Pool Electrical Calculator

Circuit requirements for pump, heater, lights, and automation.

Pump motor (HP)

Heater type (0=none, 1=gas, 2=heat pump)

Number of pool lights

Light type (1=LED 12V, 2=incandescent 120V)

Salt chlorinator (0=no, 1=yes)

Automation panel (0=no, 1=yes)

Spa blower (0=no, 1=yes)

Wire run to main panel (ft)

Tab to move between fields

Sub-panel size (amps)

Total connected load (amps)17.4

Dedicated circuits needed3

GFCI breakers needed3

Pump circuit (amps)15

Heater circuit (amps)6

Bonding wire (#8 Cu, ft)125

Feeder Wire Size#6 AWG

How to Use This Calculator

Enter the pool pump motor horsepower — residential pools typically use 1 to 2 HP.
Select heater type: 0 = none, 1 = gas (minimal electrical draw), 2 = heat pump (high amperage).
Enter the number of pool lights and whether they are 12V LED or 120V incandescent.
Toggle salt chlorinator, automation panel, and spa blower if your pool has these components.
Enter the wire run distance from the pool sub-panel to your home's main electrical panel.
Review Sub-Panel Size (amps), Dedicated Circuits, and GFCI Breakers for your electrical contractor.

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