not less than 900 mm (36 in.) in all directions from the equipment from which a person would be able to stand and come in contact with the equipment shall be bonded to the equipotential plane. Bonding to this surface shall be wire mesh or other conductive elements on, embedded in, or placed under the walk surface within 75 mm (3 in.).