It is a little tricky, but it is possible to remove the existing one gang
plastic box and install a two gang plastic box without making a mess out of
the drywall. That dryer receptacle should fit nicely on a two gang box.

Get a two gang plastic old work box. Put it up to the existing box and mark
out the additional opening needed in the drywall to accommodate the two gang
box. Cut out the opening in the drywall.

Next get a big flat head screw driver and a nice pair of diagonal pliers.
Gingerly wedge the screwdriver between the existing box and the wooden stud
that it is nailed to. Move the screwdriver from the upper part of the box
to the lower part of the box and back again each time firmly applying some
force to separate the box from the stud. When you get enough space between
the box and the wall stud (Approximately 1") use the diagonal pliers to cut
the nails close to the box. The box should now be swinging freely in the
wall. Use pliers to remove the remaining nails from the wall stud.
Straighten out the wires and remove them from the box. You can try and
remove the box from the wall or just let it fall inside to be buried inside
the wall forever.

You may need to remove a cable staple or two near the existing box to gain
some slack and flexibility with the existing cable. Use a long thin
screwdriver for this and a pair of pliers.

Check to make sure that the new two gang old work box fits in the new hole.
If not then cut out some more for a good fit.

Next straighten out the wires as much as possible. The larger the wires,
the more difficult they will be to get into the new box. Push the wires
part way into the box as you insert the box into the wall. Little by little
push and pull the wires into the box as you continue to push the box into
the wall. Your hands will get tired quickly so take your time.

When the box is fully inside the wall and the wires are completely in the
box you can straighten the box out and set the securing wings to fasten the
box to the drywall. For extra strength I like to shoot one drywall or #8 x
1-1/4" sheet metal screw through the middle of the side of the plastic box
into the wall stud.

Wire up the outlet and use a two gang cover for a dryer outlet to finish it
off. I'm not sure if Home depot sells these, but they are readily available
at an electrical supply house. If a standard size cover doesn't completely
cover the opening in the drywall, you can order a midsize or a king size
from the supply house.


John Grabowski
http://www.mrelectrician.tv



"Nick C Topolos" wrote in message
...
We just received a new stackable washer and dryer. I wanted to use a 4
prong plug and the installer installed a 4 prong pigtail in the dryer. I
then bought a new receptacle which I found is 2 1/4" wide to fit in a 2"
wide box. Is there a more narrow receptacle available? Or what is an
easy way to remove the existing box? It is plastic. I have a blue old
work box with the fold out tabs but I think it would be too flimsy for
the 240V plug. Thank you