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Significant Proposals for 2005 NEC Part XIV

As Reviewed by Mike Holt

The following text is a quick summary of the proposed changes for the 2005 NEC. This document is a work in progress and many will be changed by the Code panel over the next few months. Some of these you might find important to your work and you might want to follow their progress with me. Therefore, each week I will email you a few of these changes.

Each proposed change has a Report on Proposal (ROP) number, like 1-25. This number reflects the Proposal Number and all action on this proposal can be viewed in the following PDF document NECPart 4.

As always, I am looking to improve our products, so if you feel you have anything to contribute, please let me know at Mike@MikeHolt.com.


Article 680 Swimming Pools, Fountains, and Similar Installations

I. General

17-61
680.8 Overhead Conductor Clearances.
New text clarifies how to determine the minimum overhead conductor clearances for pools, spa's, and hot tubs, and fountains, as it relates to the maximum water level of the specified body of water.

17-64
680.10 Underground Wiring Location.
Section revised to permit jacketed Type MC, under specific conditions, for direct burial underground within 5 ft from a pool.

Author's Comment: Jacketed Type MC cable listed for direct burial has a metallic armor with an outer nonmetallic jacket and that provides suitable mechanical protection for the proposed application.

17-71
680.12 Maintenance Disconnecting Means.
Rule revised to clarify what the maintenance disconnecting means is required to disconnect and what it is not required to disconnect.

17-71
680.12 Maintenance Disconnecting Means.
The text was revised to identify when the pool equipment maintenance disconnect is required to be "readily accessible," as well within sight of the pool equipment.

Author's Comment: The 2002 NEC only required the pool disconnect to be "accessible," as well as within sight of the pool equipment.

II. Permanently Installed Pools

17-73
680.21 Motors.
(A) Wiring Methods.
(1) General. To provide protection during the installation, the rule was revised to identify when the copper equipment grounding (bonding) conductor for motors is required to be insulated.

Author's Comment:
UF cable with an uninsulated equipment grounding (bonding) conductor for pool pump motors is no longer permitted, except for dwelling units [680.22(A)(4)] and double insulated motors [680.22(A)(5)].

17-85
680.22 Area Lighting, Receptacles, and Equipment.
(A) Receptacles.
(5) GFCI Protection. Clarify that GFCI protection is required for receptacles that supply pool pump motors rated 15A or 20A, 125V through 250V, single phase.

Author's Comment: The 2002 NEC required GFCI protection for receptacle rated 120V through 240V. Since receptacles are rated 125V, 208V, and 250V, this caused a problem in the application of this GFCI protection requirement.

17-90
680.23 Underwater Luminaires.
(B) Wet-Niche Luminaires (Fixtures).
(2) Wiring Extending Directly to the Forming Shell. Change the term "equipment grounding conductor" to "bonding jumper" for the 8 AWG conductor installed within a nonmetallic conduit that extends directly to the forming shell.

Author's Comment: The change clarifies that the 8 AWG bonding conductor is to create an equipotential stray voltage plane to reducing touch voltage.

17-98
680.23 Underwater Luminaires.
(B) Wet-Niche Luminaires (Fixtures).
(6) Servicing. New rule requires wet-niche luminaries to be installed in so that the water level is not required to be reduced to relamp or perform normal maintenance on the wet-niche luminaire.

17-100
680.23 Underwater Luminaires.
(F) Branch-Circuit Wiring.
(1) Wiring Methods. Section revise to permit jacketed Type MC on the supply side of enclosures and junction boxes connected to conduits that run to wet-niche luminaires.

17-108
680.25 Feeders.
(A) Wiring Methods. Liquidtight flexible metal conduit, flexible metal conduit, and Type MC cable were added as suitable wiring methods for feeders, because they provide sufficient physical protection.

17-110, 17-111, and 17-112
680.25 Feeders.
(B) Grounding (Bonding).
(2) Separate Buildings or Structures. New text clarifies that when a feeder is run to a separate building or structure to supply swimming pool branch circuits, a separate equipment grounding (bonding) conductor must be run with the feeder conductors, and this conductor must be insulated.

17-115
680.26 Equipotential Bonding.
Add the term "Equipotential Bonding" to this section to clarify that the purpose is to reduce touch stray voltage, not to clear a ground fault.

17-120
680.26 Equipotential Bonding.
(B) Bonded Parts.
(6) Pool Water. New requirement specifies when the pool water must be effectively bonded and how this is to be accomplished.

Author's Comment: The purpose of bonding the pool water is to reduce the potential difference in stray voltage between the pool water and bonded components in and near the pool.

17-121
680.26 Equipotential Bonding.
(C) Equipotential Bonding Grid. Add the term "Equipotential Bonding" to clarify the purpose is to reduce touch stray voltage, not to clear a ground fault.

17-122
680.26 Equipotential Bonding.
(C) Equipotential Bonding Grid. New FPN alerts the Code user that a bonding grid under nonreinforced concrete or other nonconductive decking in direct contact with the earth will provide additional safety.

Author's Comment: This is a good practice (I added it to my home) to install an equipotential stray voltage bonding grid in fiber-mesh type concrete located under and near metal parts that have been bonded to the equipotential boding grid. This equipotential stray voltage grid helps mask the ever-increasing stray voltage values often resulting from deteriorating primary utility neutral conductors.

17-124
680.27 Alternate Voltage Gradient Suppression System.
If nonconductive rebar is used for structural reinforcing steel of a concrete pool, an alternative stray voltage gradient suppression system is required to reduce the potential between the pool water and bonded components in and near the pool. This new requirements includes details for:
(1) Material and Connections.
(2) Containment Structure Rings.
(3) Deck Rings.
(4) Ring Spacing Tolerance.
(5) Ring-bond Conductors.
(6) Securing.

III. Storable Pools

17-132a
680.32 Ground-Fault Circuit Interrupters Required.
The GFCI protection requirements for 125V receptacles located within 20 ft of the inside walls of a storable pool, that were inadvertently left out during the re-write of Article 680 for the 2002 NEC, were added back.

17-132b
680.34 Receptacle Locations.
The location requirements for receptacles for storable pool pump motors or other loads directly related to the circulation and sanitation system, that were inadvertently left out during the re-write of Article 680 for the 2002 NEC, were added back.

V. Fountains

17-148
680.57 Signs.
(A) General. This section was revised to clarify that the requirements of this section only applies to signs installed within a fountain or within 10 ft of the fountain edge.

17-150
680.58 GFCI Protection for Adjacent Receptacle Outlets.
The GFCI protection requirement for 15A or 20A receptacles within 20 ft of fountains was relocated to this section from 680.22(A)(5).


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