The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
Earthquake in New Zeeland
by RODALCO
11/27/16 11:25 PM
Calling all Non-US members!! (Non-US only)
by Tjia1981
11/27/16 06:33 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 9
Texas_Ranger 8
Trumpy 8
sparkyinak 7
Who's Online
0 registered (), 99 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#206242 - 06/08/12 03:49 PM Non-watertight fittings in shielded locations
wewire2 Offline
Member

Registered: 11/14/02
Posts: 246
Loc: California
What do you guys think about this... Bridgeport makes a line of conduit fittings that used to be U.L. listed as being watertight. Should an inspector have an issue with installing a compression type connector like this outdoors on a conduit riser that is entering the bottom of a panel where it is shielded from direct rain? This might be a trick question...
Why do I ask???
3" diecast Bridgeport EMT/IMC/Rigid connector = $15.
3" Rigid connector = $130 - $180.

Top
2014 / 2011 NEC & Related Books and Study Guides
#206244 - 06/09/12 02:27 AM Re: Non-watertight fittings in shielded locations [Re: wewire2]
Tesla Offline
Member

Registered: 06/16/04
Posts: 1280
Loc: Sacramento, CA
Are you referring to a 'Myers hub' as your Rigid connector?

======

I've never seen diecast connectors ever given a RT listing. Steel, yes.

The newer RT connectors don't differ much: just an additional seal, AFAIK.

I've seen inspectors tolerate Greenfield/ flex ( not Sealtite ) for THWN-2 taps to HVAC condensers -- in residential situations.

In which case, might D.C. S.S. connectors also pass for your application?

BTW, at 3", DCSS fit both RMC/IMC and EMT.
_________________________
Tesla

Top
#206245 - 06/09/12 12:39 PM Re: Non-watertight fittings in shielded locations [Re: Tesla]
wewire2 Offline
Member

Registered: 11/14/02
Posts: 246
Loc: California
The connector is a 3" D.C. compression connector that fits EMT/IMC/RGS and is the older style without plastic gaskets.
Since the fitting is under the panel it would be at most an
occasional damp location. I was wondering if would be code compliant to use the die-cast fitting since it is placed so as to prevent moisture from entering. 314.15 only addresses wet locations as far as the U.L. listing requirement is concerned. BTW, The rigid is being used to thwart copper thieves and is overkill for conductor protection in this case.

Top
#206246 - 06/10/12 12:27 PM Re: Non-watertight fittings in shielded locations [Re: wewire2]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6804
Loc: Brick, NJ USA
Sounds like the local AHJ determines if the underside of the panel requires a watertite connector or not.

Based on his decission, that would be your answer.

Asking him before you spend $$$.
_________________________
John

Top
#206247 - 06/10/12 01:19 PM Re: Non-watertight fittings in shielded locations [Re: HotLine1]
wewire2 Offline
Member

Registered: 11/14/02
Posts: 246
Loc: California
Good advice. I tried calling a couple times but couldn't get through. Double locknut threaded rigid connections under a panel or box outside never seem to raise an eyebrow. The meter panels have weep holes in them anyways so it shouldn't be an issue.

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals