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Banks

Member

182

Jul 14th 2019, 15:25:54

I bought a bridgeport mill with a 1hp 3 phase motor. It is currently hooked up to 480 volts.

I have 220v feed into my garage. Will a rotory phase converter with a 220v input give me the power to run this mill? Or do I need to have a 480v feed ran to the garage?
If 480v feed, do the electric lines running to the house have to be upgraded?

Mr Gainsboro

Member

934

Jul 18th 2019, 9:29:25

sell the house and move to Sweden, you can borrow electricity from me :)
Don of LaF

Gerdler

Member

2120

Jul 19th 2019, 0:25:11

Maybe a Graetz bridge from a standard 220v feed will do? 1hp is nothing. I dont see why it would need 3 phase or 480v.
This would be ~0.75 kW which is about half of what my coffee maker pulls. :P

Also why are you saying hp? Electrical motors are usually in watts or kilowatts or megawatts.

Bug

Developer

448

Jul 19th 2019, 11:53:50

Gerd, Banks is American i believe.. they cant do anything normal.

Also a Bridgeport will require 3phase for it to work, yes mostly needing 480v a rotary converter can work but for extended time/life you will need new wiring from the pole.. and a new bill from the company.

You would almost be better off replacing the 3phase parts with single phase ones or finding 220v equivalent that way you don't need to change your garage.

Banks

Member

182

Jul 21st 2019, 12:27:43

Gerd, What Bug said.. American :)

Bug, They sell a kit to convert to 1 phase, but there you are taxed with lower torque and lower speeds. Also, there is some modifications to the spindle bore and keyway for it to work, none of which I am interested in doing. A 220v version is also not as robust as the 480v version.

Re-wiring the garage for 480V is an option as I am also picking up a lathe and a surface grinder. This really comes down to adding more breaker boxes and digging a trench from the house to the garage (after I already put in a new patio and its in the path).

Marshal

Member

30,840

Jul 21st 2019, 14:52:36

What I want to know is what your wife is gonna say?
Patience: Yep, I'm with ELK and Marshal.

ELKronos: Patty is more hairy.

Galleri: Sadly pics of my boobies are on my ftp-folder.

LadyGrizz boobies is fine

NOW3P: Morwen is a much harsher mistress than boredom....

Banks

Member

182

Jul 21st 2019, 15:19:42

She is used to it. I got more crap for coming home with the ZL1 than a machine tool. So this is nothing lol

Marshal

Member

30,840

Jul 21st 2019, 15:47:24

I meant after you destroy her patio.
Patience: Yep, I'm with ELK and Marshal.

ELKronos: Patty is more hairy.

Galleri: Sadly pics of my boobies are on my ftp-folder.

LadyGrizz boobies is fine

NOW3P: Morwen is a much harsher mistress than boredom....

Banks

Member

182

Jul 21st 2019, 20:01:33

Yes, and I just finished it last week