Full Wiring of 110V/120V KBAC 27D to 1.5 HP Motor

Quick Links:
Switching to 115V 1:55
AC line to VFD 5:25
VFD Wiring From Motor 7:00
Wiring to the Motor 8:41
Full Parts list with links (Canadian)
KBAC: nexusgrinders....
Motor 1.5 HP: www.automation...
2HP: www.automation...
12/4 Wiring: www.homedepot....
12/3 Wiring: www.homedepot....
Male Plug: www.homedepot....
3/4" Strain relief box connector: www.homedepot....
3/8" Strain relief box connector: www.homedepot....
Ring Studs: www.homedepot....
Marrettes: www.homedepot....

[@tedking6790]

Thank you for making this video dude, it’s a big help to people like me who are completely ignorant to how any of this works. You provide a valuable service and I appreciate it.

[@athomeforge2140]

Thanks for the comment and I’m glad that I could help you out!

[@padraigsheridan8316]

Thanks for making this. I just ordered the motor from your link. It's hard to find a decent priced 3 phase in canada.

[@Sarugo1234]

Thank you so much for making this video! It saved me from making at least 3 mistakes.

[@Bootsbladesbullets]

Thank you so much for this video, I have the same VFD and motor and was glad to see it done step by step before i take this task on

[@athomeforge2140]

Thank you! I made the video in hopes that if I was able to help one person out, then it was all worth it. So I'm glad that it was :)

[@johndepalma3795]

Great guide! Thank you

[@TheBrocaUnion]

Thank you so much for this video! I just got exactly the same setup and this saved my sanity.

[@athomeforge2140]

Glad I could help!

[@oldguyjourney]

Excellent video! Thanks for making this! Cheers

[@cdrive5757]

By now I'm sure you've discovered that running the motor as slow as you were showing us puts serious overload on the motor. Most VFD KZbin video's caution the viewer about reduced cooling air flow at low speeds. This because the fan is integral to the motor spindle. What those KZbin vid's never seem to mention is the slower fan is only a small part of the issue. VFD's employ PWM along with varying the Line Frequency. Most manufacturers control this by varying the Carrier frequency that produces the PWM. They usually set this to deliver maximum torque @ 50 - 60Hz. . Problem is this setting will dramatically increase input current at very low frequencies. If your not careful your motor will emit smoke if run for long periods at 10 to 20Hz ! Wakodahatchee Chris

[@megaknizzle]

Dude I have this exact same setup. Same motor, same vfd. I can’t thank you enough, sir! Awesome quality video Too man.

[@athomeforge2140]

Thanks! Glad I could help!

[@thenorsemen2452]

Thank you sir

[@josh4058]

I have the 2hp iron horse motor from the same place. Is it safe to assume the wiring should all be the same? Also I saw you mentioned in a different comment that you used 12/3 and 4 to future proof it. Meaning you all you’d have to to do is reconfigure the vfd and switch the plug for the wall if you end up switching to 230? Thanks for making this video, helped me out a ton!

[@athomeforge2140]

As long as you are running the 2hp motor on 110V it should all be the same. I remember reading that 2hp motors or higher require 220V? But I could be mistaken. Look in booklets that come with the VFD but I am fairly sure it just throttles the motor down to 1.5hp if you run 110V vs 220V coming out of the wall. This should not be a problem. If you can't find anything definitive, let me know and I will look some stuff up as well and get back to you! And yes you're correct about the future proofing. It would require the thicker gauge wiring for 220V.

[@cdrive5757]

@@athomeforge2140 The guy never replied to you. Regardless, running a 2HP motor on 120VAC is nuts! Waaaay too much current draw at that line voltage. Wakodahatchee Chris

[@trainwon5699]

👍

[@thatgrillguy1891]

Good tutorial, I will need to do something like this. I noticed you used 12/3 for the plug, but you are using 115 volt? What kind of circuit do you need?

[@athomeforge2140]

Thanks! I am only running a 15amp circuit currently. I went with 12/3 to future proof it if I go to a larger circuit, and it hardly cost any more than 14/3. Buy once cry once.

[@thatgrillguy1891]

@@athomeforge2140 Any issues tripping the Fuse? I believe a 1.5hp motor "can" draw up to 20 amps..But everyone's opinion seem to differ.

[@AkNuyten]

@@thatgrillguy1891 I have never had that problem. Not even close. I have lights on drawing off the same circuit, run it full speed with me putting lots of pressure into a grind and have not had any issues

[@mikesolomon5584]

I am looking at doing this same combination of items. Now that you have had it going for a while, have you found any issues with it bogging down due to the 1.5 hp, or the 110v?

[@athomeforge2140]

No, I haven’t had any problems. I have pushed 1/2” steel right into a 36grit belt on full speed and it didn’t bog whatsoever. That being said, a higher horsepower motor would help take material off at a greater rate I imagine but for making knives and medium-heavy stock removal I haven’t had an issue!

[@william2bond12]

I have bought the same vfd. I need to change the motor on my grinder because it is 1 phase. I noticed you are running the 230 volt motor on 115. Didn't know that was possible ?

[@athomeforge2140]

Yes, there is a little pin that gets pulled out and switched into another position to change from 240V to 120V. It happens at about 1:55 in the video!

[@william2bond12]

@@athomeforge2140 thanks for the info. I was thinking about getting the same brand motor but the 2 hp. Would that work

[@athomeforge2140]

@@william2bond12 Yeah it would work for sure, I was going to get a 2hp motor but they were out of stock. You might want to look into this but, I am fairly sure if you are running at 120V, the VFD throttles a 2hp motor down to 1.5hp output because of the load required. I am not 100% certain on that but I remember reading that on a forum.

[@athomeforge2140]

@@william2bond12 It is still fine to get and will work since, if you ever go to 220V then you will future proof your motor

[@william2bond12]

Received my new motor yesterday. Bought the 2 hp. Ordered Monday night and received it Wednesday plus it was free shipping. Hooked everything up today per instructions in your video and everything works great. Thanks again

[@TobaccoTooling]

You used the wrong turminals those round fittings you “ground down”