What size breaker and wire do I need for a 3hp tablesaw?
What size breaker and wire do I need for a 3hp tablesaw?
20 amp breaker with 12 gauge wire should be fine
Brian E. Cosgrove
20A with 12 gauge... although personally I'd install a 30A with 10 gauge.
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Same as Dan, 20A w/ 12 gauge, but I'd just run 10 gauge and use 30A instead. That "future growth" lesson has been learned by every guy to ever wire up his woodshop, no reason for you to re-learn it youself
Here's a thread on motor wiring if you're interested in reading some NEC arcana to arrive at the same answer as above
Sizing Wires and circuit breakers for 3HP and 5HP shop motor circuits
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"Here's a thread on motor wiring if you're interested in reading some NEC arcana to arrive at the same answer as above"
I'll just go with what you guys said!
Thanks everyone!
I have a 20A with 12 gauge wire and every so often I will trip the breaker on start up, even though it says 18Amp max on the motor.
Not allowed
Derek,
Could be a failing breaker... I've had some that were junk straight out of the box (even had a GFCI socket that was junk straight out... took me a while to figure that one out).
Hi-Tec Designs, LLC -- Owner (and self-proclaimed LED guru )
Trotec 80W Speedy 300 laser w/everything
CAMaster Stinger CNC (25" x 36" x 5")
USCutter 24" LaserPoint Vinyl Cutter
Jet JWBS-18QT-3 18", 3HP bandsaw
Robust Beauty 25"x52" wood lathe w/everything
Jet BD-920W 9"x20" metal lathe
Delta 18-900L 18" drill press
Flame Polisher (ooooh, FIRE!)
Freeware: InkScape, Paint.NET, DoubleCAD XT
Paidware: Wacom Intuos4 (Large), CorelDRAW X5
What voltage?
3 HP, I think we would agree it has to be 220 volt.
I wired all my 220 plugs with 10 gauge, and 30 amp breakers. Wish I had run 8 guage to one of them on a 50 amp breaker for the welder, but I doubt it needs more than 30...if I ever learn to use it. Jim.
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I ran 10 gauge wire for all my 220V except one line of 8 gauge with a 50A on it (future welder or some odd big electric draw). All of the 10 gauge have 20A breakers except the Dayton heater which has a 30A. If I ever get a machine with greater than 3 hp, then I can add 30A breakers on my 10 guage wire.