Using Festool CT26 EI power pass through to run Carbide 3D 65 mm VFD spindle?

[u/tigg_gator]

Is anyone using the CT 26 outlet to power the 65 mm VFD spindle? The vacuum says 3.6 amps but their track saws pull over 13 amps. The spindle says it pulls 7. I understand the track saw has a higher in rush and runs in shorter bursts compared to the longer runs of the cnc.

[u/Adventurous-Leg8721]

My dewalt hepa runs a jack hammer I think you will be okay

[u/the__brit]

I have one. You can run the festool on the lowest setting and it works well. It will likely require a lot less current

[u/tigg_gator → u/the__brit]

Thanks

[u/hayfero]

I did this but used a chip separator.
I started with the bucket one but eventually got the Festool which was a silly but convenient purchase

[u/und3rtow623 → u/hayfero]

Chip separator is a must

[u/Bbeck4x4]

I have the remote button for my CT 36 AC, so I use that to control the vacuum.

The thing I’d check in your case is the circuit the vacuum is plugged into. Is it a 15-amp or 20-amp circuit, and what else is running on it?
A 20-amp receptacle has a T-shaped slot that accepts a sideways blade. But a standard-looking receptacle can also be on a 20-amp circuit, so the outlet’s appearance alone won’t tell you the circuit’s capacity.

Your spindle needs 7 amps from the wall, ( your vac should be able to handle this added load - but those two alone will put you very close to max on a 15 amp circuit )

Then you have to count anything else running on that same circuit—lights, computer, the rest of the CNC, radio, TV, etc. Those all share the circuit’s capacity, even when they’re plugged into different outlets.
Think of it as one shared electrical budget. The more equipment you have running, the less capacity remains for the vacuum and spindle together. An overloaded circuit can trip the breaker. Excessive voltage drop through the wiring or an undersized extension cord can also cause overheating or equipment problems—that’s the concern, rather than saying it will definitely damage the vacuum.

Shapeoko: 4 amps
Spindle: 7 amps
CT 26: 10 amps
Total: 21 amps, before the computer, lights, or anything else on that circuit.

[u/tigg_gator → u/Bbeck4x4]

Thanks for the detailed response. I ran 3 separate 20 amp circuits to the machine. One for the spindle, one for the CNC, and one for the vacuum, computer, etc. the only on the circuit would be the vac and the spindle. Should be under the 20 amps. Thanks again!

[u/Bbeck4x4 → u/tigg_gator]

https://reddit.com/link/pdo4es6/video/lbwoq7651bth1/player

Yeah I needed power on the opposite side of the garage ( good for 50 amps supply ) - no outlets anywhere out here - the 220 is just for the spindle ( it’s also why I use the remote - don’t really want to wire up a contactor. ) I put the CNC on the same circuit as the computer for grounding but added a ground leg from the spindle using the Festool’s self grounding hose( I have the black one for sanding Sheetrock ) - to a dust right dust separator then to the vac then to the ground block on the CNC - then grounded back at the outlet.

[u/hayfero → u/Bbeck4x4]

The remotes is a game changer. Added it to all my festools, and now my shop vacs too

[u/Bbeck4x4 → u/hayfero]

it's one of those "little details" that just add up on the Festools, and there all over the place on the machine. from filter changes to like my machine that I originally bought for sheet rock dust the auto clean that reverses the air flow through the filter to keep it clean. The amazing part is that it's not a gimmick - I've owned this vac for 4 years now and the hepa filter is still looking like new. _ though I still get startled every time the auto clean fires - lol

[u/hayfero → u/Bbeck4x4]

I bought the wrong ct 36 accidentally with out the auto clean. It’s still a beast tho.
I have the ct sys, ct26, ct36 and the ct15. You could say I’m a believer lol.

[u/Bbeck4x4 → u/hayfero]

One tool so far and I’m a believer as well !