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 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 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