Franklin Electric 2 hp Grinder Pumps
- 2 hp, 3450 rpm motors in standard and high head versions
- IGP delivers 32 GPM at 20 feet of head
- High Head IGP holds 30 GPM at 100 feet, 200-foot shutoff
- Runs on 208-230V single phase, 208-230V or 460V three phase
- Send us your lift and pipe length and we will size it
Your old grinder quit, the nameplate says 2 hp, and now you need to know whether a Franklin Electric 2 hp grinder pump will push hard enough for your line. The answer depends on head, not horsepower, because both FPS series here run the same 2 hp, 3450 rpm motor. The curves, amp draws, and sizing math below settle it.
Where 2 HP Is Enough, and Where It Runs Out
If your total head stays under 100 feet, the standard 2 hp IGP is enough: it moves 32 GPM at 20 feet of head and still gives 20 GPM at 100 feet. Above 100 feet its flow falls to 10 GPM at 120 feet, so long or uphill runs call for the High Head IGP, which delivers 30 GPM at 100 feet.
Franklin Electric 2 HP Grinder Pump Performance Curves
Flow falls as head rises. Use this table to see how much each 2 hp model delivers at your total head.
| Total head | IGP Series flow | High Head IGP (IGPH) flow |
|---|---|---|
| 20 ft | 32 GPM | Not listed |
| 40 ft | 31 GPM | Not listed |
| 60 ft | 30 GPM | Not listed |
| 80 ft | 25 GPM | Not listed |
| 100 ft | 20 GPM | 30 GPM |
| 120 ft | 10 GPM | Not listed |
| 125 ft | Past its useful range | 24 GPM |
| 150 ft | Past its useful range | 18 GPM |
| 175 ft | Past its useful range | 10 GPM |
| Shutoff head | 130 ft | 200 ft |
The IGPH gets its extra pressure from dual-stage hydraulics with upper and lower brass impellers. The motor size stays at 2 hp.
Amps and Voltage for Each 2 HP Model
A 2 hp grinder needs 208-230V or 460V service. None of these models run on a 115V household outlet. Give your electrician the full load amps below.
| Power supply | IGP Series amps | High Head IGP amps |
|---|---|---|
| 208-230V, single phase | 13.9 A | 18.5 A or 16 A, by model |
| 208-230V, three phase | 10 A | 13 A |
| 460V, three phase | 4.5 A | 6 A |
The high head pump draws more current on the same supply. If you move from an IGP to an IGPH, check that the breaker, wire, and control panel match the new amp rating.
Manual models need a panel sized to the pump's amps. Our simplex and duplex panels are listed by voltage and FLA.
Total Dynamic Head in Four Steps
- Measure the lift. Find the height from the pump's off level to the highest point of the force main.
- Add friction loss. Long pipe, small pipe, and extra fittings all add head. Use a friction chart for your pipe size and length.
- Add them up. Lift plus friction equals your total dynamic head.
- Read the curve. Find your total head in the table above and choose the model that still gives useful flow there.
Two Quick Examples
Say a home sits 40 feet below the high point of its force main, and friction adds 30 feet. That is 70 feet of total head, where the IGP gives between 25 and 30 GPM. The standard pump fits.
Now say a long uphill run adds up to 115 feet. The IGP falls toward 10 GPM there, while the IGPH still moves about 25 to 30 GPM. The high head model is the safer pick.
Jobs That Need 1 HP, Two Pumps, or More Head
Some jobs need a different setup rather than a stronger motor. Here is how to tell.
- Very short, low lift: Franklin Electric also builds a 1 hp FG100 Series grinder. Ask us if it suits your job before you buy more pump than you need.
- More than one building or no room for downtime: two 2 hp pumps in one basin give you a backup. That is a duplex station, not a bigger pump.
- Head past 200 feet: neither 2 hp model can reach it. Send us the numbers so we can look at other options.
For a basin with two pumps built in, see our Franklin duplex and simplex packages.
For the cutter, seal, and manual versus automatic details, visit the Franklin sewage grinder lineup.
Frequently Asked Questions
How high can a 2 hp pump push water?
A 2 hp grinder pump can push sewage up to its shutoff head, but it moves no flow at that point. The Franklin IGP Series has a shutoff head of 130 feet and gives 20 GPM at 100 feet. The High Head IGP Series has a shutoff head of 200 feet and gives 30 GPM at 100 feet. Size the pump so your total head sits well below the shutoff number, where the pump still delivers real flow.
Do I need a 1 hp or 2 hp grinder pump?
Choose a 1 hp grinder only for a short run with a low lift. For anything more, a 2 hp grinder pump is the safer size. Franklin's 1 hp option is the FG100 Series. The 2 hp IGP reaches 130 feet of shutoff head and still gives 20 GPM at 100 feet, and the 2 hp High Head IGP reaches 200 feet. Add your lift and pipe friction, then send us the total so we can confirm the size.
What is the amp draw on a 2 hp grinder pump?
The amp draw on a 2 hp Franklin grinder pump depends on the model and the power supply. On 208-230V single phase, the IGP draws 13.9 A, and the High Head IGP draws 16 A or 18.5 A by model. On 208-230V three phase, the IGP draws 10 A and the High Head IGP draws 13 A. On 460V three phase, they draw 4.5 A and 6 A. Size the breaker, wire, and panel to these full load amps.
Send us your lift, pipe length, and power supply, and we will quote the right 2 hp Franklin grinder.