Installation Requirements for Underwater Lights, Junction Boxes, and Other Equipment Near Pools and Spas

Mixing GFCI Protected and Non-GFCI Protected Wires
1. Do not install GFCI protected wires in the same conduit, tubing, cable, raceway, or enclosure, with wires that are not GFCI protected. This restriction does not apply to  equipment grounding wires and does not apply within panelboard cabinets.

Underwater Light GFCI Protection
1. Install GFCI protection for underwater lights operating at more than low voltage.
2. Do not install underwater lights on circuits operating at more than (>) 150 volts.

Underwater Light Depth
1. Install underwater lights so that the top of the light’s lens is at least (≥) 18 inches below the normal water level. This restriction does not apply to lights listed for use at least (≥) 4 inches below normal water level.
2. Guard underwater lights with lenses facing other than vertical against human contact. Such a guard may include a substantial plastic cage covering the light’s lens.

Wet-Niche Light Servicing
1. Install wet-niche lights so that they can be removed from the niche and placed on the pool deck to change lamps and for other maintenance and inspection. This means installing a cable that is long enough to reach the pool deck.

Underwater Light Junction Boxes
1. Use junction boxes listed and labeled for the intended use if using one to connect wires from underwater lights to wires from a panelboard. Size the box to comply with the box contents limitation in Section 3905.
2. Connect all metal conduit and grounding terminals to the junction box so that all metal is bonded together.
3. Locate junction boxes at least (≥) 4 inches above ground or pool deck level or at least (≥) 8 inches above maximum water level, whichever provides the higher elevation, and at least (≥) 4 feet from the pool or spa inside wall. Do not locate junction boxes in walkways unless they are protected by a fixed structure such as a diving board or a fixed-in-place box.
4. You may use deck mounted junction boxes for lights operating at low voltage if an approved potting compound fills the box to prevent moisture entry and if the box is located at least (≥) 4 feet from the pool or spa inside wall.

Underwater Light Device Boxes                                                                                                                                                                                                                                                                                    1. Use device boxes listed and labeled for the intended use if using one to connect wires from underwater lights to a transformer, GFCI, or other device such as a switch. Use a device box that has an air-tight seal between the conduit and the device box. Size the box to comply with the IRC box contents limitation.
2. Connect all metal conduit and grounding terminals to the device box so that all metal is bonded together.
3. Locate device boxes at least (≥) 4 inches above ground or pool deck level or at least (≥) 8 inches above maximum water level, whichever is higher, and at least (≥) 4 feet from the pool or spa inside wall. Do not locate device boxes in walkways unless they are protected by a fixed structure such as a diving board or a fixed-in-place box.
4. Use transformers and power supplies that are listed for swimming pool use to provide power to underwater lights.

Strain Relief for Flexible Cords
1. Provide strain relief for flexible cords from underwater lights that enter junction and device boxes. This means providing a clamp or some other means to secure the cable and protect the electrical connections from movement.

Underwater Speakers
1. Use underwater speakers that are listed for the intended use.
2. Install underwater speakers in grounded and bonded forming shells in a manner similar to underwater lights.

Pool Cover Motors
1. Locate electric pool cover motors at least (≥) 5 feet from the pool inside edge unless the motor is covered or separated from the pool by a permanent barrier.
2. Locate the pool cover motor control so that the operator has full view of all parts of the pool.
3. Install pool motor covers on a GFCI protected circuit.

Electric Pool Area Heaters
1. Apply this section to electric heating units (such as radiant heaters) installed within (≤) 20 feet from the pool inside wall.
2. Install electric heating units at least (≥) 5 feet from the pool inside wall and not directly over the pool.
3. Fasten electric heating units securely to the structure.
4. Use electric unit heaters that are totally enclosed or guarded.
5. Use electric radiant heaters that are guarded. Install these heaters at least (≥) 12 feet vertically above the pool deck.

Storable Swimming Pool Pumps and Lights
1. Use pumps and lights that are listed for the intended use with storable swimming pools. Install them according to manufacturer’s instructions.
2. Install storable pool pumps and lights on a GFCI protected circuit.

Spa and Hot Tub GFCI Protection
1. Install self-contained and packaged spas and hot tubs on a GFCI protected circuit if the heater load is not more than (≤) 50 amps. This does not apply if the self-contained or packaged spa or hot tub is listed and labeled as containing integral GFCI protection for all electrical parts within the unit.

Whirlpool Bathtubs
1. Install whirlpool bathtub motors on a dedicated GFCI protected circuit.
2. Provide access to whirlpool bathtub motors and other electrical equipment. See access requirements in Chapter 27.
3. Install a copper bonding wire at least (≥) #8 AWG connecting all metal pipes, pump motors, and other electrical equipment associated with the whirlpool bathtub. Install the bonding wire regardless of whether a double insulated whirlpool bathtub motor is installed. Make the wire long enough to bond a replacement motor that is not double insulated. Do not bond grounded double insulated whirlpool bathtub pump motors; instead, terminate the wire at the double insulated motor’s equipment grounding wire.
4. Install the receptacle for a plug-and-cord connected whirlpool bathtub pump motor that is accessible only from the motor access opening so that the receptacle faces the opening and is not more than (≤) 12 inches from the opening.