Pool Pump Amps, Watts & Breaker Size
A 240-volt in-ground pump is 10 to 12 A and 2,400 to 2,880 W on a 20 A circuit; a 120-volt above-ground pump is 8 to 12 A and 960 to 1,440 W on 15 to 20 A. The amperage is the easy part — everything that makes a pool circuit different from a garage circuit comes after it.
Pool Pump Power Requirements at a Glance#
A pool pump runs in a wet outdoor location, and that single fact shapes its whole circuit. A 240-volt in-ground pump draws 10 to 12 A for 2,400 to 2,880 W behind a 20 A breaker, hardwired and ground-fault protected; a 120-volt above-ground pump draws 8 to 12 A and 960 to 1,440 W on a 15 to 20 A branch through a 5-15R or 5-20R outlet. Neither figure is large, and neither is what makes this install different. The table below is what does.
Pool Pump Electrical Specifications#
| Configuration | Voltage | Amps | Watts (max load) | Breaker | Outlet (NEMA) |
|---|---|---|---|---|---|
| 240-volt in-ground pool pump | 240 V | 10–12 A | 2,400–2,880 W | 20 A | Hardwired (GFCI) |
| 120-volt above-ground pool pump | 120 V | 8–12 A | 960–1,440 W | 15–20 A | 5-15R / 5-20R |
A pool pump runs for hours in a wet outdoor location, so the whole circuit is ground-fault protected and passes through a disconnect the code plants a safe distance from the water. The in-ground pump hardwires at that disconnect, while a smaller above-ground pump can plug into a ground-fault outlet on its own protected branch.
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What a pool circuit requires beyond the breaker#
Every row here is a condition of the wet location, not a preference. They apply at both voltages on this page.
| The requirement | What it is | Why it is not optional |
|---|---|---|
| Ground-fault protection across the circuit | The defining feature of a pool-equipment branch | The pump sits in a wet outdoor location; the in-ground class is specified hardwired behind that protection, not merely near it |
| A disconnect at the equipment pad | A switch that kills the pump where it stands | Anyone servicing the pump has to be able to isolate it there, not at a panel inside the house |
| The 240 V or 120 V decision | 10 to 12 A hardwired, or 8 to 12 A on a cord | The in-ground class is the hardwired 240 V one and the above-ground class is the plug-in 120 V one — they are not interchangeable installs |
| A ground-fault trip that keeps repeating | The protection doing its job | It gets diagnosed, never bypassed. Of every circuit in a house this is the one where defeating the protection is least defensible |
| A cord run back to an indoor outlet | Not the specified connection | Even the above-ground class expects an outdoor receptacle on its own protected branch, not an extension through a window |
Two pump classes are counted here, one hardwired at 240 V and one plug-in at 120 V, and they are different installations rather than two sizes of one. Every requirement on this page follows from the wet location rather than from the pump, which is why the amperage is the least consequential number on it.
Circuit and Breaker Sizing for the Pool Pump#
Neither pump draws a large steady current — 8 to 12 amps — so 12-gauge copper on a 20-amp branch serves both. The in-ground unit is wired for 240 volts to halve the current for the same power, landing hardwired on its breaker, while the above-ground pump takes 120 volts on a 15 to 20-amp circuit. Because these pumps run for hours a day, the branch is built with the margin a near-continuous load deserves.
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Dedicated Circuit and Disconnect for the Pool Pump#
Pool equipment sits in a wet location and runs long hours, so the code demands ground-fault protection and a disconnect set a safe distance from the water — never within reach of someone in the pool. The in-ground pump hardwires at that disconnect, while a smaller above-ground pump can plug into a protected outlet on a branch of its own. The breaker follows the pump's rated draw, and a variable-speed model is sized from the maximum setting on its data plate rather than the low speed it usually runs.
Installation and Safety Notes for Pool Pump Wiring#
An above-ground pump matches its cord to a ground-fault 5-15R or 5-20R outlet, while an in-ground unit is wired directly at its disconnect. Any pool circuit is permit-and-inspection work, and the inspector checks the ground-fault protection, the disconnect location, and the bonding of all the pool equipment together. Bonding and wet-location wiring are not homeowner tasks — a licensed electrician should handle the pump circuit and the equipment bonding grid.
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Pool Pump Electrical FAQ#
What breaker does an in-ground pool pump need?#
A 240-volt in-ground pool pump sits on a 20-amp breaker, wired directly at its disconnect. An above-ground pump uses a 15 to 20-amp branch.
Why must a pool pump circuit be GFCI protected?#
Because the pump sits in a wet outdoor location where a fault could energize the water. Ground-fault protection cuts power instantly if current leaks to ground.
How far from the water does the pump disconnect have to sit?#
Far enough that no one standing in the pool can reach it — the code sets a minimum distance so the cutoff is safely out of reach of the water.
Does an above-ground pool pump plug into a normal outlet?#
It plugs into a ground-fault-protected 5-15R or 5-20R outlet, not just any receptacle. The protection is required for the wet location.
When does a pool pump run on 240 volts?#
In-ground pumps are commonly wired for 240 volts, which halves the current for the same power. Above-ground pumps usually run on 120 volts.
How much current does a variable-speed pool pump draw?#
It varies with speed, but the circuit is sized from the maximum draw on the data plate — in the 10 to 12-amp range for a 240-volt in-ground pump.
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