10 hp motor
10 Hp Single-Phase Motor: Custom Solutions and Alternatives
A 10 horsepower single-phase motor is about 7.5 kW on a one-phase supply. Compressors, saws and small pumps still use this size when the building has no three-phase. Starting current is high, so factories usually move the same load onto three-phase.
JWMotor’s published motors are IEC three-phase machines (YE3, Y2 and related). We do not print a 10 hp capacitor-start motor as a stock leaflet. That does not mean we ignore the enquiry. If your building already has three-phase, we quote a 7.5 kW YE3 at the same speed as the old machine. If you truly have only single-phase, write that clearly — we can look at a custom winding, a VFD on a three-phase motor, or tell you honestly when we are the wrong factory.
Send voltage, frequency, 1-phase or 3-phase, hp or kW, poles or r/min, mounting, and a nameplate photo to contact us.
What to do next
- Look at the starter: one phase or three
- 10 hp ≈ 7.5 kW on an IEC quote
- Three-phase already in the plant → YE3, same poles as the driven machine
- Only single-phase → custom enquiry, not a silent YE3 swap
Words on this page
- Horsepower (hp) vs kilowatt (kW)
Horsepower is a US/imperial size. IEC nameplates use kilowatts. A rough conversion is 1 hp ≈ 0.75 kW, so 10 hp is about 7.5 kW. The numbers will not match to three decimals; for a quote, 7.5 kW plus poles and volts is enough.
- Single-phase vs three-phase
Single-phase is the supply in most houses and small shops (two live conductors, typically 220–240 V). Three-phase is the supply in factories (three live conductors, often 380–415 V). A motor is wound for one or the other. A three-phase YE3 will not start on a single-phase breaker by itself.
- Starting current
When a motor starts across the line, it draws several times its running current for a short time. On single-phase, a 10 hp machine hits the supply hard — lights dip, breakers trip, generators struggle. That is why plants move this size onto three-phase, or use a soft starter / VFD.
- Capacitor-start (and capacitor-run)
Many single-phase motors use a capacitor to create a start winding. That is a different internal layout from an IEC three-phase squirrel-cage motor. Matching only the horsepower number does not make the shaft, feet or capacitors the same.
FAQ
Do you stock a 10 hp single-phase motor?
Not as a standard leaflet. Our catalogues are three-phase IEC. We still want the enquiry: many sites that search “single-phase” actually have 380 V three-phase in the room. If you only have 220 V single-phase, say so and ask for custom.
I have three-phase. What do I order?
About 7.5 kW, the same poles (or r/min) as the machine, voltage/frequency, and foot or flange. YE3 is the usual IE3 motor.
Will a three-phase motor run on single-phase?
Not by wiring it straight to a single-phase breaker. A VFD or phase converter can feed a three-phase motor from single-phase, but that is a designed package, not a spare-part trick.
Can you customise voltage or mounting anyway?
Yes. Custom is normal for OEM lots: special voltage, shaft, flange, tropicalisation. Use the contact form and treat this page as the explanation, not as a “we don’t do that” dead end.
Stock or custom
If this is not a JW stock leaflet motor, we still quote custom windings, voltages, mountings and special duty. Write voltage and frequency (and whether the supply is single-phase or three-phase), kW or hp, speed or poles, foot or flange, and attach a nameplate photo.
Ask for a custom quote