The receptacle you show looks to me a NEMA 220v 20 amp receptacle,
reference:
http://www.et-sales.com/Documents/Straight%20Blade%20Nema%20Chart.htm
The red and black wires shown are the LINE hot leads. Each one
should be wired to a separate breaker in your panel and those two
breakers should be in a single block or have their toggles wired
together. I would expect these breakers to be labeled 20. If
they are truly 50 amps, the breakers could be changed to provide
better protection to the motor. The white wire shown should go to
ground in your panel.
In your wiring diagram, it shows lugs 2 and 4 to be LINE. If you
can maintain the same color code as the receptacle, you would hook
red and black to 2 and 4, it does not matter which is which. 220
does not need neutral. There may be a lug for ground and/or it
would be typical to crimp on a wire fork or ring to install under
a case screw on the motor. This ground can be passed on to the
compressor frame, the pressure regulator, etc. These lugs are
already tied to the pressure regulator with the white and black
leads in the black cord.
I can't read the writing on your pressure regulator block. I
would bet that the existing white and black say LOAD. There
should be two more wire slots that say LINE. These would
correspond to the incoming LINE wires of your new cord that will
hook to the red and black at the existing receptacle. I would
bring the existing receptacle white/ground to the regulator and
terminate in the case clip shown.
(top posted for your convenience)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Keep the whole world singing . . . .
DanG (remove the sevens)
"Thomas & Paige" wrote in message
...
I have an old Craftsman Twin Cylinder air compressor that has no
plug/cord wired in at the moment. I need to learn the correct
wiring
procedure in order to connect this 230V motor to my existing
50amp 250V
plug in my garage. The house was built in the 60's and all the
wiring
is original. Therefore, I have provided pictures of each
component in
question, sorry you have to cut and paste.
First here are pictures of the existing 50amp 250V Plug in my
garage.
http://i10.photobucket.com/albums/a1...g/IMG_0335.jpg
http://i10.photobucket.com/albums/a1...g/IMG_0352.jpg
Second are pictures of the compressor and its' motor face plate,
wiring, and wiring diagram.
http://i10.photobucket.com/albums/a1...g/IMG_0336.jpg
http://i10.photobucket.com/albums/a1...g/IMG_0355.jpg
http://i10.photobucket.com/albums/a1...g/IMG_0349.jpg
http://i10.photobucket.com/albums/a1...ingDiagram.jpg
Third is a picture of the wiring block on the compressor.
http://i10.photobucket.com/albums/a1...g/IMG_0337.jpg
My intentions are to purchase a NEMA 10-50P and 10ft of 12-3
power Cord
and simply wire the Red and Black wire to the two terminals on
the
wiring block. Leaving the white wire disconnected. Is this the
proper
thing to do or am I going to cause some sort of electrical
hazard? The
red and black are my two hot wires right? By the way where is a
good
place to look for the 10-50P, I have tried my local Home Depot
and
Lowes but they don't carry them. Any help would be greatly
appreciated.
Thomas