What exactly is a wire tuck?

How do you wire up 2 120V strands into a 240V if the 3-prong receptacle has 2 hots and a neutral but no place for the grounds and should you just wirenut the grounds and tuck them in the box?

• Answer:

  It sounds like you're trying to wire up a dryer or an oven. Your old appliance has an old 3 wire cord and your home has a 4 wire plug. If you downgrade that plug your home no longer meets code. Put the new outlet back and install a modern cord on the appliance. New 4 prong plugs are required for new work. What you're suggesting is dangerous and violates the National Electrical Code and can cause you some serious problems with the insurance company, building department and fire department if the house catches fire and you're caught. Use the proper wire, breakers, plugs and outlets for the application. It's not that much more expensive and everything will work properly when you're done.