Dec 16, 2010 · It's usually 3" Sch. 80 underground with concrete handholes every 150' or thereabouts and after we pull the wire in we go behind and put a duct seal patty over the ends of the pipe in the handholes. I've only personally done it once but the traffic foreman told me it was more of a state requirement than a NEC requirement.

Jul 4, 2013 · Duct Seal Compound Seals conduit openings against drafts, dust, moisture • Protects terminal boxes, pot ...

Jul 19, 2019 · I have a commercial building with the main disconnect in the basement. The underground conduit fills with water and soaks the inside of the disconnect, particularly during spring thaw. The idea is to put in Polywater FST-250 foam but there’s a problem. A previous electrician stuffed it full of a humongous amount of duct seal.

Sep 30, 2021 · Would you guys seal the inside of this conduit? Typically a pipe would come up out of the ground (from another building or a remote pump station) and would run up the wall into a box or lb. Then through the wall into another box or lb most of the time. It would be easy enough to shove some duct seal in one end of the pipe.

May 4, 2019 · Duct seal is good for stopping drafts in a conduit and that is it. All other places it dries out and falls off. I have seen many services have water problems because the guy that did them used duct seal instead of silicone. Sent from my Moto Z (2) using Tapatalk

Oct 28, 2019 · I got a call to seal some 4" conduit at the transformer pad thats located on the clients residential property. This home has a 600 amp service. The transformer pad has been filling with water when it rains heavily and actually filling the feeder conduits.

Mar 9, 2020 · Recently had a complaint about a water leaking from conduit in a tele data room. Conduit comes though building from outside (LB on other side of wall) and was full of water. No sealant. other conduit run just ran straight through, no …

May 3, 2019 · This product will work for a conduit that is already leaking, or as a preventative method should water ever enter a conduit sometime in the future. Reactions: The_Modifier , samgregger , wcord and 1 other person

Apr 24, 2011 · Arlington Industries, Inc. Duct Seal Compound. Has greater adhesion properties for sealing around service entries, junction boxes, flashings and service mast conduit. Use indoor or outdoor where a per- manently soft non-staining sealer is required to seal out weather, moisture, dust and atmospheric conditions. ARLINGTON INDUSTRIES, INC.

Aug 23, 2013 · Yes, seal both ends of service conduit(LB and Panel) to ensure no condensation in panel. As for drainage, drill 1/8 or 1/4 holes in base of LB just in case water gets inside your raceway. Save Share