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How can one use a 3 phase wood lathe in a residential area where single phase power supplied. Have 50 amp breaker supply to shop. What is required to hook up 3 phase Centauro TC 1200 (Italian wood lathe) in this situation.

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You need a phase converter. The link below is a a selection from Grizzly. You can also find them on e-bay. There are two types - static (no moving parts) and rotary (much more expensive). The rotary type give you full performance delivering true 3-phase power to your machine. But for a minor loss in power (maybe 20%) the static type does the job quite well - assuming you don't need all of the power that your 3-phase motor can deliver. Here's the link: http://www.grizzly.com/products/category.aspx?key=275030
good luck. Vote if you found this helpful. Al K

Posted on Sep 09, 2010

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I have a 440v 50 amp and a 220v 30amp main breaker box outside my house. the 440 goez to the inside of the house and i have to unplug the 440 and plug in myown 440 plug i connected to another breaker box...


Some of these numbers don't make sense?
I have Never heard of 440v and 220v in a residential application, they are two different systems, 480 volt is typically 3 phase power, and 240v is typically single phase, more in likely you have a 200- 400 amp main service, and a 100- 200 amp secondary service for the welder, that can't be 110 @ 200 amps?
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I have 110 volts n each leg but not 220 across both why??


In a traditional North American residential electrical panel (120/240 volt, single phase), installing a single width or single pole circuit breaker, you would expect to read 120 volts from the breaker terminal screw to either ground or neutral. A double width or double pole breaker would provide 120 volts from either of the breaker terminal screws to ground or neutral AND it will provide 240 volts BETWEEN the TWO breaker terminals.

A single-width circuit breaker case that contains two handles is NOT a two pole circuit breaker (these are called "tandem" or "1/2 size" breakers). This is because a single width breaker engages only one "line" in the panel. A double width breaker will engage 2 "lines" as a triple width breaker would engage 3 "lines" of a 3 phase panel. A single wide breaker can not physically engage more than 1 "line" so it will never be able to pass 240 volts.

You must install a double width / double pole breaker to safely supply a 240 volt circuit / device.

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4 wires is typical of 3-phase service, but typical trailer usually has single-phase residential service.
Copy following link to see main breaker box and component parts for single-phase residential wiring.
http://waterheatertimer.org/See-inside-main-breaker-box.html

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How to convert the aircondition tanage in amp


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all these require two breakers, and both breakers should be joined together.

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How can i get single phase power from my 3 phase generator


I have not wire this myself
Wiki says under heading of single-phase:
http://en.wikipedia.org/wiki/Three-phase_electric_power
Single-phase loads may be connected to a three-phase system in two ways. A load may be connected across two of the three phase conductors or a load can be connected from a live phase conductor to the system neutral. Single-phase loads should be distributed evenly between the phases of the three-phase system for efficient use of the supply transformer and supply conductors. Where the line-to-neutral voltage is a standard utilization voltage (for example in a 230 V/400 V system), individual single-phase utility customers or loads may each be connected to a different phase of the supply. Where the line-to-neutral voltage is not a common utilization voltage, for example in a 347/600 V system, single-phase loads must be supplied by individual step-down transformers.

So it sounds like you take 2 legs of the 3-phase.
or
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I would put a meter on that circuit before hooking up my power saw.

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On a 120/240Volt single phase system is:

Black = 1st phase
Red = 2nd phase
White = neutral
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Power supply


What is your price range ?

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