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Power requirement for powermatic 15hh

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Forum topic by john_cristiano posted 04-06-2019 01:24 AM 411 views 0 times favorited 8 replies Add to Favorites Watch
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john_cristiano

10 posts in 1077 days


04-06-2019 01:24 AM

I am considering the purchase of this planer and have a question – can I run this machine on a 20A (220) circuit?

The manual states that the circuit minimum is 30A, but the motor is listed at 15A. I already have a 20A circuit run for my table saw and will only use 1 machine at a time. I just don’t understand why a 30A is needed.

I figure here are my options:

1. Look for a different planer that meets my requirements

2. Change breaker to 30A, change wire to #10 and change outlet/male pugs to 30A that will be used for both machines.

3. Change nothing. Add the 20A male plug to the 15hh and move on with hopes of no problems.

I do not have the capacity in my subpanel to add the 30A circuit and leave the existing 20A circuit.

What are your thoughts?

TIA


8 replies so far

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Aj2

2529 posts in 2333 days


#1 posted 04-06-2019 01:31 AM

I run mine on a 30 amp circuit. You might get by on a 20 amp until you decide to take a full depth full width pass on something very dense. Hardmaple or bulbinga then you’ll find out why.
Helical inserts have a 30 degree face bevel so it’s a really demanding scraping cut. Plus carbide isn’t known for its sharpness.

-- Aj

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Sawdust35

68 posts in 1397 days


#2 posted 04-06-2019 01:47 AM

OP-
I have the Jet 15HH. Bought it in 2017. I would suggest option #2 from your list. My jointer and planer use the same 30amp 220V powered outlet. One is plugged in at a time.

If you want a 15” or larger planer, not sure if new models can reliably run on less than 220V-30amp circuit.

Not sure if electrical codes allow, but maybe you can wire up two 30amp outlets in parallel (like residential 110V outlets)?

Matt Cremona did a shelix head install on his 20” grizzly and saw a jump in amperage draw compared to the original straight knife head. https://m.youtube.com/watch?v=3JLRMwxg1Z4

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ocean

186 posts in 1368 days


#3 posted 04-06-2019 02:03 AM

Starting load may be the problem for a 20amp circuit. Starting over and over with a problem then bang – burned wires – broken breaker. Bite the bullet and replace the whole circuit with the right wire size and outlet. Better than that maybe you should upgrade for the future. Are you going to add other tools? New box with a few more breaker slots. Then you are ready to grow without the hassle/danger of extension cords. Something to think about!

-- Bob, FL Keys

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BlueRidgeDog

499 posts in 314 days


#4 posted 04-06-2019 02:03 AM

My Griz 15” runs fine on a 20amp circuit that it shares with the table saw and 8” jointer. That is the rating required in the manual. Similar motor but I don’t have a spriral head. You can do option 3 without any issues as you won’t hurt the motor. If you find you trip the breaker under load, then you can go to option 3. That said if your shop is open and your panel close, running some #10 and putting in a breaker is an hour job and done.

FYI…if you trip the breaker, get the wood our before you throw it back on!

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john_cristiano

10 posts in 1077 days


#5 posted 04-06-2019 12:18 PM

Thanks all.

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Fred Hargis

5799 posts in 3028 days


#6 posted 04-06-2019 01:08 PM

I’m a little late here, but I’ve always run my Delta 3 HP with Shelix on 20 amps, and never had a problem. I would say try it on the 20 amp circuit and see how it goes. If it turns out you need a 30 amp setup deal with it later. For some reason several companies recommend the next circuit size up and it’s not really needed.

-- Our village hasn't lost it's idiot, he was elected to congress.

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CaptainKlutz

1938 posts in 2029 days


#7 posted 04-06-2019 04:26 PM

+1 Use 20A and don’t worry.
Have run older 15” Grizzly and Powermatic 3HP planers on 20A 220V breakers, and never had an issue. The spec sheets on old M#15 that I have and newer 15HH have same motor numbers. Unless the the new motors have significantly higher FLA rating, doubt will never see an issue.

-- I'm an engineer not a woodworker, but I can randomly find useful tools and furniture inside a pile of lumber!

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john_cristiano

10 posts in 1077 days


#8 posted 04-06-2019 05:32 PM

That’s exactly what I was thinking CaptainKlutz and Fred Hargis.

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