Quick Hits

🗓️ APRIL 24, 2026
⚡ SPARKY BREAKDOWN — EP 24

NEC 680.26 Equipotential Bonding (Why Everything Metal Gets Tied Together)
joshthesparky4 · Josh The Sparky

Opening Hook
Most guys think shocks come from “bad wiring”…
but around pools, the real danger is voltage difference —

two surfaces… two different potentials… one human in between.

NEC 680.26 exists to eliminate that difference completely.

Episode Overview
Quick breakdown of NEC 680.26 — covering equipotential bonding requirements around pools, spas, and similar installations.

This is all about:
what needs bonding,
how it’s connected,
and why grounding alone isn’t enough.

Core Idea
Bonding is NOT about clearing faults.

It’s about making sure everything you can touch is at the same electrical potential.

Because around water:
• Your resistance drops
• Small voltages become dangerous
• And “harmless” differences become shock paths

So the rule is simple:
If it’s conductive and near the pool — it gets bonded.

What NEC 680.26 Is Controlling
NEC 680.26 regulates:
• Equipotential bonding grids
• Metal parts of pool structures
• Perimeter surfaces around the pool
• Electrical equipment bonding
• Fixed metal parts within 5 feet horizontally

Key NEC Requirements (Simplified)

• All metal parts must be bonded together
Pool walls, ladders, handrails, light niches, and metal fittings

• Perimeter bonding is required (typically 3 ft around pool)
Concrete decks or surfaces must include a bonding grid

• Fixed metal objects within 5 ft must be bonded
Fences, metal piping, window frames, etc.

• Bonding conductor is typically #8 solid copper (minimum)
Not run for fault current — it’s for equalizing voltage

• Bonding ≠ grounding
They work together, but they do completely different jobs

Common Field Mistakes

• Thinking the ground wire replaces bonding
• Missing perimeter bonding in concrete decks
• Not bonding nearby metal fences or rails
• Using stranded wire instead of solid when not permitted
• Treating bonding like an “optional extra” instead of required safety

Why This Matters

Without bonding:
• Stray voltage can exist between surfaces
• You can become the path between two potentials
• Even a few volts can cause paralysis in water
• Faults can energize nearby metal without tripping a breaker

Bonding removes the difference —
so there’s nowhere for current to go through you.

Core Takeaways

• Bonding = equal potential, NOT fault clearing
• All conductive parts near the pool get tied together
• 5 ft rule = anything metal nearby is suspect
• Perimeter surfaces are part of the system
• #8 solid copper is your standard bonding conductor

Field / Exam Takeaways

• NEC 680.26 = bonding EVERYTHING conductive near the pool
• “Is it metal and within 5 ft?” → bond it
• Grounding and bonding are NOT interchangeable
• Expect questions on perimeter bonding grids
• Most wrong answers ignore equipotential bonding entirely

Final Takeaway

Grounding protects the system.
Bonding protects YOU.

Around pools, the danger isn’t always a fault —
it’s the difference between two surfaces.

NEC 680.26 eliminates that difference…
so you never become the connection. ⚡

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