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PVC conduit fittings outdoors? Percival P. Cassidy 07-04-2007
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Posted by Percival P. Cassidy on July 4, 2007, 1:05 pm
Is it kosher according to the NEC to use such PVC conduit fittings as
pull elbows and LB conduit bodies outdoors on a 220-volt circuit? The
ones I have are not marked as being suitable for wet locations. Are
there some that are so marked?

If I can't use such fittings, how do I make 90-degree bends and T-joints
and also route conduit through a (wood) fence from one side to the other?

Perce

Posted by RBM on July 4, 2007, 1:22 pm
Yes, PVC and it's associated fittings can be used in wet locations. Be sure
the conductors you use inside the PVC are rated for wet locations as well



> Is it kosher according to the NEC to use such PVC conduit fittings as pull
> elbows and LB conduit bodies outdoors on a 220-volt circuit? The ones I
> have are not marked as being suitable for wet locations. Are there some
> that are so marked?
>
> If I can't use such fittings, how do I make 90-degree bends and T-joints
> and also route conduit through a (wood) fence from one side to the other?
>
> Perce



Posted by DerbyDad03 on July 4, 2007, 1:22 pm
> Is it kosher according to the NEC to use such PVC conduit fittings as
> pull elbows and LB conduit bodies outdoors on a 220-volt circuit? The
> ones I have are not marked as being suitable for wet locations. Are
> there some that are so marked?
>
> If I can't use such fittings, how do I make 90-degree bends and T-joints
> and also route conduit through a (wood) fence from one side to the other?
>
> Perce

Any borg or electrical supply house will carry PVC conduit
specifically designed for exterior use. It'll be UF rated, water
proof, etc. It's usually grey. Look in the electrical section of a
borg, not the plumbing section. T'hey'll also have all the fittings
and connectors you need, including connectors that will allow you to
make turns and to connect the PVC to metal boxes. You'll need to pick
up special glue for this type of PVC.


Posted by Percival P. Cassidy on July 4, 2007, 1:42 pm
On 07/04/07 01:22 pm DerbyDad03 wrote:

>> Is it kosher according to the NEC to use such PVC conduit fittings as
>> pull elbows and LB conduit bodies outdoors on a 220-volt circuit? The
>> ones I have are not marked as being suitable for wet locations. Are
>> there some that are so marked?
>>
>> If I can't use such fittings, how do I make 90-degree bends and T-joints
>> and also route conduit through a (wood) fence from one side to the other?

> Any borg or electrical supply house will carry PVC conduit
> specifically designed for exterior use. It'll be UF rated, water
> proof, etc. It's usually grey. Look in the electrical section of a
> borg, not the plumbing section. T'hey'll also have all the fittings
> and connectors you need, including connectors that will allow you to
> make turns and to connect the PVC to metal boxes. You'll need to pick
> up special glue for this type of PVC.

I have the ordinary grey "Carlon" brand PVC conduit and fittings I was
intending to use (and the primer and cement), but then I read a claim
that for use in "wet locations" (which surely includes anywhere outside
-- but also underground, I understand) the fittings must be so marked.
The diecast metal outlet boxes I bought *are* so marked, so that made me
think that the other fittings are *not* OK for outdoor use.

Perce

Posted by dpb on July 4, 2007, 1:49 pm
Percival P. Cassidy wrote:
...

> I have the ordinary grey "Carlon" brand PVC conduit and fittings I was
> intending to use (and the primer and cement), but then I read a claim
> that for use in "wet locations" (which surely includes anywhere outside
> -- but also underground, I understand) the fittings must be so marked.
> The diecast metal outlet boxes I bought *are* so marked, so that made me
> think that the other fittings are *not* OK for outdoor use.

If they are exterior-rated, that would normally be expected to be noted
if there is any actual rating stamped on them. How are they marked? Is
there a part number to verify against?

--

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