I am wiring a SPA and have a manufacturer supplied subpanel. The
contractor prewired my 230v connection to a flush, plastic, double gang
with a plain metal cover on it. I need to run the wiring from the gang box
to the subpanel using three quarter inch weatherproof plastic conduit. I
can't find an appropriate connection to attach the conduit to the face of
the gang box. I have some right angle and straight weatherproof fittings,
but I can't find an appropriate face plate to accept the fitting. I'm
thinking it would look like a plain faceplate with a three quarter inch
hole. What I have found is box covers that do not fit with half inch holes
in them. Does what I am looking for exist? Am I thinking about the
Thank you, Dan. Remove protection to reply.
If it was a one gang box in the wall I would suggest a RACO #5403-0
weatherproof extension adapter with 3/4" hubs. I can't find a two gang
version in RACO, Steel city, or Pass & Seymour.
You could use a blank cover with a hole suitable for 3/4" however if it is a
metal cover, it must be grounded. Also the splices would have to be
accessible without the removal of the conduit, wires, fittings, etc. You
could accomplish this by using a nylon two gang blank cover with a gasket
and make your own hole in it using a hole saw or unibit and a slow drill.
You would come out of the cover with a 3/4" angle fitting and connect to a
short piece of 3/4" liquidtight flexible nonmetallic conduit. The other end
of the flex connects to your 3/4" pvc using a straight fitting and a pvc
female adapter. Using the flex allows the cover to be removed without
having to take anything apart. Just be sure to leave enough slack in your
As John said, you could do it yourself but a 3/4" Uni-bit is a expensive
tool for a one-off. A hole-saw might work if you're careful.
I'd go to a electrical house and ask them directly. Apparently John already
researched that it's not readily available in a two-gang, but perhaps the
store or one of the electricians hanging around (go early in the morning and
they're there) will punch your blank for you. All good electricians are
going to have Greenlee knockout set around.
With the right tools.. it's about a 2 minute job and probably could be done
pretty cheap! If you're in central Indiana... let me know. I'll punch it for
you for free..
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