# Running a 2.4 amp/480v 3ph Chain hoist off 15amp/120v

#### eleysium

Joined Oct 13, 2018
1
Is this possible? 2.4*480 = 1152 watts which is possible through a 15amp 120 circuit but how do I get there? I can run a double breaker off my main panel to a subpanel and get the 220 single phase, but then what? Should I use a toroid transformer or something to get me from the 220 to 480 and then an electric motor to generate the 3 phase? Do they make phase converters that will just go from my 120 single phase to 480 3 phase? It's a CM lodestar 480v 3 phase 1 ton hoist if any of that matters.

#### drc_567

Joined Dec 29, 2008
1,156
Correct me if I'm wrong, but a three phase power device requires a factor of $$\sqrt{3}$$, making the hoist operate at about 2000 watts ... that could be the full load specification. The economics involved in 3 phase to single phase conversion may be a problem.

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#### shortbus

Joined Sep 30, 2009
9,949
You will need to change your motor to use this. Do you have a model number for the hoist? Some of them use a standard type motor that the shaft just goes into the main gear of the gear box. like a "c-frame" type motor. So you may not have to buy a motor from CM, that would be expensive.

Joined Jul 18, 2013
27,672
Is the motor optional 240/480?
If so a VFD ran off of 240 1ph for 3ph out.
Max.

#### recklessrog

Joined May 23, 2013
985
Take a look at this, I used a similar set up to run a brigeport milling machine and a colchester lathe for 6 years.

#### shortbus

Joined Sep 30, 2009
9,949
Take a look at this, I used a similar set up to run a brigeport milling machine and a colchester lathe for 6 years.
That or a VFD would work for him if the motor can be wired for 220. But like Max said, the motor needs to be able to run on 220 three phase, but the first post only states three phase 480. To my knowledge there is no way to increase the voltage from either a VFD or static convertor like you're using.