Ok, so here is the plan.
Have I not separated the dust collector (and the spindle as a bonus) from the X controller?
Comments please.
Robert,
I am not tripping any breakers.
The dust collector draws 8 amps, the spindle draws 7 amps (on a 20 amp circuit)
And I have never had a problem of tripping a breaker.
So If I separate both of them from the X controller and put them on their own circuit, would I not achieve my goal?
Heās referring to the relay itself. The relay itself recommends no more than 12A. Dewalt + Dust Collector is more than 12A. Your circuit can handle it but the relay itself may not handle it.
Justin,
Yes I found the same information, but when I looked further into the specifications, it says that it has a 40 amp relay.
And again, I have never tripped the circuit breaker in either the main panel or the relay itself.
So, yes, Iām a bit confused on that one.
The relay component can handle it but the internal wiring may not or some other component may be the limiting factor. The plugs themselves may only be 15A rated each (think the outlets you put in the wall) but thereās 2 of them so you need a relay to handle the possibility of short bursts of high current when switching. You donāt want a relay that can only handle your desired current draw but you want overhead to avoid issues. Similar in theory to a circuit, just because a circuit can handle 20A doesnāt mean you should.
I understand what youāre saying.
But when I install a circuit, the outletās rating will match.
If push comes to shove, I will install two relays.
But Iām hoping to do it with just one, so I can keep my machine area āneatā just to ā ā ā ā off Bob Jewell.
Interesting thoughts though, and I appreciate your input.
Just kidding Bob. 
Iām not talking about the outlets that you would install in the wall. Iām talking about the outlets installed inside the IOT relay. Same theory though.
Based on http://www.digital-loggers.com/iotspec.pdf, they are NEMA 5-15 outlets which means they are 15A outlets (2 sets of 15A outlets) which means when you install a 7A and 8A device, youāre hitting the MAX of the outlet rating which is never advisable, hence the recommended 12A rating (80% of max rated current).
80% of 20A is 16A so running the Dewalt and the dust collector is not an issue for the circuit. Itās only an issue for the IOT relay device itself. Remember that when we talk about the relay, weāre not talking about the actual relay but the IOT relay device, which includes wiring and the outlets.
You can run it that way if you absolutely canāt deal with 2 relays. By doing that, you run a higher risk of fire, relay breakdown, and potential issues with your DC and Dewalt due to relay breakdown. If something were to happen, youād be hard pressed to prove that deliberately running a device in a way against manufacturer recommendations for pure aesthetics didnāt cause the issue and therefore you should still get reimbursed. Insurance adjusters also do Google searches and this thread is pretty damning to any efforts to prove otherwise. I hope nothing happens at all, but just stating what should be obvious.
Everybody here is giving the same advice with the same cautions. Everybody is just trying to help and has been trying to help with all your problems. It is getting a little frustrating because when we try to explain something to you, you say things like āI understand what youāre sayingā and two sentences later you say something else which contradicts it.
I donāt know whyāre you making this as science project.
This is what I use for two years now. Two of them. One controls Shop Vac, other controls HF Dust collector.
Simply hit the button when ever you need. Canāt be easier than this. Copy?.
This one is another professional option if you are really that lazy.
Ouch,
Well it is certainly not my intention to ā ā ā ā anyone off.
Justin,
Yes, I did misunderstand you.
I thought you were talking about the Shop wiring and not the relay.
However, Iām a bit confused about the relayās specs.
I know its listed as a 12 amp product, but when I read further on the spec sheet it says that is has a 30 / 40 amp relay.
Maybe Iām misunderstanding that also.
All that being said, my second relay is on order and Iām going to run one on the spindle and one on the dust collector.
Sometimes it takes me a bit longer to understand.
The IOT relay consists of multiple components. Within that device there is an actual relay. Something like this.
That component opens and closes a circuit based on the presence or absence of a small signal current. This is what is rated to 30-40 amps. The IOT device itself has more than just this component. It also contains an outlet and wiring to and from said outlet. Its the outlet and the wiring that are only rated to 15 amps. You can only apply current draw to an electrical system based on its weakest component. Therefor even though you could push 30-40 amps through the relay box within the device, you cant push that much through the entire device as the outlet and wiring that are part of the circuit are not designed to take it.
No offence, we all having fun here. Any discussion here is good for learning. Wish everyone trying to make things better as hard as you are. I didnāt mean to hurt your feeling. 
Allen,
None taken.
I just know how I want my machine configured, and I know that it can be done.
I also realize that I misunderstand things at times. (as I did in this case)
Iām still a noob here myself.
But at no time did I mean to ā ā ā ā off Bob.(or anyone else)
I donāt disagree with you.
I ordered another one this morning.
Well today I ran a new circuit and now the dust collector and spindle are on their own circuit, an the CNC controller is on its own circuit
Ran some air carves for tryout and then ran a cut program.
It ran all day with zero problems.
Thank you to all that provided input along with Inventables tremendous support.
(even if Iām hard headed at times)
Yes, these actually work pretty good.
https://www.amazon.com/BCTINT-10031-010-Automated-Vacuum-Switch/dp/B0035YGLZG