Pools, spas and Article 680 on the Texas journeyman exam, and why the wrong answers come from a different article

The idea under the article

Shock needs a difference across the body, a difference between the hand on the ladder rail and the foot on the wet deck, and voltage in the abstract does nothing on its own. Equipotential bonding goes after that difference and leaves the voltage where it is.

Tie the pool shell, the surface around it, the ladder, the handrails, the metal fittings, the circulating pump and the water together and they move as one mass. If something on the utility system lifts that whole assembly a few volts above true earth, a swimmer bridging two parts of it still has nothing across the body. Once you hold that idea, Article 680 stops reading like a list of distances.

The clean version to carry into the room: the equipment grounding conductor answers what happens when something breaks, and the bonding grid answers what happens when nothing has broken and the earth is still a few volts off. The grid is never sized to carry fault current, since its whole job is done at a few volts in a place where nothing has failed yet.

How the bank tests this

Seven of the 500 items in our bank touch pools, spas and the water around them, and the filing tells the story before the questions do. Three of the seven sit in grounding and bonding while the other four sit in installations, and that split is exactly the confusion the article is written against.

Two of those three are pure distractor items. One describes the grid as grounding the pool and asks what it actually does, with wrong answers offering fault current back to the service, a lower electrode resistance, and a stand-in for the equipment grounding conductor. The other asks whether ground-fault protection on every circuit takes the place of the grid, and the answer turns on there being no imbalance for a device to sense when the earth itself is a few volts off.

So expect at least one grounding-flavored choice on any Article 680 bonding item. Item writers know the confusion exists and build the distractors out of it, so the fastest filter is to ask what has failed in the scenario. If nothing has failed and current is running through a person anyway, you are in bonding territory and the grounding options can go. The other four bank items ask which part of the article you are standing in.

Which part you are standing in

Article 680 is organized by the kind of installation, with general sections at the front reaching all of it. Permanently installed pools have the 680.20s, storable pools start at NEC 680.30, and hydromassage bathtubs sit in the 680.70s near the end. Spas and hot tubs, fountains, therapeutic pools and tubs, and electrically powered pool lifts each carry a part of their own.

That structure is the single most useful thing to know about the article under a clock. Answering a spa question out of the permanently installed pool part is the most common way to lose one of these items, and it feels correct while you are doing it, because the paragraph you landed on is real and is about pools.

The last row is a bank item in its own right, and its wrong answers stretch the marina article past a facility it was never written for and treat an open body of water as a pool. Article 682 was written for water the other articles leave alone, such as ponds, canals and reservoirs used for industrial or agricultural purposes, and it carries its own datum plane and ground fault requirements. Sorting the water first matters, since these articles set different distances for what looks like the same installation, and the same care applies at marinas.

The definitions were rewritten for 2026

A storable pool and a permanently installed pool used to be separated by a water depth, and plenty of candidates still carry that number around. It is gone. In the 2026 definitions a storable pool is described by being installed entirely on or above the ground and intended to be stored when out of use or moved, and a permanently installed pool by being built in the ground, partly in the ground, above ground, inside a building or on a building.

Those definitions live in Article 100 now, which is another reason a candidate hunting through Article 680 for them comes up empty. Read both in the 2026 book before deciding which part of the article a question belongs to, because that decision comes before every distance on the page.

One more trap lives in the same split. A hydromassage bathtub sits in a bathroom and reads like a Chapter 2 question. The part governing it sits nowhere near the part governing a pool, and the bank item on it turns on ground fault protection plus access to the motor, with the pool bonding grid offered as the leading wrong answer.

What goes into the grid

The article names the parts one by one, so the list is the rule, and in outline it runs longer than people expect:

• The conductive shell of the pool, where the shell is conductive.
• The perimeter surface, which NEC 680.26(B)(2) takes out 3 feet horizontally beyond the inside walls.
• Metal parts of the pool structure, including reinforcing steel and the metal in a fitted structure.
• Underwater lighting, and metal fittings in or attached to the pool.
• Metal parts of the equipment that circulates, treats, heats, cools or dehumidifies the water, and of an electrically powered pool cover, under NEC 680.26(B)(6).
• Fixed metal parts near the water. NEC 680.26(B)(7) reaches them within 5 feet horizontally of the inside walls or 12 feet above the maximum water level, and 680.26(B)(6) applies the same reach to other electrical equipment where no permanent barrier keeps people away from it.
• The pool water, through a conductive surface in contact with it.

That last one surprises people every time, and it follows directly from the idea. If everything a swimmer touches sits at one voltage while the water sits at another, the difference you were removing has been put straight back. Read the list in your own copy, since it has grown over editions.

Where the grid meets the premises system

No separate conductor runs from the grid back to the panel. NEC 680.26(B) says so in as many words: the bonding conductors are not required to be extended or attached to remote panelboard enclosures, to service equipment, or to electrodes. That sentence is where half the teaching on this subject stops, which leaves a wrong idea behind.

The grid meets the premises equipment grounding system anyway, at the pump. Metal parts of the equipment circulating and treating the water are bonded parts, and that equipment is fed by a branch circuit with an equipment grounding conductor landed on it, so the two networks tie together without anybody running a conductor to a distant electrode.

