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Joined: Jul 2002
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When pulling cables through a conduit, what, if any, sort of lube do you use? What is the best sort of Lube?.
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Joined: Jun 2001
Posts: 642
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I use either a product called yellow 77 or polywater. Both work just fine cost is the deciding factor most of the time.
ed
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Joined: Aug 2002
Posts: 112
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we use a product called "aqua-gel". seems to work better than the old "yellow-77", and evaporates rather than getting sticky and "gluey" like the yellow-77. i have had to pull out cables such as MCM 250-500 before, that had been originally pulled with yellow-77, and they were stuck inside the pipe like super-glue, sometimes, nearly ripping the conduit down, just to get them to budge a little.
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Joined: Oct 2000
Posts: 5,392
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i owe someone a thank you in this forum, used thier trick of lube/mouse pull back and forth in 340' of 3" . the 350 URD triplex went like S#$! thru a goose! ~PS all my lube froze this week..... don't they sell a non-freezing kind???
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Joined: Jul 2002
Posts: 680
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Sparky Ideal makes a non freezing lube,(agua gel?) but the claim is like 30 degrees. Not much help in No New England, especially this year it seems . Mighty chilly already.
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Joined: Oct 2000
Posts: 2,749
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NEC Rule in Article 517: "Wire-pulling compounds that increase the dielectric constant shall not be used on the secondary conductors of the isolated power supply." www.nfpa.org Don't ever use axel grease!!! Fire Hazard!!! http://www.polywater.com/iwcs.html [This message has been edited by Joe Tedesco (edited 10-24-2002).]
Joe Tedesco, NEC Consultant
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Joined: Nov 2000
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The last hospital isolated power system that I worked on required the use of XHHW wires and only talc for lube if needed. This was in the design specs for the job. Don
Don(resqcapt19)
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Joined: Sep 2002
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Is talc allowed everywhere? I've never heard of using it as a pulling lube before. But I do remember being the young aprentice standing under the conduit and getting a shower of yellow goo. A few more years of therapy and I should be ofer it. ~
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Joined: Oct 2000
Posts: 2,749
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WIRE-PULLING COMPOUNDS (ZOKZ)
Wire-pulling compounds are for use as lubricants in installing electrical conductors in raceways. Listed compounds have been investigated to determine their compatibility with conductor insulation and coverings.
The Listing Mark of Underwriters Laboratories Inc. on the product is the only method provided by UL to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these products includes the UL symbol (as illustrated in the Introduction of this Direc-tory) together with the word ²LISTED,² a control number, and the product name ‘‘Wire Pulling Compound’’ .
Joe Tedesco, NEC Consultant
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Joined: Nov 2000
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Here is part of the installation instructions from the PostGlover website. They are a manufacturer of hospital isolated power systems. All Branch Circuit Conductors of the isolated power system shall be stranded copper having a cross-linked polyethylene insulation, or equivalent with a dielectric constant of 3.5 or less. Type XHHW is suitable for this purpose. Each branch circuit conductor shall be color-coded in accordance with National Electrical Code. Wire pulling compound produces an adverse effect upon the dielectric constant of conductor insulation and shall not be used when pulling the wire of the isolated power system. Use of dry talcum powder is permitted. PostGlover Isolated Power Panel Don [This message has been edited by resqcapt19 (edited 10-24-2002).]
Don(resqcapt19)
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Posts: 44
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