wolftat
Product Reviews Manager
I have a bandsaw that is running 230 volt single phase motor in it, my new shop is set up with 208v 3 phase electric, what do I have to do to make my machine compatible with the service?
Electrical question
- Thread starter wolftat
- Start date
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Mark
Member
Good Question. I took my bandsaw from 220 back to 110, just by changing the wiring around in the motor. I'm not sure going to three phase is that easy. Hopefully someone will answer shortly.
I'm very interested also. :biggrin:
I'm very interested also. :biggrin:
lorbay
Member
You can still run your 230v saw on 208v 3ph with no problem all you do is just use 2 of the phases. It will not be quite as powerful as the 230 and will require a few more amps, other than the amps I don't think you will notice a difference.
Lin.
Lin.
Rick_G
Member
Check with a local electrician he can get you a dedicated 220 circuit off the 3 phase system. Otherwise you will have to get a 3 phase motor to run it.
TurnaPen
Member
The electrician should be able to run a one phase point for you without too much trouble. Amos
I agree with Lin.
Any 'decent' motor can run at plus or minus 10% with only a moderate rise in current. If you don't run it for hours on end then you should be just fine. Get a sparky to connect it if you are not confident and take the blade off until you have confirmed the direction it runs. Be carefull.
Any 'decent' motor can run at plus or minus 10% with only a moderate rise in current. If you don't run it for hours on end then you should be just fine. Get a sparky to connect it if you are not confident and take the blade off until you have confirmed the direction it runs. Be carefull.
rej19
Member
I agree with lorbay on this one. Your situation is very common in industrial applications. You just need the appropriate size 2 pole breaker for your panel and the correct size wiring and you should be set.
NewLondon88
Local Chapter Leader
too bad it doesn't have a transformer and tap ..
even a dummy like me can figure those out..
even a dummy like me can figure those out..
It's a single phase set-up. There won't be any phase rotation to worry about.
I think Lorbay nailed it. This is a common problem with a common solution to use any (and only) two phases of the system. This results in 208V, single phase power. This is just a hair over 10% less than 240V.
JerrySambrook
Member
Bring it up to my house. I do not live THAT far away that you cannot come by once in a while and enjoy it 
jedgerton
Member
Make sure you measure the current consumed by the motor if you hook it up to a single phase at 208v. AC motors like to produce a fixed amount of power so when you lower the voltage, you increase the current. If the windings in the motor can't handle the higher current, you can have serious trouble.
I've seen multiple motors fail under brown out conditions when I worked with a power utility. Brown outs were typically controlled to better than 10% reduction but we would see motors begin to fail fairly frequently.
John
I've seen multiple motors fail under brown out conditions when I worked with a power utility. Brown outs were typically controlled to better than 10% reduction but we would see motors begin to fail fairly frequently.
John
wolftat
Product Reviews Manager
Thanks everyone, I spoke with the landlord and he is sending his electrician over to run all the wiring for me. He just saved me a bunch of money.