The article says as much in the one place that meeting might fail to happen. Where a double-insulated pump motor is used, NEC 680.26(B)(6) has a solid 8 AWG copper conductor extended from the pool's bonding means to an accessible point near the motor, long enough to bond a future replacement, and where no connection exists between the bonding means and the premises equipment grounding system, that conductor lands on the equipment grounding conductor of the motor circuit. A grid genuinely isolated from the premises system makes nothing safer, since it moves the potential difference one enclosure further out and leaves it there for the first person standing on a wet deck with a hand on a grounded railing.

Distance rules and equipment rules

Both kinds sit in this article, and reading them as one kind is how these items get lost.

The location rules are the ones everybody remembers. NEC 680.22(A)(4) holds the 20 foot figure for receptacles measured from the inside walls, and its heading names special purpose ground-fault circuit interrupters alongside the ordinary kind. NEC 680.22(B) governs how close a luminaire or a ceiling-suspended fan may sit, at 5 feet horizontally from the inside wall and 12 feet above the maximum water level. Both sections carry qualifiers in the same sentence as the distance, so read those before you use the number.

The equipment rules work differently. The general ground-fault section at NEC 680.5 reaches across the whole article, and the permanently installed pool part carries pump motor rules built around the motor and its circuit. The 2026 edition added NEC 680.21(D) covering a pool pump motor that gets replaced, reconditioned or repaired, which nobody sitting on a 2023 memory has read. Overhead conductors get their own clearances above the water, and where an existing span falls short the pool moves. The matching question set works the same subject from the code side, with the section text and the worked arithmetic, at the pools and spas question set.

The cheapest point on the paper

Special Occupancies, Equipment, and Conditions carries 6 of the 56 scored items on the journeyman NEC Knowledge portion and 3 of the 24 on Calculations, per the PSI candidate bulletin updated 9 July 2026. Article 680 shares that allocation, and it sits in Chapter 6 while the blueprint line is named after three chapters, so a candidate hunting for pools among the occupancies burns a minute finding that out. Almost nobody prepares for this material, and every study schedule that runs out of time runs out of it here, which makes the marginal point cheaper than one anywhere else.

An hour with the book does the rest. Open Article 680 at its parts list and read only the part titles. Read the equipotential bonding section end to end, marking the line saying the bonding conductors need not run to a panelboard, service equipment or an electrode, and the double-insulated pump motor paragraph. Read the Article 100 definitions of both kinds of pool, then mark the ground-fault paragraphs in each part without memorizing a distance.

Questions people ask

What is equipotential bonding at a swimming pool?

It is the practice of tying every conductive thing a swimmer can reach into one connected mass, so none of it can sit at a different voltage from the rest. Shock needs a difference across the body, and the grid removes that difference while leaving the voltage alone. Tie the shell, the perimeter surface, the ladder, the handrails, the metal fittings, the circulating equipment and the water together and they move as one, so a swimmer bridging two parts of the assembly has nothing across the body even when the whole thing lifts a few volts above true earth.

Does GFCI protection take the place of the bonding grid?

No, and the bank carries an item built on exactly that assumption. The two requirements answer different failures. A ground-fault device senses an imbalance between the conductors of a circuit, and the differences the grid removes can come from current in the earth from a neighboring source, with nothing on the pool circuits faulted and nothing for the device to sense. NEC 680.26 bonds the shell, the perimeter surface, the metal parts and the water so they sit at one potential, and no protective device substitutes for that. Neither requirement stands in for the other.

Does the bonding grid have to run back to the panel?

NEC 680.26(B) states that the bonding conductors need not be extended or attached to remote panelboard enclosures, to service equipment, or to electrodes. The grid still meets the premises equipment grounding system, at the pump, because the circulating equipment is a bonded part and is also fed by a branch circuit with an equipment grounding conductor landed on it. Where a double-insulated pump motor is used, 680.26(B)(6) has a solid 8 AWG copper conductor run from the bonding means to an accessible point near the motor, connected to the motor circuit equipment grounding conductor where nothing else makes that connection.

What changed for pools in the 2026 NEC?

Two things a candidate meets straight away. The Article 100 definitions of a storable pool and a permanently installed pool were rewritten, and the water depth figure that used to separate them is gone, so a storable pool is now described by being installed entirely on or above the ground and intended to be stored or moved. And NEC 680.21(D) is new, covering a pool pump motor that gets replaced, reconditioned or repaired. Texas adopted the 2026 edition effective 1 September 2026 under 16 TAC 73.100, and the examinations reference it from the same date.

How many pool questions are on the Texas journeyman exam?

Few, and that is the argument for studying them. Special Occupancies, Equipment, and Conditions carries 6 of the 56 scored items on the NEC Knowledge portion and 3 of the 24 scored on Calculations, per the PSI candidate bulletin updated 9 July 2026, and Article 680 shares that allocation with health care, hazardous locations, marinas and the rest of Chapters 5 through 7. In our own 500-question bank, seven items touch pools and the water around them, and three of those are filed under grounding and bonding.