Old Methane Gas Cloud
Join Date: Jun 2009
Location: Huntington Beach, California
This is probably not according to code, however it would be safe.
In your 240 V outlet there must be 4 wires:
Green or bare = ground
Black = Phase A
Red (Or a white wire marked with a sharpie or tape) = Phase B
White = neutral
If the 240 V outlet is intended for a clothes dryer, the white wire is probably not there. If there is no neutral, you're out of luck.
Assuming that the wires are all there, get some romex, 12 gage, 3 conductor with ground. (Probably Black Red White and bare) Run this into a double duplex box. In the 240 V outlet, connect the black to black, red to red, white to white and bare to green.
In the double box, install two outlets. Using a white wire, connect the silver screws of each outlet together. Connect the white wire from the new romex to one of the silver screws on either of the outlets. Connect the bare wire from the new romex to the green screw on one of the outlets and continue the wire over to the other outlet ground screw. Connect the black wire to one outlet gold screw. Connect the red wire to the other outlet gold screw.
You now have two 20 Amp 120 V outlets. They may be used simultaneously.
Use the right tool for the job.
Rich (Tilting right)
Huntington Beach, California
Remember that when we have the "BIG ONE" everything east of the Rockies falls into the ocean.