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Which VFD? 110V input, 1.5hp motor

Discussion in 'Shop Talk - BladeSmith Questions and Answers' started by Samuel Goodhue, Aug 2, 2020.

  1. Samuel Goodhue

    Samuel Goodhue

    Nov 26, 2018
    Hey everyone,

    I know that VFD threads have been done a million times before, but I'm looking for advice on which specific make/model of VFD will fit my needs and I can't seem to find anything that clears it up.

    I'm currently running a 1hp motor on my belt grinder. It's set up in a direct drive configuration, No VFD, 4" drive wheel.

    I'm thinking about upgrading to a 1.5hp motor and a VFD. I've got a dedicated 110V 20amp circuit to work with in my studio and my question is this... is a KBAC27 my only choice for a VFD?

    I ask because every other less expensive VFD that I can find(like the Teco) seems to be either 110V input with a 1hp max, or 220V input with a 2hp(or more) max. Is the KBAC27D the only VFD that can take 110V power and run a 1.5hp motor?

    If Im misunderstanding something please let me know, my experience with electrical stuff is very limited.

  2. Hubert S.

    Hubert S.

    Dec 14, 2019
    As far as I know, the KB drives are the only ones that can run 1.5 HP motors on 110V. They offer a digital version in a similar price range (KBDA-27D), also in a NEMA 4 enclosure. I like the KBAC-27Ds, they are very easy to wire and appear to be very well built. You will love variable speed.
  3. 12345678910


    Jul 13, 2009
    Yes .
  4. Ken H>

    Ken H>

    Dec 31, 2011
    As far as I know, that is correct, the KBAC drives are the only drives to accept 120vac input for 1.5hp motor. I'd get a 2hp motor and derate it to 1.5hp to run on 120vac input, then if you ever get 220vac available you've got 2hp.
    Last edited: Aug 2, 2020

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