Flexible Nonmetallic Conduit - PDF

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ToughestSilver

Uploaded by ToughestSilver

TLE_IAEI9-12RCIIIa-j-2

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electrical conduit flexible conduit construction electrical installations

Summary

This document covers various aspects of flexible nonmetallic conduit, including its uses, benefits, and precautions. It details scenarios where this type of conduit is best used, emphasizing its flexibility and mechanical protection for electrical conductors. It also highlights situations where its use is not appropriate. Specific examples are given in the form of questions and answers, focusing on practical application and installation.

Full Transcript

FLEXIBLE NONMETALLIC CONDUIT TLE_IAEI9-12RCIIIa-j-2 SLIDESMANIA.COM FLEXIBLE NONMETALLIC CONDUIT (FNMC) Used as mechanical protection for electric condu...

FLEXIBLE NONMETALLIC CONDUIT TLE_IAEI9-12RCIIIa-j-2 SLIDESMANIA.COM FLEXIBLE NONMETALLIC CONDUIT (FNMC) Used as mechanical protection for electric conductors. It has a smooth interior and a wall of non-conducting fibrous material. This is the commonly used electrical wiring conduit now a days due to its economic value. SLIDESMANIA.COM FLEXIBLE NONMETALLIC CONDUIT (FNMC) Used as mechanical protection for electric conductors. It has a smooth interior and a wall of non-conducting fibrous material. This is the commonly used electrical wiring conduit now a days due to its economic value. SLIDESMANIA.COM Uses; 1) Where flexibility is required for installation, operation, or maintenance. 2) Where protection of the contained conductors is required from vapors, liquids, or solids. 3) For outdoor locations where listed and SLIDESMANIA.COM marked as suitable for the purpose 4) For direct burial where listed and marked for the purpose. 5) Liquid tight flexible nonmetallic conduit as defined in Section 3.51.2.1(2) shall be permitted to be installed in lengths longer than 1 800 mm. 6) As a listed manufactured prewired assembly, 15, mm (20mm) through 25 SLIDESMANIA.COM mm (32 mm) conduit NOT PERMITTED; 1) Where subject to physical damage 2) Where any combination of ambient and conductor temperature is in excess of that for which the liquid tight flexible nonmetallic conduit is approved. 3) In lengths longer than 1 800 mm. SLIDESMANIA.COM 4) Where voltage of the contained conductors is in excess of 600 volts, nominal SLIDESMANIA.COM EVALUATION 03 SLIDESMANIA.COM 1. In a residential building, which situation would most likely require the use of flexible non-metallic conduit? A. Installing wiring in a wet location. B. Running wires behind drywall where flexibility is required. C. Wiring in an industrial setting with high heat. D. Installing underground cables. SLIDESMANIA.COM 2. What is a primary advantage of using flexible non-metallic conduit in electrical installations? A. High resistance to chemical exposure. B. Ability to be easily bent and routed through complex paths. C. Superior fire resistance compared to metal conduits. SLIDESMANIA.COM D. Higher current carrying capacity. 3. In which scenario should flexible non-metallic conduit not be used? A. Indoor installations where flexibility is needed. B. Behind walls in a residential home C. Areas exposed to direct sunlight for long durations. SLIDESMANIA.COM D. Under raised floors in offices 4. What is a common material used to make flexible non-metallic conduit? A. Aluminum B. Galvanized steel C. Polyvinyl chloride (PVC) D. Copper SLIDESMANIA.COM 5. When installing flexible non-metallic conduit, what is a key consideration to ensure safety and compliance with electrical codes? A. Ensuring the conduit is buried at least 2 feet underground. B. Avoiding any bends in the conduit. C. Painting the conduit with a fire- retardant coating. D. Using the correct fittings to secure the SLIDESMANIA.COM conduit and prevent moisture ingress. SLIDESMANIA.COM SLIDESMANIA.COM SLIDESMANIA.COM

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