NEC Article 680: Swimming Pool Electrical
680.26 Equipotential Bonding
NEC 680.26 requires all metal within 5 feet horizontally of the inside walls of the pool to be bonded together using a minimum #8 AWG solid copper conductor. This includes reinforcing steel in the pool shell, metal coping, ladders, handrails, diving boards, pump motors, heater housings, light niches, metal fittings, and any metal piping within the zone.
The pool water itself must also be bonded per 680.26(C) via a listed water bonding device or through conductive pool shell components in contact with the water. This creates an equipotential bonding grid: if everything is at the same voltage, there is no voltage difference to push current through a person standing in the water while touching a metal rail.
Failure to bond any single metal component creates a shock hazard that may not be detected by GFCI. See our complete pool electrical guide for the bonding checklist.
680.44 GFCI Protection
Every circuit supplying pool, spa, or hot tub equipment requires GFCI protection per Article 680 regardless of voltage: pumps per 680.21(C), heaters, underwater lights, and all receptacles. Receptacles within 20 feet of the inside walls of the pool must be GFCI protected per 680.22(A).
At least one 125V, 15A or 20A receptacle must be installed within 6 to 20 feet of the pool edge for maintenance equipment per 680.22(A)(1). Lighting outlets, switching devices, and receptacles within 20 feet of the pool require GFCI. Pool pump GFCI breakers are a common source of nuisance tripping, usually caused by moisture in the motor or a deteriorating pump seal rather than a fault in the wiring.
680.23 Underwater Lighting
Underwater luminaires must be listed for the specific purpose and installed in approved forming shells embedded in the pool wall per 680.23(B). The junction box for underwater lights must be located at least 4 inches above the pool water level (8 inches above if the box does not have a threaded conduit entry), at least 4 feet from the inside wall of the pool, and accessible without entering or disturbing the pool finish per 680.24.
Low-voltage (12V or 24V) LED pool lights have largely replaced 120V incandescent fixtures and significantly reduce shock risk, but they still require GFCI protection. When replacing an old incandescent pool light with LED, the existing forming shell, junction box, and conduit can usually be reused if in good condition.
680.8 Overhead Conductor Clearances
NEC Table 680.8 specifies minimum clearances between overhead conductors and pools. Vertical clearance above the maximum water level: 22.5 feet for insulated supply or service-drop cables operating at 0-750V, and 14.5 feet above diving structures and observation stands.
Horizontal clearance: all overhead conductors must be at least 10 feet from the inside wall of the pool, measured horizontally. These clearances apply to all overhead conductors including telephone and cable TV lines. These requirements frequently impact pool placement during home construction and are a common reason pools must be repositioned away from the house to maintain proper clearance from the service drop.
680.21 Pump Motor Circuit
Pool pump branch circuits are sized based on the motor full-load current (FLC) from the pump nameplate or NEC Table 430.248, not the breaker rating. A typical single-speed 1.5 HP pool pump at 240V draws about 10A FLC, requiring a 20A circuit with 12 AWG wire.
Modern variable-speed pumps draw significantly less current at normal operating speeds and can save 50-80% on energy costs compared to single-speed pumps. A disconnecting means must be installed within sight of the pump motor per 680.12, located at least 5 feet from the inside edge of the pool.
GFCI protection is required for all pump circuits regardless of voltage per 680.21(C). The most common installation mistake is running undersized wire on a long run from the panel to the pump equipment pad without checking voltage drop.
Key NEC Tables Referenced
- Table 680.8 - Clearances
Related WireRef Guides
Frequently Asked Questions
What does NEC Article 680 cover?
Article 680 covers swimming pools requirements. Key sections include 680.26 Equipotential Bonding and 680.44 GFCI Protection. It applies to all electrical installations in the United States.
Where can I find the full text of Article 680?
The full NEC is published by NFPA and available at nfpa.org. Many libraries provide free access. Your local building department also has copies available for reference during permit applications.
Does Article 680 apply to existing wiring?
The NEC applies to new installations, modifications, and additions. Existing wiring that was code-compliant when installed is generally grandfathered unless a renovation triggers an upgrade requirement. Check with your local AHJ (authority having jurisdiction).
When did the current Article 680 requirements take effect?
NEC 2026 is the latest published edition (effective September 2025). NEC 2023 remains the most widely adopted edition by states. Adoption varies - check your state adoption status on our state code pages.
What wire connects to a pool bonding grid?
#8 AWG solid copper per NEC 680.26(B). The bonding conductor must be solid (not stranded) and can be insulated, covered, or bare. It connects all metal within 5 feet of the pool into an equipotential bonding grid.
Does a pool pump need GFCI protection?
Yes. NEC 680.21(C) requires GFCI protection for all pool pump circuits regardless of voltage. This applies to both 120V and 240V pump motors. Most pool pump GFCI trips are caused by moisture in the motor, not wiring faults.
How far can an outlet be from a pool?
At least one 125V receptacle must be located between 6 and 20 feet from the inside wall of the pool per NEC 680.22(A)(1). Receptacles closer than 6 feet are not permitted. All receptacles within 20 feet require GFCI protection.
NEC references verified May 2026