On Sun, 25 Jul 2010 09:39:13 -0400, "RBM" wrote:


"Steve Barker" wrote in message
m...
On 7/25/2010 1:06 AM, Elmo wrote:
I just want advice for the conversion I just did before I plug it all in.

Details:
1. I have a two-phase 220V Sears Craftsman compressor which uses a 220
volt
plug with one blade sideways (otherwise it looks like a normal 120V
grounded plug).

2. I have no sockets in the house which fit that 220 volt plug.

3. I have a three-pronged dryer socket in the garage with 220 volts (two
hots and a neutral).

4. I just attached a new 3-pronged male dryer cord to a female 220 volt
plug with the one blade sideways.

Before I plug in the compressor to the recepticle to the dryer cord to
the
recepticle, would you have any concerns about safety or other?

I assumed the neutral in the compressor plug was the center wire (looks
like a ground pin) while I assumed the neutral on the 3-pronged dryer
cord
is the L-shaped center pin. Is that the correct assumption for the shared
neutral?

I'm suspecting that out of all these replies, NONE are correct. What i
suspect is that you have a 20a plug on a 120V compressor and you just
don't have any 20a 120v outlets in your house. Better look a little
closer at everything before you feed that unit 240v.

--
Steve Barker
remove the "not" from my address to email

Very good point. Most of these small compressors run 120 or 240 volts, and
do require a 20 amp plug @120 volt. It is entirely probable that the OP is
looking at a 20 amp 120 volt plug and not a 20 amp 240 volt plug, which are
very similar looking

If his copressor plug fits the 6-30R he bought, I strongly suspect
your suspicion is wrong.