Article 680 Swimming Pools, Fountains, and Similar Installations
Cord-and-Plug-Connected Lighting Assembly. A lighting assembly consisting of a luminaire intended for installation in the wall of a spa, hot tub, or storable pool, and a cord-and-plug-connected transformer.
Corrosive Environment. Areas where pool sanitation chemicals are stored, handled, or dispensed, and confined areas under decks adjacent to such areas, as well as areas with circulation pumps, automatic chlorinators, filters, open areas under decks adjacent to or abutting the pool structure, and similar locations.
Informational Note: Sanitation chemicals and pool water are considered to pose a risk of corrosion (gradually damage or destroy materials) due to the presence of oxidizers (e.g., calcium hypochlorite, sodium hypochlorite, bromine, chlorinated isocyanurates) and chlorinating agents that release chlorine when dissolved in water. More information about swimming pool chemicals can be found on or in the following:
- Environmental Protection Agency website
- NFPA 400-2019, Hazardous Materials Code
- Advisory: Swimming Pool Chemicals: Chlorine, OSWER 90-008.1, June 1990, available from the EPA National Service Center for Environmental Publications (NSCEP)
Fountain. An ornamental structure or recreational water feature from which one or more jets or streams of water are discharged into the air, including splash pads, ornamental pools, display pools, and reflection pools. The definition does not include drinking water fountains or water coolers.
Hydromassage Bathtub. A permanently installed bathtub equipped with a recirculating piping system, pump, and associated equipment. It is designed so it can accept, circulate, and discharge water upon each use.
- 15 volts (RMS) for sinusoidal ac
- 21.2 volts peak for nonsinusoidal ac
- 30 volts for continuous dc
- 12.4 volts peak for dc that is interrupted at a rate of 10 to 200 Hz
Maximum Water Level. The highest level that water can reach before it spills out.
Packaged Spa or Hot Tub Equipment Assembly. A factory-fabricated unit consisting of water-circulating, heating, and control equipment mounted on a common base, intended to operate a spa or hot tub. Equipment can include pumps, ait-blowers, heaters, lights, controls, sanitizer generators, and so forth.
Packaged Therapeutic Tub or Hydrotherapeutic Tank Equipment Assembly. A factory-fabricated unit consisting of water-circulating, heating, and control equipment mounted on a common base, intended to operate a therapeutic tub or hydro-therapeutic tank. Equipment can include pumps, air blowers, heaters, lights, controls, sanitizer generators, and so forth.
Permanently Installed Decorative Fountains and Reflection Pools. Those that are constructed in the ground, on the ground, or in a building in such a manner that the fountain cannot be readily disassembled for storage, whether or not served by electrical circuits of any nature. These units are primarily constructed for their aesthetic value and are not intended for swimming or wading.
Permanently Installed Swimming, Wading, Immersion, and Therapeutic Pools. Those that are constructed in the ground or partially in the ground, and all others capable of holding water in a depth greater than 1.0 m (42 in.), and all pools installed inside of a building, regardless of water depth, whether or not served by electrical circuits of any nature.
Self-Contained Spa or Hot Tub. Factory-fabricated unit consisting of a spa or hot tub vessel with all water-circulating, heating, and control equipment integral to the unit. Equipment can include pumps, air blowers, heaters, lights, controls, sanitizer generators, and so forth.
Self-Contained Therapeutic Tubs or Hydrotherapeutic Tanks. A factory-fabricated unit consisting of a therapeutic tub or hydrotherapeutic tank with all water-circulating, heating, and control equipment integral to the unit. Equipment may include pumps, air blowers, heaters, light controls, sanitizer generators, and so forth.
Spa or Hot Tub. A hydromassage pool, or tub for recreational or therapeutic use, not located in health care facilities, designed for immersion of users, and usually having a filter, heater, and motor-driven blower. It may be installed indoors or outdoors, on the ground or supporting structure, or in the ground or supporting structure. Generally, a spa or hot tub is not designed or intended to have its contents drained or discharged after each use.
Splash Pad. A fountain with a pool depth 25 mm (1 in.) or less, intended for recreational use by pedestrians. This definition does not include showers intended for hygienic rinsing prior to use of a pool, spa, or other water feature.
Storable Swimming, Wading, or Immersion Pools; or Storable/Portable Spas and Hot Tubs. Swimming, wading, or immersion pools that are intended to be stored when not in use, constructed on or above the ground and are capable of holding water to a maximum depth of 1.0 m (42 in.), or a pool, spa, or hot tub constructed on or above the ground, with nonmetallic, molded polymeric walls or inflatable fabric walls regardless of dimension.
Through-Wall Lighting Assembly. A lighting assembly intended for installation above grade, on or through the wall of a pool, consisting of two interconnected groups of components separated by the pool wall.
- Through-wall lighting assemblies and underwater luminaires, other than those low-voltage lighting products listed for the application without an equipment grounding conductor
- All electrical equipment located within 1.5 m (5 ft) of the inside wall of the specified body of water
- All electrical equipment associated with the recirculating system of the specified body of water
- Junction boxes
- Transformer and power supply enclosures
- Ground-fault circuit interrupters
- Panelboards that are not part of the service equipment and that supply any electrical equipment associated with the specified body of water
Table 680.9(A) Overhead Conductor Clearances
|Clearance Parameters||Insulated Cables, 0-750, Supported on and Cabled Together with a Solidly Grounded Bare Messenger or Solidly Grounded Neutral Conductor||All Other Conductors Voltage to Ground|
|0 through 15 kV||Over 15 through 50 kV|
|A. Clearance in any direction to the water level, edge of water surface, base of diving platform, or permanently anchored raft||6.9||22.5||7.5||25||8.0||27|
|B. Clearance in any direction to the observation stand, tower, or diving platform||4.4||14.5||5.2||17||5.5||18|
|C. Horizontal limit of clearance measured from inside wall of the pool||This limit shall extend to the outer edge of the structures listed in A and B of this table but not less than 3 m (10 ft).|
- Rigid metal conduit
- Intermediate metal conduit
- Rigid polyvinyl chloride conduit
- Reinforced thermosetting resin conduit
- Jacketed Type MC cable that is listed for burial use
- Liquidtight flexible nonmetallic conduit listed for direct burial use
- Liquidtight flexible metal conduit listed for direct burial use
Informational Note: Chemicals such as chlorine cause severe corrosive and deteriorating effects on electrical connections, equipment, and enclosures when stored and kept in the same vicinity. Adequate ventilation of indoor spaces such as equipment and storage rooms is addressed by ANSI/APSP-11, Standard for Water Quality in Public Pools and Spas, and can reduce the likelihood of the accumulation of corrosive vapors.