What size breaker should I use for a well pump?

How Many Amp Breaker Should A Well Pump Have?

Well Pump (HP) Volts Req. Circuit Breaker (Amps)
0.5 HP 110V 15A
0.5 HP 230V 15A
0.75 HP 230V 20A
1 HP 230V 25A

When would you use a 30A circuit breaker?

Typically, a 30-amp breaker is designed for heavy-duty appliances like HVACs and water heating systems. Besides, it can only accommodate 30-amp receptacles if it’s a single-outlet circuit breaker. If it’s a multi-outlet device, we can install a 20-amp circuit to protect the #10 conductor.

Can you combine 2 30 amp breakers?

No. The breakers are sized for the wire that was run. If you put two circuits into one breaker a single wire of the circuit (which was rated to carry 15amps) could now carry 30 before the breaker blows. This can lead to melting wires and fires.

Why does my well keep tripping the breaker?

One common cause of a submersible pump tripping its breaker can be cracks or leaks in the housing. If your pump’s housing is cracked, water could be getting into the pump through these cracks and causing it to short circuit. The same can be happening if you have a leak in your pump which is letting water in.

How many amps does a 1.5 HP well pump draw?

For example a 1.5 HP Baldor motor turning 3450 rpm draws 13.4 amps on 120 volt service.

Does a well pump need to be GFCI protected?

A well pump doesn’t need protection from the ground. The equipment ground is connected to the well pumps. GFCI protection isn’t always superior to proper grounding and bonding. We can’t be sure that users will maintain the grounding connection, so we install the protection most often.

How long can a well pump run continuously?

How Long Can A Well Pump Run Continuously? As mentioned, a quality high-quality starter kit sump pump can run up to 24 volt hours; a more mediocre one can run continuously for between 6 and 18 hours. cooling down the device at this long a time took a substantial amount of time.

Why does my well pump pressure switch keep tripping?

Continuous tripping could be caused by a broken wire leading to or inside the water pump. Check the well tank pressure gauge to see if it is at least 40 PSI (or the cut-off PSI for your pressure switch model). If it isn’t, make sure your filter isn’t clogged or in need of a change.

Do well pumps have thermal overloads?

Most small pump motors now have a thermal overload built into the motor. These overloads will trip the motor off when it is pulling too many amps and overheats.

How many amps does a residential well pump draw?

A 240 volt, 1 horsepower well pump draws 10 amps of current. When the pump starts, it can draw up to 35 amps, but only for 5–10 seconds.

How many amps does a 1/2 HP well pump draw?

When delivering 1/2hp to the pump, it draws 5.0 Amps. If that motor operates at its service factor of 0.8, it will draw 6.0 Amps. Most installations have motors near the maximum load.

How many amps does a 3/4 HP well pump draw?

6 to 8 amps

Re: Amp draw on a 3/4HP pump
Running amps will be 6 to 8 amps.

How many amps does a 2 hp motor draw?


HP 1 Phase Amps 3 Phase Amps
115 volt 230 volt
2 24 6.8
3 34 9.6
5 56 15.2

How many amps does a 1 hp submersible pump draw?

A 1 HP submersible pump engine will draw a 3.2-amper current if it is a single-phase motor at 230 volts of voltage. If it is a three-phase motor at 440 volts, it will draw a maximum 1.7-amper current.

What size breaker do I need for a 1 horsepower well pump?

25 amp

A 25 amp circuit breaker means the pump is 1 HP or smaller and will use ~9 amps/1400 watts during operation.

What size breaker do I need for a 1/2 HP sump pump?

Sump Pump Current
According to National Electric Code Table T430-148, the full-load current of a 1/2 horsepower motor operating at 115 volts is 9.8 amperes. The maximum breaker size for a sump pump motor of this size is 250 percent of the full-load current or 24.5 amps.