connecting a 10 horse power motor to the wall


Joined Sep 17, 2013
10 HP = 7.46 kW, so allowing for start-up surge current you would need a supply rated for much more than 7.46kW (i.e. >> 31A @240V RMS).


Joined Mar 14, 2008
What is the voltage rating of the motor?
(Anytime you want to offer more info about the motor without us asking, feel free to do so. :rolleyes:)

Thread Starter


Joined Oct 17, 2016
This is the motor i am considering, i will use that in the USA
hp 10
Maximum rpm 1,760
Voltage 208-230/460 Volts AC
Phase Three
Amps @ Full Load 26.5-24.4/12.2
Frequency 60 Hz
Electrical Connection Wire Leads
Electrical Rating
UL UL Recognized Components
CSA CSA Certified
Service Factor 1.15
Efficiency 91.7%
Inverter Rated No
Torque @ 460 Volts AC
Starting Torque 631.2 in.-lbs.
Accelerating Torque 482.4 in.-lbs.
Peak Torque 970.8 in.-lbs.
Continuous Operating Torque 357.6 in.-lbs.
Frame Size NEMA 215T
Enclosure Type TEFC
Enclosure Material Cast Iron
Bearing Type Ball
Overall Length 18 1/2"
Overall Width 15"
Overall Height 13"
Diameter 1 3/8"
Length 3 3/8"
Center to Base (A) 5 1/4"
Shaft Type Keyed
Key Stock Key stock is included.
Base Type Welded


Joined Jul 18, 2013
You will need a 3 phase supply, the most common is 460 if using in the US, Unfortunately it is out of the realm, size wise to be able to run it off a 1ph VFD, these usually top out at 5hp for the 1ph type.
You will also require a disconnect, fusing and over load, current dependant on 240 or 460v operation.


Joined Jul 18, 2013
As I mentioned in earlier post, you will be hard pressed to find a VFD that will drive a 10hp with 1 phase in, most top out at 5hp when using 240v 1 phase..
You could always try the support line of various suppliers, such as WEG, Mistubishi or Teco, or Hitachi.


Joined Nov 4, 2013
i just have a question stood in my mind, what if i used an AC drive (vfd) will that solve the problem ?
Yes it can be done. Most larger VFD's can be modified to work on higher powered single phase inputs as well. I've done several over the years for people.

I just put in larger components to increase the input rectifier bridges current rating and main power bank capacitor values by 2 - 3 times their stock ratings.