Dick wrote:
Thanks for your reply Toller. The box is plastic but the outlet (to which
the switch & the diposer are connected) is grounded & downstream of a GFI
protected outlet in the circuit.
"Toller" wrote in message
...

If you have a plastic box and a metal cover plate, then the switch must
be grounded (so in case of a fault, the cover plate won't become
energized). Even if you are using a non-metallic cover plate, I would
still ground the switch in case someone in the future changes the cover
plate to metal.

Also, as Toller said, if you are having trouble fitting all the wires
in, your junction box may be too small. You need to make sure you
don't have a box fill violation. Read this:

http://www.taunton.com/finehomebuild...ges/h00134.asp

Ken