03-17-2008, 06:20 PM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
Posts: 3,671
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I don't know why people think for a 220 outlet you HAFTA use a three wire plus ground! One) its expensive, Two) there's a third wire you won't use, therefore it is wasted. Know your load capacities and buy the cable you need plus the outlet. 20 amp 220 use twelve two plus ground. 15 amp use fourteen two plus ground. All you need to do is tape a piece of black tape on the neutral (white) and you're all set to go! if the receptacle is a two wire with ground twist lock, use the two wire. three phase is almost always 3 pole four wire, the fourth wire is ground (not neutral)
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