Champion Fiberglass® offers an overview of the specifications, benefits, and products designed to meet the requirements of below ground applications, including Encased Buried (EB) or Direct Buried (DB). Benefits of Champion Fiberglass RTRC vs. other in-market materials for below ground applications Compare Champion Fiberglass conduit to other underground conduit materials, and you’ll find that the benefits speak for themselves. Champion Fiberglass RTRC offers: The broadest range of corrosion resistance of all in-market underground ducting products. The lowest installation rates for most diameters for installing underground electrical conduit according to the National Electrical Contractors Association (NECA) Manual of Labor Units. Low burn through and ability to stand up to extreme conditions of underground conduit. Shape retention after impact or compression. FAQs—below ground applications, industries, and usage What is the difference between above ground and below ground conduit? The main difference is in fire resistance. Above ground conduit has fire resistance per UL2515 and CSA C22.2 No. 2515 standards, meaning that the conduit will self-extinguish within 15 seconds after each of five successive flame applications per the UL 2515 flame test standard. Below ground conduit meets UL94 HB (horizontal burn) requirements, which aren’t as stringent as vertical burn requirements. This also means that conduit manufactured and labeled for “above ground” applications can be used for “below ground” applications. What kind of conduit should be used in Core Boring applications? Because of the possibility of high pressure caused by concrete, Heavy Wall conduit should be used for 4″ – 6″ diameter conduit. It is very important that the contractor/installer observes proper procedures when pumping the concrete into the core. If excessive pressure is applied, even Heavy Wall conduit may fail. Please contact Champion Fiberglass with questions on any of the above situations. Once you’ve determined the correct conduit to use in your application, use the Champion Fiberglass Conduit Calculator to estimate possible savings when using Champion Fiberglass Conduit vs. other in-market conduit materials. I have questions regarding which Champion Fiberglass outdoor electrical conduit product will perform best in a tough environment (offshore, coastal, high-UV-exposure, etc.). Where can I get answers? For examples of which products have been used in tough environments similar to yours, visit our Case Studies section. You’re also welcome to contact us – we’ll do our best to connect you to the right answer in a timely manner. Which Champion Fiberglass conduit should be used in Encased Burial applications? Encased in concrete (EB quality) applications can utilize Standard Wall product in most cases. Due to its high temperature rating, fiberglass conduit holds up very well for concrete encasement. (This application does not include core boring.) If UL listed material is required, use standard wall for 3/4″ – 4″ diameter, and Medium Wall for 5″ and 6″ (UL designates Champion Fiberglass MW for 5″ and 6″ as SW). To compare possible material and installation costs for Champion Fiberglass conduit vs. other in-market materials, use the Champion Fiberglass Conduit Calculator . Does Champion Fiberglass have an application in my industry? Which Champion Fiberglass conduit should be used in Direct Buried conduit applications? Direct Buried (or DB quality) applications should utilize UL Listed conduit. Use Standard Wall for 3/4″ – 4″ diameter, and Medium Wall for 5″ and 6″ (UL designates Champion Fiberglass MW for 5″ and 6″ as SW). For very deep trenches, special soil conditions or where high rate of compacting can be expected, an even heavier wall should be selected. Please contact Champion Fiberglass with questions on any of the above situations. To compare possible material and installation costs for Champion Fiberglass conduit vs. other in-market materials, use the Champion Fiberglass Conduit Calculator . How can Champion Fiberglass help drive project savings? Champion Fiberglass offers many opportunities to save, from a lower starting material cost to lower manpower and installation costs. Visit our comparison chart to weigh the benefits, or visit our blog to learn more about how our newly extended support spacing distances help build savings. You can also view our updated UL Listed support spacing distances in comparison to PVC-coated steel and GRC, and make a direct material and installation comparison using our Conduit Calculator. If you’d like to discuss actual numbers, please contact us – we’d be happy to review any project spec or details and demonstrate your opportunities to save with Champion Fiberglass. Listing Conduit is listed by Underwriters Laboratories (UL) to the UL 2420 Below Ground standard Environmental Champion Fiberglass has a current Certificate, issued by an independent and accredited company, of compliance with an ISO 14001: Environmental Management Systems and Performance Manufacturing Information to Be Included NEMA TC 14 UL 2420 BG (Below Ground) Manufacturer and Reseller (if the conduit was modified or bent other than by the manufacturer) Date of Manufacturing of conduit and elbows Elbows shall be marked with the angle and radius Special customer markings (per request) All conduit, elbows, and fittings are manufactured in the U.S.A. and marked as such Toxicity Meets listed maximum values when tested in accordance with ASTM E-800 Does not contain any compounds that can release halogens in more than trace amounts when burning Additional Information Champion Fiberglass products for below ground installations Instagram This field is for validation purposes and should be left unchanged. 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