You absolutely should pop the case. Most equipment of that size doesn't come
with a line cord and most people just use what they have available. I'm
guessing that inside you will find the green wire attached to the cabinet
and there will probably be two black wires or a black and red wire for the
220V required.

Good luck
Roger

On Wed, Dec 9, 2009 at 10:03 PM, PICdude <picdude3@narwani.org> wrote:

> But the manufacturer says it's 220 single-phase, or optionally 220V
> 3-phase.
>
> I'm wondering if I can/should pop the case open to see if there's
> anything indicative.
>
> Cheers,
> -Neil.
>
>
> Quoting jim <jim@jpes.com>:
>
> >
> >
> >
> >
> > From: jim@jpes.com [mailto:jim@jpes.com]
> > Sent: Wednesday, December 09, 2009 5:22 PM
> > To: Microcontroller discussion list - Public.
> > Subject: RE: [EE] Oven wiring help
> >
> >
> >
> >
> >
> >
> >
> > PICDUDE,
> >
> >
> >
> > It appears to me that it is wired for 110V, not 220.  Black is the
> > HOT wire, White is NEUTRAL, and Green is SFAETY GROUND.    If it
> > were 220v, there would be a red wire in there too for the other 110v
> >  leg of the 220v line.
> >
> >
> >
> > Regards,
> >
> >
> >
> > Jim
> >
> >
> >
> >
> >
> >
> >
> > -------- Original Message --------
> > Subject: [EE] Oven wiring help
> > From: PICdude <picdude3@narwani.org>
> > Date: Wed, December 09, 2009 3:22 pm
> > To: piclist@mit.edu
> >
> > Hi all,
> >
> > Need some quick wiring assistance please...
> >
> > I recently picked up a used reflow oven (APS GF-12) and it does not
> > have a plug -- just 3 bare wires (12ga white, green and black). The
> > prev owner said it was hardwired and thinks it was 3-phase, but IIRC
> > 3-phase requires 4 wires... or not???
> >
> > I have 2 options for outlets here at the office...
> > (1) a Nema L6-30 ( http://www.ezdiyelectricity.com/?p=238 )
> > (2) Another similar outlet, but the prongs are in a smaller circle.
> > It says "Hubbell twist-lock 20A 250V plug".
> >
> > So I ask...
> > - Is this oven a single-phase oven? (APS only made these as 220V
> > single-phase or 220V 3-phase).
> > - Is there a standard for the colors on the plug wires?
> > - Is there any way to check the oven for the correct phase
> > requirements (resistance tests, etc) before I damage the oven?
> > - Are both of these outlets single phase?
> > - Which wires should I connect to which prongs on the plug? Assuming
> > these plugs are available quickly.
> >
> > Google hasn't yet given me any definitive answer. I have a few days
> > left on my DOA warranty, so need to test fast, and APS won't speak to
> > me unless I give them $2000 first.
> >
> > Much thanks,
> > -Neil.
> >
> >
> >
> > --
> > http://www.piclist.com <http://www.piclist.com/>  PIC/SX FAQ & list
> archive
> > View/change your membership options at
> > http://mailman.mit.edu/mailman/listinfo/piclist
> >
> > --
> > http://www.piclist.com PIC/SX FAQ & list archive
> > View/change your membership options at
> > http://mailman.mit.edu/mailman/listinfo/piclist
> >
>
>
>
>
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist