Dedicated circuit sizing

Aaron

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2023-07-24

Ok, so I recently bought a new home and have moved my laser (60w Chinese omtech) to the utility room. The use is the only outlets in the room are for the sump pump.

Bummer…
So I am going to run new wiring for a dedicated circuit for the laser and laser equipment. I’m not sure between 15 or 20 amp circuit breaker and wiring. The circuit will have the laser, a laptop, and possibly an air compressor for air assist (though that may end up on a different circuit of outside with a blower for the fume removal). I’m thinking 20 Amp would be the best, but obviously that comes with a higher cost. Also, I’m unsure if I should use a GFCI/AFCI circuit breaker or just a standard breaker.

Thought or suggestions are greatly appreciated.

Darren

2023-07-25

"possibly an air compressor"
While you’re snaking wires, run two of them and put the compressor on a separate breaker. The additional impedance of two wire runs will (tend to) tamp down the horrible spikes caused when the compressor motor kicks in and save your sanity later on.

"obviously that comes with a higher cost"
The only difference will be a run of 12 AWG wire vs 14 AWG, as everything else costs about the same. A quick check says 250 feet of 12/2 is $140 vs $110 for 14/2: whatever you’re paying for labor will swamp the difference.

"use a GFCI/AFCI circuit breaker"
That will likely be determined by Your Local Codes, rather than anything sensible.

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