CNC Outlet Circuit Utilization Question

[garymkrieg]

My shop has two separate 20 amp circuit breakers in one panel box that supply power to the outlets around the shop. My plan is to utilize two separate outlet circuits to power the CNC machine and all other devices. As I see it I have the following 4 things that require power:



1. CNC Machine

2. Router

3. Shop vacuum

4. Laptop computer



My plan is as follows:



Circuit #1

CNC Machine

Laptop computer



Circuit #2

Router

Shop vacuum



Based on your experience is that OK or is there a better plan?



Gary

[dadof4]

I've been running all of the above on one 20a circuit  

[garymkrieg]

Thanks, I was thinking more along the lines of reducing the possibility of electrical spikes and interference.

Gary

[kevin]

A couple of years ago a forum member here was having issues with his computer freezing in the middle of running files. It would happen intermittently so it was an issue that didn't always create problems but when it did it ruined his project. After trying the usual remedies to no avail, and quite a bit of frustration he realized he had a refrigerator on the same circuit as the one he had his computer plugged in to. Once separated the problem was solved.

[asumasensei]

Your asking about amperage.

DWP611 - 7A
Rigid shop vac - 12A
Laptop - ?
Shield - 2A(?)

Stay as low as possible unless you’re getting interference.

[agrpm]

Gary,

I had the same rationale as you in regards to two seperate 20amp circuits (my garage is the same way). My setup is almost identical to yours. One thing to remember, if you get the Power route with the DWP618 router its rated at 12amps, not the 7amps the smaller DWP611 is.

To date I have not had any issues. I feel that the computer running on the same circuit with the machines power box would allow an even steady draw, and I dont want either to be subjected to interference.The other circuit is subjected to more power spikes. I just try to remember to kick the router on separately from anything else (these things draw the most on start up right?) And I've avoided issues thus far.

[asumasensei]

Feb 11, 2020 15:27:07 GMT agrpm said:

Gary,

I had the same rationale as you in regards to two seperate 20amp circuits (my garage is the same way). My setup is almost identical to yours. One thing to remember, if you get the Power route with the DWP618 router its rated at 12amps, not the 7amps the smaller DWP611 is.

To date I have not had any issues. I feel that the computer running on the same circuit with the machines power box would allow an even steady draw, and I dont want either to be subjected to interference.The other circuit is subjected to more power spikes. I just try to remember to kick the router on separately from anything else (these things draw the most on start up right?) And I've avoided issues thus far.

Yeah I forget that MillRight has quite a few different options. Yes that is true but the Dewalt routers (and most worthy brands) have a slow start to help with overloading a single circuit because they’re typically run with dust collection (high amp vacs). On any jobsite asking for two separate circuits can be a pain. To be honest, I think you’re looking for a mountain on a mole hill. It’s definitely something to be conscious of but I wouldn’t put it that high up on the list. Considering you’re on two separate 20A circuits already, there’s plenty of other factors that are going to get in the way before I would even consider that as an issue.

If you were having issues I wouldn’t even start troubleshooting in the area you’re concerned about. I would check to make sure they used 12Ga wire and not 14Ga. Considering the math adds up they should be able to handle it. I have more faith in the math than most contractors that don’t care (or know) enough to to make sure installations are done properly or up to code.

[stever]

I run my router, laptop, cnc machine on one circuit. Shop vac on another circuit. I also have a 2 circuit UPS, one circuit for the cnc and laptop, one circuit for the router. I did this so that if there are ever any power failures I can at least keep the machine running long enough to hopefully finish a job or get to a good point to pause the job.

[garymkrieg]

Thanks everyone for their input, now I just have to wait for the machine to be shipped.

Gary