LEVEL 1 RACEWAYS & FITTINGS NCCER MODULE EXAM QUESTIONS WITH VERIFIED CORRECT ANSWERS.docx

What is the purpose of a sealing fitting (seal off) To minimize the passage of gas vapors and flames through a conduit. What is article 344 of NEC Will be covering RMC or Rigid metal conduit What is one characteristic of aluminum conduit? It is more resistant to wet environments. When installing EMT or electrical metallic tubing it must? be supported every 10 feet EMT is often referred as? Thin wall type conduit. A type of conduit body with a 90° connector and the cover on the left is a Type ll To act as a moisture seal, an outer covering of liquidtight, sunlight-resistant flexible material is placed around Liquidtight Flexible Metal Conduit Is type of feeding used to prevent damage to PVC conduit by temperature changes is A expansion coupling The voltage drop of conductors carrying alternating current in PVC Will be less then that of identical conductors in steel conduit because PVC has no metal A type of conduit that has a wall thickness less than that of RMC but thicker than EMT is IMC The maximum allowable spacing between horizontal wire way support? Will be 10 feet NEC Article 386 contains the installation specifications of surface metal raceways Another name for a stand off support is? Minerallac or A mineral extract. The derating factors shall only be applied when the number of current carrying conductors in a wire way exceeds? 30 When a equipment frame is bonded to a metal conduit it Acts as the equipment grounding conductor When making a conduit to box connection that a bonding wire will be installed use a Grounding lock nut When installing conduit in reinforced concrete it is best to use a concrete box with ears 6 inch deep Wire bundles are commonly secured and identified using _____. tie wraps usually made out of nylon A typical metric fastener size is ____. M8 x 1 When installing hammer driven pins and studs in soft concrete block the drive pine or stud should be embedded in the concrete for at least. 1/2 (13mm) in hard concrete 1 1/4 (32mm) in soft concrete block The highest power level for a power actuated device is? 12 A type of anchor that is a good choice when jacking or leveling the fastening component is a stud bolt anchor When using an epoxy anchoring system use an anchor screen in hollow wall or brick and concrete too Table trays are covered article 392 Cable trays mounted in a tunnel are most likely to use Wall mounting A type of fastener with a bugle-shaped head is a ____. drywall screw Conduit that passes from a classified location into an unclassified location requires the use of a Sealing fitting Conduit is best stored _____. pipe racks When transporting long lengths of raceway to the job site? Flag the ends What is Toggle Bolt What is the lightest duty tubing available for enclosing and protecting electrical wiring? Electrical Metal Tubing (EMT) Why does fittings listed for EMT must be used? Because EMT is too thin for threads What is Rigid Metal Conduit (RMC) Conduit that is constructed of metal of sufficient thickness to permit the cutting of pipe threads at each ends What happens to PVC directly relating to temperature? It is subjected to expansion and contraction What is High-density polyethylene conduit (HDPE) a rigid nonmetallic conduit listed for underground installations LFNC is also limited in length to no longer than 6 feet What does the letter L represent elbow What type of conduit body is used to provide a junction point for 3 intersection conduits type T A type LB conduit body has a cover on the back What are the hazards in manufacturing plants and other industrial facilities involved flammable gasses, vapors and ignitable dust What is used to support conduit away from the supporting structure the standoff support often referred to as a minerallac What are special conduit boxes are available in in depths of up to 6 inches How should conduit runs be? they should be plumb since they are exposed and bends should be correct and have a neat and orderly appearance What shall only be applied when the number of current-carrying conductors in a wireway exceeds 30 Derating factors What type of conduit is approved for direct burial? HDPE What conduit bodies are used to provide a pull point on a straight conduit run? Type c What type of conduit should be used where corrosion is a factor? PVC What conduit bodies are used to join four intersecting conduits? Type x What type of conduit is used to connect machines that vibrate during operation? Flexible metal conduit. What is RMC made of? steel or aluminum also require the use of threaded fittings. what is black enamel steel conduit? Rigid black enamel steel conduit AKA black conduit is coated with black enamel and is no longer sold in the USA. what is PVC schedule 40 and 80? PVC schedule 40 DB heavy duty PVC schedule 80 DB extra heavy duty what 2 type is PVC available in? type 1 or EB (thin wall) type 2 or DB (thick wall) when must PVC be supported? with in 3 feet to 8 feet depending on the size of conduit. what temperature is LFNC used in? 80c dry and 60c wet