You can not plug a 120v plug into a 240v receptacle unless you
physically take a pair of pliers or something and bend.

If there is a neutral there you can change the receptacle out to a
120v receptacle but would also need to change the breaker to a single
pole breaker. Just have to figure out which hot to use.




Hello,

in my home are a few 240v outlets that used to serve air conditioners.
We now have a central air system, so those outlets are no longer
needed.

Can i leave the 240v outlets as is and plug any old device into them?
For instance, if i were to plug my alarm clock into that outlet, what
would happen?

How can iconvert them to 120v outlets? is it simply a matter of using
only one of the two hot wires to wire a new 15 or 20 am outlet?

thanks much