Search:

I wanted to have a power shut-off switch right before my 240 volt receptacle so that I could unplug it safely.

I'm pretty sure this one would work but just wanted to be sure before I order it;
...

The neutral wire doesn't prevent ground loops per se, but buy using the neutral wire for my 120v it keeps everything coming from the same source, which does prevent ground loops.

Yes I asked because I wanted to learn what to do in that situation. I will probably be using that wire now to avoid the potential of ground loops.

Thank you mactec54!

Simple answer, because it usually cost less and saves time running 10/3.

50' of 10/3 costs around $75.

50' of 10/2 + 50' of 12/2 costs around $90, plus it takes twice as long to install since...

There was already power run there from the main box. I'm running the 240 from the same box.

So if I'm just doing this - now - for the VFD power (240 volt) but running the 4 wire cable (two hots, a neutral and the ground) what do I do with the neutral wire? Just put a wire nut on it until...

Could you please clarify, I thought I understood everything but now I'm confused, above you stated that I needed to use a 4 wire #10 cable (two hots, a neutral and the ground) run to the filter/VFD...

Yes that's why I think it would be better to just wire for 240v now. Plus I can get a 2.2kw spindle for about the same price as the 1.5kw 120v spindle. Might as well just do it right the first time....

Will this same outlet work if I decide to use 220 instead of 120?

What about the 10/2 Romex? Would I need to get 10/3 Romex if I decide to use 220 volts instead?

Thank you Mactec54!

One a side note, I have been doing a LOT of research on setting up my CNC, and in almost every thread that I read I noticed that you always reached out and helped people here...

This one?

https://www.amazon.com/Leviton-2620-Receptacle-Industrial-Grounding/dp/B00002NAT9/ref=sr_1_7?keywords=30+amp+receptacle&qid=1569940031&s=gateway&sr=8-7

Correct.

This is the wire run in the wall from the main service box to the Disconnect > EMI filter ;
...

Correct. I'm amazed by how often people call what is cable "wire".


But aren't the color of the wires inside different in 10-3?

10-2 is black, white and bare copper for ground. I thought 10-3...

I reread this thread from the beginning and think I found a problem.

Since I am using the 110 volt 1.5kw VFD, shouldn't I be using 10-2 wire instead of 10-3 wire?

As I understand it I will...

Is there a specification that I should look for that tells me how flexible the cable is?

I think I fixed all the areas that you mentioned on the diagram below.

Your photo says no pigtails. How should you connect the shield of the spindle cable?

As I understand it the shield needs to be connected at BOTH ends.

I was going to pigtail it and connect it...

I have been working on a diagram that shows what I need to do to install the VFD correctly.

It's not completely finished, but before I go too far can someone check it for accuracy?

Why? Is that because the amperage is too high for a UPS?

Here's the link;

Concepts of Signal Noise Reduction - Shielding and Grounding

The entire manual is a good read. See page 22;
...

According to Lincoln Electrics EMI manual a properly sized UPS is fine. I will post a link to their manual tonight when I get home from work.

Do you have a link to the EMI filter that you posted?

I was going to use a disconnect switch next to the outlet, possibly this one;

https://www.amazon.com/gp/product/B07MNZ2P2X/ref=ox_sc_act_title_1?smid=A2H66MA3VRYS8E&psc=1


or this one;
...

Yes this will be permanent in wall install with cable run inside conduit.

I'll then use a cable like you see used on a stove and use that to connect from the wall outlet to the VFD.

Thanks again mactec54, appreciate all the help! Trying to do all my research before I buy anything.

I haven't changed my mind. I'll be running 10/3 Romex to the VFD, and then 16/4 double shielded...

Thanks mactec54. I thought 10 gauge was good up to 25 feet, but apparently not. Thank you for the correction.

What style of 30 amp receptacle is best to use with something like this?

Is 8 gauge wire with a 30 amp wall outlet, and a 25 Amp circuit breaker correct? It's going around 30 - 40 feet max.

Thanks mactec54, appreciate the help!

All things being equal, if I ran a 20 amp line would the 1.5Kw spindle run better than a 800 watt on a 15 amp line?

Could someone please clarify something regarding the 110/120 volt spindles? I was about to buy a 110v 2.2KW spindle and then I ran across this thread, and grateful that I did!

From what I...

I agree, the Masso will be much better than any system running windows. I do like the acorn, but being tied to a windows machine is what killed it for me.

The whole point is to get rid of the...

Thank you for this write-up. Great job!