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.
>
>
>
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