Electrical???

[Gibbcutter]

Currently I power my table saw and jointer on a 240 volt breaker with 12 gauge wire. Both are 3HP motors.

Can I run a single phase 5HP 240 volt grizzly jointer on the same line?

[Phil Thien]

I think you're going to need at least 10-AWG wire and a 30A breaker for that thing.

[Ohio Mike]

If you go to the Grizzly web site, the jointer you are considering will have a SPECIFICATION SHEET you can click on.  It will list the recommended circuit breaker size.

I think you'll find that Phil is correct - a 30 amp circuit is usually recommended for a 5hp tool.

[TDKPE]

Grizzly's current offerings only include two jointers with 5 hp single-phase motors.  One shows 19A, and the other is 25A.

30A is fine for the lower current unit, even though the NEC requires 28A design current at 230V single-phase for a 5 hp motor (for wiring and disconnects, not for overload protection).  30A is probably fine for the 25A motor*, but technically it should be on a 35A circuit if it is.

Barring unforeseen information to the contrary, I'd just run a 30A circuit on 10-gauge copper and go to work.

*Asian motors tend to the high end of the NEC motor current range, as a general rule.

[Gibbcutter]

I currently have a double pole 240 volt breaker coded 20 amps. Grizzly’s specs call for 30 amps and 12 gauge wire. Could I merely just replace the breaker? Also, do I need a double pole 30 amp breaker and if I put in a separate line do I need 10 gauge wire?

Thanks.

[RPE1]

I currently have a double pole 240 volt breaker coded 20 amps. Grizzly’s specs call for 30 amps and 12 gauge wire. Could I merely just replace the breaker?  Also, do I need a double pole 30 amp breaker and if I put in a separate line do I need 10 gauge wire?

Thanks.

No,  to your first question.  You need to replace the wire too.  You'll generate heat trying to pull 25 amps through a 12ga wire.  The breaker determines the wire size.
Second question.  Yes, 230 volts requires a two pole breaker.  Yes you need 10 ga wire.

[Gibbcutter]

I’m be using a 2 pole 30 amp breaker running 10 gauge wire. Any problems if the distance between the electrical panel and the outlet is 65’?

[TDKPE]

Let's see - 1.25 ohms/1000 ft (approx) and a round-trip distance of 2 x 65 ft is 0.16 ohms.  24A (80% of 30A for motor loads)  Using the full circuit rating since I don't remember what your actual motor rated current is, 30A x 0.16 ohms is 4.8 volts dropped over that distance, not counting machine cord and feeder or service cabling to the panel.  4.8V/240V x 100% is 2% voltage drop.  Or, 240V - 4.8V = 235V.  Well within the -10% allowable (216V) at the utilization equipment (-5% for the utility, and another -5% for the feeder and branch circuits), assuming you actually have 240V to start with.  But even if the utility is sagging to the -5% limit of 228V, you're still less than -5% for the feeder (if present) and branch circuit at 223V.

I'd say you're good to go.  

[Gibbcutter]

Little trouble with the detailed analysis but I understood the punchline.

Thanks.