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How Many Amps Does a Well Pump (1 HP) Use?

Well Pump (1 HP) draws about 6.3 amps at 240 volts (1,500 watts running) and briefly spikes to around 13 amps at startup. Well Pump (1 HP) runs on its own dedicated 240 V circuit: plan on a 20 A double-pole breaker (per the pump's FLA and control box).

Voltage

Amps = watts ÷ volts. Enter the wattage from your appliance's nameplate or label for an exact figure.

Current draw: a 1 HP well pump

6.3 A

At 240 V
1,500 W

This appliance's circuit is sized from its nameplate per the NEC, not from wattage; see the circuit guidance below.

Well Pump (1 HP) amperage at 120 V and 240 V

Same 1,500 W load: the current halves when the voltage doubles. Well Pump (1 HP) is typically a 240 V appliance in US homes.

DrawWattsAmps at 120 VAmps at 240 V
Running1,500 W13 A6.3 A
Starting (surge)3,000 W25 A13 A

The startup surge lasts a fraction of a second; it matters for generator sizing and breaker trip curves, not for your electric bill.

Breaker and circuit for a 1 HP well pump

Well Pump (1 HP) runs on its own dedicated 240 V circuit: plan on a 20 A double-pole breaker (per the pump's FLA and control box). Motor circuits size from full-load-current tables with inrush allowance (NEC Article 430), not running watts.

Worth knowing: 1 HP and larger submersible pumps are almost always 230 V.

Guidance only: actual circuit sizing depends on your unit's nameplate, wire run length, and local code. Confirm with a licensed electrician. See the wire & breaker size chart for the full NEC ampacity table.

Measure what a 1 HP well pump actually draws

The figures above are typical ratings, and this load is usually hardwired or on a 240 V circuit, so a plug-in meter can't reach it. A clamp meter reads the current on one conductor at the disconnect or panel without breaking the circuit; opening a panel is work for someone qualified, and the voltage pen confirms a circuit is dead first.

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Frequently asked questions

Well Pump (1 HP) typically draws about 6.3 amps at 240 volts, based on a typical rating of 1,500 watts (amps = watts ÷ volts). Because it has a motor or compressor, it briefly pulls around 13 amps at startup. Check the nameplate on your specific unit: ratings vary by model.

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