What Size Breaker for Pool Pump?
A pool pump requires a 20A breaker with 12 AWG wire on a 240V dedicated gfci circuit. This is a continuous load — breaker rated at 125% of actual draw.
🔌 Wire Length & Voltage Drop Check
Pool Pump Wiring Guide — NEC Requirements
Pool pumps require a dedicated GFCI-protected circuit per NEC 680.21. Variable-speed pumps may draw less but still need proper circuit sizing for maximum load.
Pro Tip
💡 All electrical equipment within 20 feet of a pool must be GFCI protected. The pump motor disconnect must be at least 5 feet from the pool edge.
Why a 20A Breaker?
The pool pump draws approximately 12A at 240V (2880W). As a continuous load (3+ hours), NEC 210.20 requires the breaker at 125%: 12A × 1.25 = 15.0A → 20A breaker.
Wire Sizing per NEC 310.16
For a 20A/240V circuit, 12 AWG copper is required per NEC Table 310.16 at 75°C. For runs over 75 feet, upsize to 10 AWG. Use our Wire Size Calculator and Voltage Drop Calculator.
Complete Parts List
To wire a pool pump circuit: a 20A double-pole breaker, 12 AWG NM-B cable (Romex) for interior runs or THHN/THWN-2 in conduit for exposed runs, a NEMA 14-30 receptacle (or hardwired), cable clamps, and appropriate junction boxes.
Disclaimer: This guide is for reference only. All electrical work must be performed by or verified by a licensed electrician. Local codes may differ from NEC.